Encycolorpedia

Duron Antiquity / #c2ad5a Barwy Hex

#c2ad5a Paint ChipSzesnastkowykod kolour #c2ad5a jest odcieniem żółty. W kolorze RGB model #c2ad5a składa się z 76.08% czerwonego, 67.84% zielonego i 35.29% niebieskiego. W kolorze HSL przestrzeń #c2ad5a ma odcień 48° (stopni), 46% nasycenie i 56% jasność. Kolor ten ma przybliżoną długość fali 574.8 nm.

Odmiany Kolorów

Nazwane Kolory

Schematy Kolorów

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

#c2ad5a gradient liniowy do kompemetnarnego #1d7dff

  1. #c2ad5a
  2. #b9a478
  3. #ad9b94
  4. #9d93af
  5. #878bca
  6. #6784e4
  7. #1d7dff

Kolory monochromatyczne

  1. #9f8c3b
  2. #ab9745
  3. #b6a250
  4. #c2ad5a
  5. #ceb865
  6. #dac46f
  7. #e6cf7a

Barwa

  1. #c2ad5a
  2. #baa864
  3. #b2a26d
  4. #aa9d76
  5. #a1987e
  6. #989386
  7. #8e8e8e

Odcienie kolorów

#c2ad5a do białego

  1. #c2ad5a
  2. #ceba75
  3. #d9c790
  4. #e3d5ab
  5. #ede3c7
  6. #f6f1e3
  7. #ffffff / #fff

#c2ad5a do czarnego

  1. #c2ad5a
  2. #9f8e4b
  3. #7d703d
  4. #5d532f
  5. #3f3822
  6. #221f15
  7. #000000 / #000

Farba

Dopasowywanie farb

Podobne farby

  1. Wattyl

    1. ★ Oracle Bone / B24W
      #c4ad5d
      ΔE = 0.771 / LRV ≈ 42.4%
  2. New Look

    1. ★ Samba Whistle / A02-08
      #c4ad5d
      ΔE = 0.771 / LRV ≈ 42.4%
  3. Valspar Paint

    1. ★ Mark Twain House Gold
      #c4ac5c
      ΔE = 0.961 / LRV ≈ 42.0%
    2. ★ Caramel Gold
      #bda859
      ΔE = 1.896 / LRV ≈ 39.5%
  4. Little Greene

    1. ★ Chiffon
      #c4af60
      ΔE = 1.031 / LRV ≈ 43.2%
    2. Light Buff
      #cea95b
      ΔE = 4.346 / LRV ≈ 42.3%
  5. Dunn-Edwards

    1. ★ Mack Creek / 1307
      #bfae5b
      ΔE = 1.052 / LRV ≈ 42.1%
    2. Moss Stone / 1143
      #b4a54b
      ΔE = 4.030 / LRV ≈ 37.1%
  6. Nippon Paint

    1. ★ Woven Slats / NP BGG 1695 D
      #c4ab57
      ΔE = 1.136 / LRV ≈ 41.6%
    2. ★ Winter Moss / NP BGG 1723 D
      #bbaa5a
      ΔE = 1.786 / LRV ≈ 40.1%
  7. California Paints

    1. ★ DE 5487 - Spring Marsh
      #c0b05d
      ΔE = 1.490 / LRV ≈ 43.0%
    2. DE 5432 - Haystacks
      #cfac47
      ΔE = 4.476 / LRV ≈ 43.2%
  8. RAL

    1. ★ RAL 095 70 40
      #bdaa5d
      ΔE = 1.597 / LRV ≈ 40.4%
    2. RAL 100 70 50
      #b6ac4b
      ΔE = 3.894 / LRV ≈ 40.0%
  9. Sico

    1. ★ 6101-64 Prickly Pear
      #c6ab55
      ΔE = 1.640 / LRV ≈ 41.8%
    2. 6142-53 Mongolian Sands
      #bead70
      ΔE = 3.767 / LRV ≈ 42.0%
  10. Crown Diamond

    1. ★ 7272-64 Prickly Pear
      #c6ab55
      ΔE = 1.640 / LRV ≈ 41.8%
    2. 7266-53 Small Green Peas
      #bea567
      ΔE = 4.460 / LRV ≈ 38.8%
  11. Taubmans

    1. ★ Lime Khaki / T08 37-4
      #c2a953
      ΔE = 1.644 / LRV ≈ 40.5%
    2. Down Yonder / T10-6
      #cbb46b
      ΔE = 3.393 / LRV ≈ 46.4%
  12. Cloverdale Paint

    1. ★ Garden Element / 7838
      #c2ab61
      ΔE = 1.676 / LRV ≈ 41.5%
    2. Terra Verde / 7822
      #c4b55e
      ΔE = 2.947 / LRV ≈ 45.6%
  13. ICI Paints

    1. ★ Limey 60YY 45/382
      #beab61
      ΔE = 1.715 / LRV ≈ 40.9%
    2. 3646 Shakespeare 70YY 50/383
      #c1b56a
      ΔE = 3.545 / LRV ≈ 45.4%
  14. Brillux

    1. ★ 96.12.15
      #c1ae65
      ΔE = 1.740 / LRV ≈ 42.6%
    2. 96.15.15
      #c4ac47
      ΔE = 2.891 / LRV ≈ 41.7%
  15. Pratt & Lambert

    1. ★ Muted Lime 16-27
      #c2b163
      ΔE = 1.786 / LRV ≈ 43.8%
    2. Seaweed 15-23
      #bea56b
      ΔE = 5.044 / LRV ≈ 38.9%
  16. Berger

    1. ★ Gorden Element / 7838
      #bbac59
      ΔE = 1.789 / LRV ≈ 40.8%
    2. Sweet Celery / 7807
      #b0ac62
      ΔE = 4.954 / LRV ≈ 39.6%
  17. Vista Paint

    1. ★ Garden Element
      #bbac59
      ΔE = 1.789 / LRV ≈ 40.8%
    2. Slip into Sunset
      #cdae4e
      ΔE = 3.360 / LRV ≈ 43.8%
  18. Duron

    1. ★ Edgy Gold
      #bdab61
      ΔE = 1.835 / LRV ≈ 40.8%
    2. Different Gold
      #d3ad5c
      ΔE = 4.683 / LRV ≈ 44.5%
  19. Devoe Paint

    1. ★ Limey / 60YY 45/382
      #c6b164
      ΔE = 1.848 / LRV ≈ 44.4%
    2. Golden Crown / 50YY 42/490
      #c7aa4b
      ΔE = 2.807 / LRV ≈ 41.4%
  20. Diamond Vogel

    1. ★ Rain Slicker / 0801
      #bdad51
      ΔE = 2.033 / LRV ≈ 41.3%
    2. Lemon Slice / 0870
      #c4a867
      ΔE = 3.868 / LRV ≈ 40.7%
  21. Kelly-Moore

    1. ★ Garden Element / KM3447-3
      #bdad64
      ΔE = 2.063 / LRV ≈ 41.6%
    2. Sunshine Yellow / KM3494-3
      #c7ab6d
      ΔE = 4.231 / LRV ≈ 42.4%
  22. Colorhouse

    1. ★ Beeswax .05
      #c9b156
      ΔE = 2.158 / LRV ≈ 44.5%
    2. Beeswax .03
      #ceaa5b
      ΔE = 4.041 / LRV ≈ 42.6%
  23. Glidden

    1. ★ Split Pea Soup / PPG1109-5
      #c8b165
      ΔE = 2.174 / LRV ≈ 44.7%
    2. Homemade Butterscotch
      #c4a34e
      ΔE = 4.167 / LRV ≈ 38.5%
  24. PPG Pittsburgh Paints

    1. ★ Split Pea Soup / PPG1109-5
      #c8b165
      ΔE = 2.174 / LRV ≈ 44.7%
    2. Parachute / PPG1218-5
      #beb755
      ΔE = 4.933 / LRV ≈ 45.5%
  25. Nerolac

    1. ★ Gold Dust - 2699
      #cab161
      ΔE = 2.184 / LRV ≈ 44.9%
    2. Limebright - 2671
      #c0b758
      ΔE = 4.467 / LRV ≈ 45.8%
  26. Asian Paints

    1. ★ Green Beret / 7838
      #baab5f
      ΔE = 2.203 / LRV ≈ 40.4%
    2. Spring Beauty / 7822
      #beb760
      ΔE = 4.486 / LRV ≈ 45.7%
  27. Toyo Ink

    1. ★ CF10198
      #c3ad4c
      ΔE = 2.203 / LRV ≈ 42.0%
  28. Bristol

    1. ★ Sweet Grass / P163-C5
      #c0af68
      ΔE = 2.271 / LRV ≈ 42.9%
    2. Elm / P159-C5
      #b8b157
      ΔE = 3.846 / LRV ≈ 42.3%
  29. Plascon

    1. Egoli Y3-C1-3
      #c0b068
      ΔE = 2.350 / LRV ≈ 43.3%
    2. Colonial Yellow Y4-C1-2
      #bcb04c
      ΔE = 3.555 / LRV ≈ 42.3%
  30. GM / General Motors

    1. Beige
      #c2b362
      ΔE = 2.372 / LRV ≈ 44.6%
    2. Sublime Green
      #bdab47
      ΔE = 3.013 / LRV ≈ 40.4%
  31. Dulux

    1. 60YY 45/382
      #c4b169
      ΔE = 2.382 / LRV ≈ 44.2%
    2. 70YY 37/366
      #b0a460
      ΔE = 5.072 / LRV ≈ 36.6%
  32. Behr

    1. Leapfrog 380D-6
      #c9ab53
      ΔE = 2.431 / LRV ≈ 42.2%
    2. Coriander Seed 370F-5
      #bfaa70
      ΔE = 4.313 / LRV ≈ 41.0%
  33. Pascol

    1. Helga's Garden PP070
      #c5b45c
      ΔE = 2.555 / LRV ≈ 45.3%
    2. Helga's Garden PP070
      #c4b45d
      ΔE = 2.576 / LRV ≈ 45.2%
  34. Alcro

    1. Weaver yellow
      #bba653
      ΔE = 2.580 / LRV ≈ 38.5%
    2. Oliv
      #bfad77
      ΔE = 4.940 / LRV ≈ 42.3%
  35. Colortrend

    1. 0808
      #ccae54
      ΔE = 2.715 / LRV ≈ 43.8%
    2. 0870
      #c4a867
      ΔE = 3.868 / LRV ≈ 40.7%
  36. Tollens

    1. T2053-4
      #bbb059
      ΔE = 2.725 / LRV ≈ 42.3%
    2. T2058-5
      #c4a149
      ΔE = 4.989 / LRV ≈ 37.7%
  37. Graham & Brown

    1. Rising Sap
      #bfa64c
      ΔE = 2.787 / LRV ≈ 38.9%
  38. Marston & Langinger

    1. Ochre
      #b7a757
      ΔE = 2.915 / LRV ≈ 38.4%
    2. Bayswater
      #ccad4e
      ΔE = 3.187 / LRV ≈ 43.3%
  39. British Standard

    1. BS 2660 BS 4-056 - Mustard
      #c3a658
      ΔE = 2.975 / LRV ≈ 39.6%
    2. BS 4800 10 C 35 - Wheat / Golden bronze / Savannah
      #c0a966
      ΔE = 2.977 / LRV ≈ 40.5%
  40. Focoltone

    1. 2182
      #bcb051
      ΔE = 3.048 / LRV ≈ 42.3%
    2. 2196
      #bdaf47
      ΔE = 3.723 / LRV ≈ 41.9%
  41. Albany Paint

    1. Cactus Flower
      #bbb053
      ΔE = 3.081 / LRV ≈ 42.2%
  42. Brighto Paints

    1. 3-16-6 Fancy Free
      #b6ac57
      ΔE = 3.180 / LRV ≈ 40.1%
    2. 4-13-5 Muffin
      #c5b177
      ΔE = 4.609 / LRV ≈ 44.6%
  43. Evonik-Degussa

    1. 3043D Woven Slats
      #c7a751
      ΔE = 3.188 / LRV ≈ 40.4%
    2. 3053D Winter Moss
      #b9a454
      ΔE = 3.312 / LRV ≈ 37.5%
  44. Opaltone / OMS

    1. 4107
      #c1a865
      ΔE = 3.242 / LRV ≈ 40.3%
    2. 4577
      #c0a53a
      ΔE = 4.757 / LRV ≈ 38.4%
  45. Dutch Boy

    1. Rhubarb Shoot
      #c4b56a
      ΔE = 3.267 / LRV ≈ 45.8%
  46. General Paint

    1. Pod / CL 1905D
      #ccb26a
      ΔE = 3.370 / LRV ≈ 45.7%
    2. Valognes / CL 1914D
      #c9b278
      ΔE = 4.995 / LRV ≈ 45.6%
  47. Levis

    1. Full Mustard
      #ccaa52
      ΔE = 3.423 / LRV ≈ 42.2%
    2. Grasspriet
      #c9b96d
      ΔE = 4.442 / LRV ≈ 48.2%
  48. Earthpaint

    1. 3-15-5 Batten
      #ceb563
      ΔE = 3.430 / LRV ≈ 47.1%
    2. 3-14-6 Bake Gold
      #bca052
      ΔE = 4.654 / LRV ≈ 36.4%
  49. Dulux Australia

    1. Warm Wollen / A209
      #d0b15a
      ΔE = 3.434 / LRV ≈ 45.6%
    2. Yellow Mosaic / D25
      #ccb778
      ΔE = 5.237 / LRV ≈ 48.1%
  50. Scib Paints

    1. Sunshine Yellow / 7887
      #c5a863
      ΔE = 3.462 / LRV ≈ 40.8%
    2. Sweet Celery / 7807
      #b0ac62
      ΔE = 4.954 / LRV ≈ 39.6%
  51. Color Profi System Uni

    1. 1*01*04.00 / 1*01*04.00
      #bfa44a
      ΔE = 3.480 / LRV ≈ 38.1%
    2. 1*01*03.00 / 1*01*03.00
      #d3b654
      ΔE = 4.808 / LRV ≈ 47.9%
  52. Sigma

    1. Yellow Ocre / 3334 B
      #c2a660
      ΔE = 3.498 / LRV ≈ 39.6%
    2. Yellow Ocre / S 3030-G90Y
      #baa96a
      ΔE = 3.736 / LRV ≈ 39.9%
  53. Crown Paint

    1. Mean Mustard
      #cfad5a
      ΔE = 3.547 / LRV ≈ 43.9%
    2. Intense Olive
      #c8b968
      ΔE = 4.253 / LRV ≈ 48.0%
  54. Australian Standard AS2700

    1. Y62 Sugar Cane
      #bca45c
      ΔE = 3.558 / LRV ≈ 38.0%
    2. Y52 Chamois
      #bea872
      ΔE = 5.182 / LRV ≈ 40.2%
  55. Dupont

    1. CAS259
      #c7a944
      ΔE = 3.681 / LRV ≈ 40.9%
    2. CAS275
      #b7af46
      ΔE = 4.793 / LRV ≈ 41.2%
  56. Ford

    1. Pebble Tan
      #cfb566
      ΔE = 3.709 / LRV ≈ 47.3%
    2. Bright Yellow Gold Diamond Fire
      #b9a359
      ΔE = 3.793 / LRV ≈ 37.2%
  57. Laura Ashley

    1. 915 Greentree
      #b4a554
      ΔE = 3.760 / LRV ≈ 37.3%
  58. Sanderson

    1. Brazen Yellow
      #cfb14f
      ΔE = 3.781 / LRV ≈ 45.3%
  59. Sherwin-Williams

    1. Sassy Green - 6416
      #bba86a
      ΔE = 3.900 / LRV ≈ 39.6%
    2. Antiquity - 6402
      #c2a462
      ΔE = 4.569 / LRV ≈ 38.9%
  60. Coronado Paint

    1. 7854 - September Sun
      #d0b251
      ΔE = 3.906 / LRV ≈ 45.8%
    2. 7838 - Garden Element
      #bba156
      ΔE = 4.364 / LRV ≈ 36.7%
  61. Zoffany

    1. Manila
      #c7b472
      ΔE = 3.923 / LRV ≈ 46.0%
  62. Natural Color System / NCS

    1. S 2030-G80Y
      #c8b85d
      ΔE = 3.969 / LRV ≈ 47.4%
    2. S 2030-G90Y
      #d1b65d
      ΔE = 4.083 / LRV ≈ 47.8%
  63. Farrow & Ball

    1. Sudbury Yellow / 51
      #d3b158
      ΔE = 4.201 / LRV ≈ 46.0%
    2. Print Room Yellow / 69
      #d4ae4b
      ΔE = 5.136 / LRV ≈ 44.8%
  64. Benjamin Moore

    1. Savannah Green / 2150-30
      #bba150
      ΔE = 4.231 / LRV ≈ 36.6%
    2. Split Pea / 2146-30
      #b2ae56
      ΔE = 4.645 / LRV ≈ 40.4%
  65. Volkswagen

    1. Pampas Yellow
      #baa151
      ΔE = 4.238 / LRV ≈ 36.5%
    2. Savannah Beige
      #b8ae76
      ΔE = 5.232 / LRV ≈ 41.8%
  66. Johnstone's Paint

    1. French Lime
      #c0b769
      ΔE = 4.271 / LRV ≈ 46.1%
  67. Humbrol

    1. 168 Hemp
      #baa566
      ΔE = 4.273 / LRV ≈ 38.3%
  68. Beckers

    1. Svamp 623 / S 5040-Y10R
      #b2a84c
      ΔE = 4.301 / LRV ≈ 38.0%
    2. Kummin 644 / S 4040-Y10R
      #c2b85c
      ΔE = 4.424 / LRV ≈ 46.5%
  69. Pantone / PMS

    1. 618
      #b3ab4a
      ΔE = 4.488 / LRV ≈ 39.2%
    2. 4515
      #b5a66b
      ΔE = 4.996 / LRV ≈ 38.2%
  70. Tamiya

    1. Tamiya 80360,XF60
      #c6b141
      ΔE = 4.502 / LRV ≈ 43.8%
    2. Tamiya 80031,X31
      #cbba72
      ΔE = 5.047 / LRV ≈ 49.0%
  71. Sto

    1. 31110
      #bab563
      ΔE = 4.523 / LRV ≈ 44.4%
    2. 31320
      #d1b772
      ΔE = 5.126 / LRV ≈ 48.6%
  72. Chrysler

    1. Yellow Lustre
      #bfb276
      ΔE = 4.554 / LRV ≈ 44.2%
    2. Cream
      #cab950
      ΔE = 5.197 / LRV ≈ 47.8%
  73. Clark+Kensington

    1. Appletini / 24C-6
      #c9b64c
      ΔE = 4.571 / LRV ≈ 46.4%
    2. Chopped Sage / 23B-5
      #c9b176
      ΔE = 4.765 / LRV ≈ 45.2%
  74. Caparol

    1. 65 25 80 / Palazzo 195
      #c0ac74
      ΔE = 4.589 / LRV ≈ 42.0%
    2. 20/13
      #b8a05c
      ΔE = 5.101 / LRV ≈ 36.1%
  75. TRUMATCH

    1. 9-b4
      #d1b76c
      ΔE = 4.613 / LRV ≈ 48.5%
    2. 9-c5
      #c4b077
      ΔE = 4.650 / LRV ≈ 44.1%
  76. Ralph Lauren

    1. Beach Yellow / RLIB209
      #cbac3f
      ΔE = 4.618 / LRV ≈ 42.6%
    2. Golden Sienna / RLVM249
      #cfb371
      ΔE = 4.705 / LRV ≈ 46.7%
  77. Color Truck System

    1. 1*008 / 1*008
      #d2b758
      ΔE = 4.621 / LRV ≈ 48.3%
  78. Vallejo

    1. Vallejo 70.916 #9
      #c9b873
      ΔE = 4.660 / LRV ≈ 47.9%
  79. Resene

    1. Tacha Y78-089-088
      #d2b960
      ΔE = 4.806 / LRV ≈ 49.2%
    2. Iko Iko G75-060-093
      #b3ab6e
      ΔE = 5.106 / LRV ≈ 39.8%
  80. KILZ

    1. Ripe Olives / F542
      #bfa569
      ΔE = 4.807 / LRV ≈ 39.0%
    2. Matisse Gold / E672
      #cea860
      ΔE = 5.028 / LRV ≈ 42.0%
  81. ARO

    1. Creme / 796
      #c7b278
      ΔE = 4.825 / LRV ≈ 45.3%
  82. Jotun

    1. 8199 / Frisk
      #b9b46d
      ΔE = 4.846 / LRV ≈ 44.1%
  83. Sikkens

    1. G4.40.60
      #b3a148
      ΔE = 4.920 / LRV ≈ 35.5%
    2. G4.30.60
      #b1a362
      ΔE = 5.240 / LRV ≈ 36.4%
  84. Peintures MF

    1. Rossignol
      #c8ac72
      ΔE = 4.943 / LRV ≈ 43.0%
  85. Bentley

    1. Citric / LK1C
      #cbba58
      ΔE = 4.957 / LRV ≈ 48.5%
  86. Model Master

    1. Model Master 1744
      #c5ab73
      ΔE = 5.004 / LRV ≈ 42.2%
  87. Crayola

    1. Olive Green
      #b5b35c
      ΔE = 5.051 / LRV ≈ 42.8%
  88. Designers Guild

    1. Cypress
      #b3b051
      ΔE = 5.068 / LRV ≈ 41.2%

Symulacja Daltonizmu

Monochromacy

Dichromacy

Trichromacy

#c2ad5a HTML & CSS Przykłady

#c2ad5a pierwszoplanowy

Kwiat bez zapachu, jak człowiek bez duszy.

<p style="color: #c2ad5a">…</p>

#c2ad5a tło

Co nagle, to po diable.

<p style="background-color: #c2ad5a">…</p>

#c2ad5a cień tekstu

Co ciało lubi, to duszę zgubi.

<p style="text-shadow: 0.1em 0.1em 0.15em #c2ad5a">…</p>

Wykresy Kompozycji

Przestrzenie kolorów

Dziesiątkowy
12758362
Dwójkowy
11000010, 10101101, 01011010
Hexadecimal
#c2ad5a
LRV
≈ 42.1%
Najbliższy krótki kolor szesnastkowy
#ba5 ΔE = 1.825
RGB
rgb(194, 173, 90)
RGBA
rgba(194, 173, 90, 1.0)
rg chromatyczności
r: 0.425, g: 0.379, b: 0.197
RYB
czerwony: 45.613%, żółty: 76.078%, niebieski: 35.294%
Android / android.graphics.Color
-4018854 / 0xffc2ad5a
HSL
hsl(48, 46%, 56%)
HSLA
hsla(48, 46%, 56%, 1.0)
HSV / HSB
barwa: 48° (47.885), nasycenie: 54% (0.536), wartość: 76% (0.761)
HSP
barwa: 47.885, nasycenie: 53.608%, postrzegana jasność: 67.634%
HSLuv (HUSL)
H: 71.665, S: 72.609, L: 70.937
Cubehelix
H: 46.202, S: 0.739, L: 0.667
TSL
T: 1.994, S: 0.137, L: 0.666
CMYK
cyjan: 0% (0.000), magenta: 11% (0.108), żółty: 54% (0.536), czarna: 24% (0.239)
CMY
cyjan: 24% (0.239), magenta: 32% (0.322), żółty: 65% (0.647)
XYZ
X: 39.039, Y: 42.096, Z: 15.740
xyY
x: 0.403, y: 0.435, Y: 42.096
CIELab
L: 70.937, a: -3.062, b: 44.927
CIELuv
L: 70.937, u: 18.199, v: 54.918
CIELCH / LCHab
L: 70.937, C: 45.031, H: 93.899
CIELUV / LCHuv
L: 70.937, C: 57.855, H: 71.665
Hunter-Lab
L: 64.882, a: -6.142, b: 31.034
CIECAM02
J: 62.826, C: 37.559, h: 92.043, Q: 156.164, M: 32.845, s: 45.861, H: 103.885
OSA-UCS
lekkość: -9.872, żółty: 6.574, zielony: 0.461
LMS
L: 44.136, M: 44.087, S: 16.168
YCbCr
Y: 161.870, Cb: 88.455, Cr: 143.112
YCoCg
Y: 157.500, Cg: 15.500, Co: 74.500
YDbDr
Y: 169.817, Db: -120.089, Dr: -46.004
YPbPr
Y: 171.497, Pb: -43.915, Pr: 14.318
xvYCC
Y: 163.286, Cb: 89.424, Cr: 140.577
YIQ
Y: 169.817, I: 39.175, Q: -21.384
YUV
Y: 169.817, U: -39.276, V: 21.216
System Koloru Munsell
5Y 7/6 ΔE = 0.884
Kolor marki
Big Cartel ΔE = 11.557

Przypadkowe Kolory

Czerwony

Zielony

Niebieski