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Colour

#666E1B

  • #666E1B
  • Yellow
  • Dark
  • Nearest: Dark olivegreen

#666E1B is a yellow with RGB values 102, 110, 27 and HSL 66°, 61%, 27%. It is a dark colour, so white text on it reaches 5.5:1 contrast (AA for normal text). The nearest named colour is Dark olivegreen.

Colour values

#666E1B#666E1B
HEX#666E1B
RGBrgb(102, 110, 27)
RGB (0–1)0.4, 0.4314, 0.1059
RGB percentages40%, 43.1%, 10.6%
HSLhsl(65.8, 60.6%, 26.9%)
HSV / HSBhsv(65.8, 75.5%, 43.1%)
CMYK7.3%, 0%, 75.5%, 56.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,712,859
CSS custom property--colour: #666E1B;

Brightness & contrast

Relative luminance0.14056WCAG 2.x, 0 is black and 1 is white
Perceived brightness101.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.51:1
Contrast with white5.51:1WCAG normal text: AA
Contrast with black3.81:1WCAG normal text: Fail
Greyscale equivalent#666666
Inverted#9991E4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#76680Cno red cones; affects about 1% of men; ΔE 11.6 from the original
Deuteranopia#766922no green cones; the most common form, about 1% of men; ΔE 11 from the original
Tritanopia#6D675Eno blue cones; rare, and affects men and women equally; ΔE 39.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text5.51:1WCAG large text: AAA
Contrast with black, large text3.81:1WCAG large text: AA

Named colours

Dark olivegreen · ΔE 12.9Olive · ΔE 16.1Olivedrab · ΔE 18.6Dark khaki · ΔE 29.8Dark green · ΔE 30Sea green · ΔE 34.6
Nearest named CSS colourDark olivegreen (#556B2F)ΔE 12.89, a distinctly different colour
Hue familyyellow
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#231B6E
Analogous#6E4D1B, #3C6E1B
Triadic#1B666E, #6E1B66
Split complementary#1B3C6E, #4D1B6E
Tetradic#1B6E4D, #231B6E, #6E1B3C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D4DE77
Lighter +30%#C7D44E
Lighter +20%#B2C02F
Lighter +10%#8C9725
Darker −10%#404511
Darker −20%#1A1C07
Darker −30%#000000
Darker −40%#000000
More saturated +25%#747F0A
Less saturated −25%#585D2C

Channel breakdown

R102
G110
B27
Red102 (40%)
Green110 (43.1%)
Blue27 (10.6%)
Hue65.78°
Saturation (HSL)60.58%
Lightness26.86%
Dominant channelGreen
Hex per channelR 66 · G 6E · B 1B

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Every value on this page was computed from “666e1b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.