Encycolorpedia

Federal Standard 30215 / #9e7655 Barwy Hex

#9e7655 Paint ChipSzesnastkowykod kolour #9e7655 jest odcieniem pomarańczowy. W kolorze RGB model #9e7655 składa się z 61.96% czerwonego, 46.27% zielonego i 33.33% niebieskiego. W kolorze HSL przestrzeń #9e7655 ma odcień 27° (stopni), 30% nasycenie i 48% jasność. Kolor ten ma przybliżoną długość fali 584.35 nm.

Odmiany Kolorów

Nazwane Kolory

Schematy Kolorów

Pobieranie: GIMP GPL Adobe ASE (Adobe Swatch Exchange) Sketch Palette

#9e7655 gradient liniowy do kompemetnarnego #448caf

  1. #9e7655
  2. #967a64
  3. #8c7e73
  4. #808182
  5. #728591
  6. #5f88a0
  7. #448caf

Kolory monochromatyczne

  1. #855f3f
  2. #8d6746
  3. #966e4e
  4. #9e7655
  5. #a77e5c
  6. #af8664
  7. #b88e6c

Barwa

  1. #9e7655
  2. #99775b
  3. #937761
  4. #8e7868
  5. #88796e
  6. #817974
  7. #7a7a7a

Odcienie kolorów

#9e7655 do białego

  1. #9e7655
  2. #af8c6f
  3. #c0a28a
  4. #d0b8a6
  5. #e0cfc3
  6. #f0e7e1
  7. #ffffff / #fff

#9e7655 do czarnego

  1. #9e7655
  2. #826247
  3. #674e39
  4. #4d3b2c
  5. #352920
  6. #1e1814
  7. #000000 / #000

Farba

Dopasowywanie farb

Podobne farby

  1. Toyo Ink

    1. ★ CF11050
      #9d7857
      ΔE = 0.971 / LRV ≈ 21.3%
  2. Behr

    1. ★ Ranch Brown S240-6
      #9e7455
      ΔE = 1.077 / LRV ≈ 20.4%
    2. Wave Of Grain S290-7
      #a0764b
      ΔE = 2.905 / LRV ≈ 20.9%
  3. Berger

    1. ★ Wildwood Bay / 8566
      #a07959
      ΔE = 1.148 / LRV ≈ 21.9%
    2. Caramel Mountain / 8534
      #a27d56
      ΔE = 3.161 / LRV ≈ 23.0%
  4. Plascon

    1. ★ Pecan Nut O6-D1-3
      #9c7858
      ΔE = 1.156 / LRV ≈ 21.2%
    2. ★ Earthling O4-D1-3
      #a07458
      ΔE = 2.161 / LRV ≈ 20.7%
  5. Dutch Boy

    1. ★ Big Horn
      #a17854
      ΔE = 1.199 / LRV ≈ 21.7%
    2. Baseball Mitt
      #a67a5b
      ΔE = 2.422 / LRV ≈ 22.8%
  6. Pratt & Lambert

    1. ★ Basic Brown 10-18
      #a17854
      ΔE = 1.199 / LRV ≈ 21.7%
    2. Matté 7-21
      #97775d
      ΔE = 2.659 / LRV ≈ 20.6%
  7. Devoe Paint

    1. ★ Afternoon Tea / 80YR 21/226
      #9d7659
      ΔE = 1.216 / LRV ≈ 20.8%
    2. ★ Copper Penny / 90YR 23/274
      #a57a55
      ΔE = 2.173 / LRV ≈ 22.6%
  8. Evonik-Degussa

    1. ★ 4053D Oak Parquet
      #9f7550
      ΔE = 1.246 / LRV ≈ 20.7%
    2. 4063D Country Maple
      #9b6f50
      ΔE = 2.679 / LRV ≈ 18.9%
  9. Nippon Paint

    1. ★ Country Maple / NP N 1877 D
      #9a7352
      ΔE = 1.295 / LRV ≈ 19.7%
    2. ★ Oak Parquet / NP N 1870 D
      #a07a55
      ΔE = 1.937 / LRV ≈ 22.0%
  10. Caparol

    1. ★ 10/18
      #a07450
      ΔE = 1.339 / LRV ≈ 20.5%
    2. 1401
      #a07c54
      ΔE = 3.175 / LRV ≈ 22.5%
  11. KILZ

    1. ★ Maple Fudge / D552
      #a17759
      ΔE = 1.374 / LRV ≈ 21.5%
    2. Gingerbread / D511
      #9c7c5c
      ΔE = 2.709 / LRV ≈ 22.3%
  12. Taubmans

    1. ★ Saddle Stitch / T12 20.G11
      #9f785b
      ΔE = 1.440 / LRV ≈ 21.6%
    2. Woodwork Tan / T113-8
      #9a7a59
      ΔE = 2.400 / LRV ≈ 21.5%
  13. CIL

    1. ★ Copper Penny
      #a27a58
      ΔE = 1.557 / LRV ≈ 22.3%
    2. Bitter Creek
      #a0764b
      ΔE = 2.905 / LRV ≈ 20.9%
  14. Chrysler

    1. ★ Roanoke Beige
      #a17a5b
      ΔE = 1.621 / LRV ≈ 22.3%
    2. ★ Buckskin Tan
      #a37650
      ΔE = 1.837 / LRV ≈ 21.3%
  15. Focoltone

    1. ★ 2189
      #a0734f
      ΔE = 1.647 / LRV ≈ 20.3%
  16. General Paint

    1. ★ Maple Pie / CL 2716A
      #9f765a
      ΔE = 1.693 / LRV ≈ 21.1%
    2. Tia Maria / CL 2676A
      #8e745e
      ΔE = 4.775 / LRV ≈ 19.1%
  17. PPG Pittsburgh Paints

    1. ★ Cinnamon Twist / PPG1081-6
      #9f7250
      ΔE = 1.725 / LRV ≈ 20.0%
    2. Weathered Wicker / PPG1092-7
      #97774d
      ΔE = 3.975 / LRV ≈ 20.3%
  18. Earthpaint

    1. ★ 4-8-6 Desert Breeze
      #9f7251
      ΔE = 1.740 / LRV ≈ 20.0%
    2. 4-10-6 Topaz
      #a17b51
      ΔE = 3.263 / LRV ≈ 22.3%
  19. Sikkens

    1. ★ E0.25.45
      #9f7355
      ΔE = 1.764 / LRV ≈ 20.3%
    2. F2.25.45
      #8f7550
      ΔE = 4.887 / LRV ≈ 19.1%
  20. AMC

    1. ★ Carmel Tan
      #a27953
      ΔE = 1.866 / LRV ≈ 22.0%
    2. Coffee
      #9a8161
      ΔE = 5.116 / LRV ≈ 23.4%
  21. Games Workshop - Citadel

    1. ★ Balthasar Gold (Metal)
      #a47552
      ΔE = 1.887 / LRV ≈ 21.2%
    2. Sylvaneth Bark
      #ac8262
      ΔE = 4.889 / LRV ≈ 25.6%
  22. Sherwin-Williams

    1. ★ Smokey Topaz - 6117
      #a57955
      ΔE = 1.937 / LRV ≈ 22.3%
    2. Renwick Golden Oak - 2824
      #96724c
      ΔE = 2.946 / LRV ≈ 19.0%
  23. Colortrend

    1. ★ 0165
      #9a775c
      ΔE = 2.011 / LRV ≈ 20.8%
    2. 0291
      #917956
      ΔE = 4.869 / LRV ≈ 20.4%
  24. Nerolac

    1. ★ Caravan - 2756
      #9e764e
      ΔE = 2.115 / LRV ≈ 20.8%
    2. Wolfin - 2790
      #a9795a
      ΔE = 3.114 / LRV ≈ 22.8%
  25. Dunn-Edwards

    1. ★ Summerville Brown / 818
      #997651
      ΔE = 2.167 / LRV ≈ 20.3%
    2. Lonely Road / 767
      #947754
      ΔE = 3.447 / LRV ≈ 20.1%
  26. Bristol

    1. ★ Corduroy / P192-N6
      #977758
      ΔE = 2.196 / LRV ≈ 20.5%
    2. Fox Terrier / P188-N6
      #916d50
      ΔE = 4.081 / LRV ≈ 17.5%
  27. Cloverdale Paint

    1. ★ Carmel Candy / 8533
      #967254
      ΔE = 2.255 / LRV ≈ 19.2%
    2. Caramel Mountain / 8534
      #a57f5e
      ΔE = 3.335 / LRV ≈ 24.0%
  28. Clark+Kensington

    1. ★ Allspice / N-W23
      #967254
      ΔE = 2.255 / LRV ≈ 19.2%
    2. Riviera Maya / N-W14
      #a56e4b
      ΔE = 4.300 / LRV ≈ 19.7%
  29. Sico

    1. ★ 6192-63 Elm Bough
      #97775a
      ΔE = 2.260 / LRV ≈ 20.5%
    2. 6068-63 Leather Goods
      #a87351
      ΔE = 3.456 / LRV ≈ 21.2%
  30. Ford

    1. ★ Medium Sonora
      #a17c5d
      ΔE = 2.268 / LRV ≈ 22.8%
    2. Tan
      #a4794f
      ΔE = 2.908 / LRV ≈ 22.1%
  31. Kelly-Moore

    1. ★ Fallen Leaf / KM4032-5
      #9b704d
      ΔE = 2.280 / LRV ≈ 19.1%
    2. Wildwood Bay / KM4039-3
      #a68062
      ΔE = 3.861 / LRV ≈ 24.4%
  32. Levis

    1. Herontdekte Roest
      #9c7851
      ΔE = 2.378 / LRV ≈ 21.1%
    2. Atl Ombre B4
      #aa7e54
      ΔE = 4.211 / LRV ≈ 24.1%
  33. Wattyl

    1. Cuddly Bear / B83W
      #9a7359
      ΔE = 2.441 / LRV ≈ 19.9%
    2. Walnut Whip / B61W
      #a18057
      ΔE = 4.609 / LRV ≈ 23.7%
  34. New Look

    1. Clever Cookie / D19-05
      #9a7359
      ΔE = 2.441 / LRV ≈ 19.9%
    2. Millford / C17-05
      #967b64
      ΔE = 4.137 / LRV ≈ 21.6%
  35. Duron

    1. Steady Brown
      #99734c
      ΔE = 2.520 / LRV ≈ 19.6%
    2. Smokey Topaz
      #ad7a4d
      ΔE = 4.768 / LRV ≈ 23.3%
  36. Valspar Paint

    1. Italian Roast
      #9d714a
      ΔE = 2.547 / LRV ≈ 19.5%
    2. Roadhouse Tavern
      #9b7d66
      ΔE = 4.062 / LRV ≈ 22.6%
  37. Coronado Paint

    1. 8526 - Mexican Hills
      #9f7c58
      ΔE = 2.584 / LRV ≈ 22.5%
    2. 8574 - Burnished Caramel
      #936d53
      ΔE = 4.153 / LRV ≈ 17.8%
  38. ICI Paints

    1. Creme Brulee 00YY 26/220
      #a07d5e
      ΔE = 2.657 / LRV ≈ 23.0%
    2. Bentwood 20YY 23/246
      #957650
      ΔE = 3.450 / LRV ≈ 19.9%
  39. Pantone / PMS

    1. 7525
      #9e7052
      ΔE = 2.670 / LRV ≈ 19.5%
    2. Metallic 873
      #937851
      ΔE = 4.615 / LRV ≈ 20.2%
  40. Diamond Vogel

    1. Dodge Pole / 0157
      #a6795c
      ΔE = 2.713 / LRV ≈ 22.6%
    2. Sahara Wind / 0269
      #90714a
      ΔE = 4.587 / LRV ≈ 18.2%
  41. Brighto Paints

    1. 4-9-6 Fresh Biscuit
      #a27b52
      ΔE = 2.985 / LRV ≈ 22.5%
    2. 4-7-6 Indian Sunset
      #9d6e56
      ΔE = 4.430 / LRV ≈ 19.0%
  42. British Standard

    1. BS 4800 04 B 23 - Brown
      #95735a
      ΔE = 3.051 / LRV ≈ 19.4%
    2. BS 4800 06 C 37 - Leather brown / Brownstone
      #a57255
      ΔE = 3.497 / LRV ≈ 20.7%
  43. Sto

    1. 32142
      #997249
      ΔE = 3.087 / LRV ≈ 19.3%
    2. 32331
      #9c7a66
      ΔE = 4.270 / LRV ≈ 21.9%
  44. Crown Diamond

    1. 7378-63 Allongé
      #aa7b59
      ΔE = 3.184 / LRV ≈ 23.4%
    2. 7381-63 Chi
      #9c7f60
      ΔE = 3.903 / LRV ≈ 23.1%
  45. Opaltone / OMS

    1. 4169
      #9c6e48
      ΔE = 3.306 / LRV ≈ 18.7%
    2. 4168
      #a0745e
      ΔE = 4.015 / LRV ≈ 20.8%
  46. Peintures MF

    1. Nicolette
      #947755
      ΔE = 3.320 / LRV ≈ 20.1%
    2. AD119-5
      #9a6c48
      ΔE = 3.785 / LRV ≈ 18.1%
  47. Jotun

    1. 1223 / Høststemning
      #a8764d
      ΔE = 3.330 / LRV ≈ 21.8%
    2. 2771 / Rustikk Terracotta
      #9f7d6a
      ΔE = 5.036 / LRV ≈ 23.1%
  48. Dulux Australia

    1. Brownstone / O30
      #94775e
      ΔE = 3.393 / LRV ≈ 20.3%
    2. Ground Coriander / I48
      #aa7d58
      ΔE = 3.480 / LRV ≈ 23.9%
  49. Tollens

    1. T2159-2
      #926f4d
      ΔE = 3.583 / LRV ≈ 18.0%
    2. T2111-6
      #a67e64
      ΔE = 3.951 / LRV ≈ 24.0%
  50. Nature Paint

    1. Muntjac
      #93725a
      ΔE = 3.601 / LRV ≈ 19.0%
  51. Krylon

    1. Khaki
      #aa7e5a
      ΔE = 3.623 / LRV ≈ 24.2%
  52. Resene

    1. Sorrell Brown BR63-044-067
      #9d7f61
      ΔE = 3.759 / LRV ≈ 23.2%
    2. Double Rickshaw BR63-038-063
      #9d7f65
      ΔE = 4.036 / LRV ≈ 23.3%
  53. 1829

    1. Old Gold
      #997d62
      ΔE = 3.761 / LRV ≈ 22.3%
  54. Asian Paints

    1. Royal Crown / 8525
      #917350
      ΔE = 3.777 / LRV ≈ 18.9%
    2. Honeycomb / 8533
      #916f4d
      ΔE = 3.798 / LRV ≈ 17.9%
  55. Natural Color System / NCS

    1. S 4020-Y20R
      #a77a4d
      ΔE = 3.931 / LRV ≈ 22.7%
    2. S 4010-Y30R
      #a38267
      ΔE = 4.702 / LRV ≈ 24.7%
  56. Mylands of London

    1. Rich Gold
      #ac7c54
      ΔE = 3.964 / LRV ≈ 23.8%
  57. Tikkurila

    1. 4847
      #a67359
      ΔE = 4.100 / LRV ≈ 21.1%
    2. 508X
      #a26d46
      ΔE = 4.335 / LRV ≈ 19.1%
  58. Vallejo

    1. Vallejo 70.804 #36
      #aa8060
      ΔE = 4.133 / LRV ≈ 24.8%
  59. Scania

    1. Beige / 1406068
      #957c5f
      ΔE = 4.224 / LRV ≈ 21.6%
  60. Jedynka

    1. Csokipuding
      #9f8066
      ΔE = 4.240 / LRV ≈ 23.8%
  61. TRUMATCH

    1. 50-d2
      #a47862
      ΔE = 4.259 / LRV ≈ 22.2%
    2. 50-d3
      #9c725e
      ΔE = 4.583 / LRV ≈ 19.9%
  62. Porter Paints

    1. Hat Box Brown / 417-6
      #90775d
      ΔE = 4.265 / LRV ≈ 19.9%
    2. Glazed Pecan / 421-6
      #91694a
      ΔE = 5.084 / LRV ≈ 16.6%
  63. Dulux

    1. 90YR 25/323
      #ae7d57
      ΔE = 4.304 / LRV ≈ 24.4%
    2. 80YR 19/177
      #90725e
      ΔE = 4.838 / LRV ≈ 18.8%
  64. Rodda Paint

    1. English Bartlett H28
      #a37646
      ΔE = 4.322 / LRV ≈ 21.2%
    2. Palomino H128
      #937a62
      ΔE = 4.330 / LRV ≈ 21.0%
  65. Scib Paints

    1. Royal Crown / 8525
      #91714a
      ΔE = 4.334 / LRV ≈ 18.3%
    2. Caramel Valley / 8583
      #a88266
      ΔE = 4.803 / LRV ≈ 25.3%
  66. Vista Paint

    1. Royal Crown
      #91714a
      ΔE = 4.334 / LRV ≈ 18.3%
    2. Suntan
      #a2825c
      ΔE = 4.845 / LRV ≈ 24.4%
  67. California Paints

    1. DE 5265 - Brown Eyes
      #9e6b4a
      ΔE = 4.373 / LRV ≈ 18.3%
    2. DE 6104 - Chic Brick
      #a4725a
      ΔE = 4.412 / LRV ≈ 20.7%
  68. Federal Standard

    1. Federal Standard 10219
      #9a7e67
      ΔE = 4.426 / LRV ≈ 22.8%
    2. Federal Standard 10115
      #a66e44
      ΔE = 4.971 / LRV ≈ 19.7%
  69. Teknos

    1. GBI126
      #9e7b67
      ΔE = 4.431 / LRV ≈ 22.4%
    2. GBI127
      #a88462
      ΔE = 5.147 / LRV ≈ 25.7%
  70. Olympic

    1. Hat Box Brown D21-5
      #8e735b
      ΔE = 4.493 / LRV ≈ 18.8%
    2. Bronco Brown C18-5
      #ac8260
      ΔE = 4.824 / LRV ≈ 25.6%
  71. Flügger

    1. Halm (U-805)
      #9d7d52
      ΔE = 4.514 / LRV ≈ 22.4%
  72. GM / General Motors

    1. Beige
      #946e44
      ΔE = 4.544 / LRV ≈ 17.9%
    2. Almond
      #8c7556
      ΔE = 5.181 / LRV ≈ 19.0%
  73. Crayola

    1. Golden Beige
      #a7825d
      ΔE = 4.562 / LRV ≈ 25.0%
    2. Tawny
      #997c52
      ΔE = 4.760 / LRV ≈ 21.8%
  74. Volkswagen

    1. Maya Gold
      #a37746
      ΔE = 4.582 / LRV ≈ 21.4%
    2. Sand
      #a9835f
      ΔE = 4.900 / LRV ≈ 25.5%
  75. Caran d'Ache

    1. 039 Olive Brown
      #8e6e4c
      ΔE = 4.594 / LRV ≈ 17.4%
  76. Kansai Paint

    1. Terracotta
      #ab7458
      ΔE = 4.682 / LRV ≈ 21.9%
  77. Glidden

    1. Cocoa Delight / PPG1078-6
      #8d725a
      ΔE = 4.702 / LRV ≈ 18.4%
    2. Chocolate Moment / PPG1077-5
      #998069
      ΔE = 5.164 / LRV ≈ 23.2%
  78. Martha Stewart Living

    1. Timber F15
      #8f785d
      ΔE = 4.726 / LRV ≈ 20.1%
  79. Laura Ashley

    1. 46-15 Gravevine
      #8d735c
      ΔE = 4.824 / LRV ≈ 18.7%
    2. 612 Taupe 6
      #8b7359
      ΔE = 5.122 / LRV ≈ 18.5%
  80. Sigma

    1. Orange Terra / S 4040-Y50R
      #a46c49
      ΔE = 4.832 / LRV ≈ 19.1%
    2. Orange Terra / S 4030-Y30R
      #ac8259
      ΔE = 5.181 / LRV ≈ 25.5%
  81. RVI

    1. Beige / 02136
      #ab7b4c
      ΔE = 4.867 / LRV ≈ 23.3%
  82. Albany Paint

    1. Briars Wood
      #a76f53
      ΔE = 4.949 / LRV ≈ 20.2%
  83. Brillux

    1. 12.09.21
      #8c6f56
      ΔE = 4.954 / LRV ≈ 17.6%
    2. 18.09.21
      #967260
      ΔE = 5.036 / LRV ≈ 19.4%
  84. Testors

    1. Testors 1167
      #b07d5e
      ΔE = 4.955 / LRV ≈ 24.7%
    2. Testors 1241
      #b0764f
      ΔE = 5.083 / LRV ≈ 22.8%
  85. Ralph Lauren

    1. Pioneer / RLNA209
      #8d715c
      ΔE = 5.132 / LRV ≈ 18.2%
  86. Disney

    1. 1C-50-3 Muddlement
      #b17950
      ΔE = 5.162 / LRV ≈ 23.6%
  87. Humbrol

    1. 119 Light Earth
      #a57662
      ΔE = 5.188 / LRV ≈ 21.8%
  88. Benjamin Moore

    1. Toasted Pecan / 1209
      #a36f58
      ΔE = 5.211 / LRV ≈ 19.9%
    2. Fox Run / 1229
      #a87a65
      ΔE = 5.216 / LRV ≈ 23.2%
  89. Skoda

    1. Coffee White / 9005
      #8d704a
      ΔE = 5.217 / LRV ≈ 17.7%

Symulacja Daltonizmu

Monochromacy

Dichromacy

Trichromacy

#9e7655 HTML & CSS Przykłady

#9e7655 pierwszoplanowy

Sukces ma wieju ojców, porażka jest sierotą.

<p style="color: #9e7655">…</p>

#9e7655 tło

Panu Bogu świeczkę, a diabłu ogarek.

<p style="background-color: #9e7655">…</p>

#9e7655 cień tekstu

Co ciało lubi, to duszę zgubi.

<p style="text-shadow: 0.1em 0.1em 0.15em #9e7655">…</p>

Wykresy Kompozycji

Przestrzenie kolorów

Dziesiątkowy
10384981
Dwójkowy
10011110, 01110110, 01010101
Hexadecimal
#9e7655
LRV
≈ 20.9%
Najbliższy krótki kolor szesnastkowy
#975 ΔE = 1.847
RGB
rgb(158, 118, 85)
RGBA
rgba(158, 118, 85, 1.0)
rg chromatyczności
r: 0.438, g: 0.327, b: 0.235
RYB
czerwony: 61.961%, żółty: 56.951%, niebieski: 33.333%
Android / android.graphics.Color
-6392235 / 0xff9e7655
HSL
hsl(27, 30%, 48%)
HSLA
hsla(27, 30%, 48%, 1.0)
HSV / HSB
barwa: 27° (27.123), nasycenie: 46% (0.462), wartość: 62% (0.620)
HSP
barwa: 27.123, nasycenie: 46.203%, postrzegana jasność: 50.314%
HSLuv (HUSL)
H: 43.183, S: 52.786, L: 52.821
Cubehelix
H: 22.665, S: 0.414, L: 0.496
TSL
T: 3.315, S: 0.140, L: 0.495
CMYK
cyjan: 0% (0.000), magenta: 25% (0.253), żółty: 46% (0.462), czarna: 38% (0.380)
CMY
cyjan: 38% (0.380), magenta: 54% (0.537), żółty: 67% (0.667)
XYZ
X: 22.220, Y: 20.883, Z: 11.453
xyY
x: 0.407, y: 0.383, Y: 20.883
CIELab
L: 52.821, a: 11.369, b: 24.248
CIELuv
L: 52.821, u: 29.173, v: 27.379
CIELCH / LCHab
L: 52.821, C: 26.781, H: 64.880
CIELUV / LCHuv
L: 52.821, C: 40.008, H: 43.183
Hunter-Lab
L: 45.698, a: 6.819, b: 17.129
CIECAM02
J: 43.322, C: 24.254, h: 58.971, Q: 129.677, M: 21.210, s: 40.443, H: 52.268
OSA-UCS
lekkość: -9.956, żółty: 3.522, zielony: -1.912
LMS
L: 23.394, M: 19.885, S: 11.614
YCbCr
Y: 124.408, Cb: 107.593, Cr: 147.903
YCoCg
Y: 119.750, Cg: -1.750, Co: 57.750
YDbDr
Y: 126.198, Db: -61.989, Dr: -60.481
YPbPr
Y: 124.144, Pb: -21.100, Pr: 21.518
xvYCC
Y: 122.618, Cb: 109.465, Cr: 146.902
YIQ
Y: 126.198, I: 34.430, Q: -1.809
YUV
Y: 126.198, U: -20.272, V: 27.900
System Koloru Munsell
7.5YR 5/4 ΔE = 2.449
Kolor marki
Disqus (orange) ΔE = 12.059

Przypadkowe Kolory

Czerwony

Zielony

Niebieski