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Recognised as Colour

#665B2B

  • #665B2B
  • Yellow
  • Dark
  • Nearest: Dark olivegreen

#665B2B is a yellow with RGB values 102, 91, 43 and HSL 49°, 41%, 28%. It is a dark colour, so white text on it reaches 6.8:1 contrast (AA for normal text). The nearest named colour is Dark olivegreen.

Colour values

#665B2B#665B2B
HEX#665B2B
RGBrgb(102, 91, 43)
RGB (0–1)0.4, 0.3569, 0.1686
RGB percentages40%, 35.7%, 16.9%
HSLhsl(48.8, 40.7%, 28.4%)
HSV / HSBhsv(48.8, 57.8%, 40%)
CMYK0%, 10.8%, 57.8%, 60%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,708,011
CSS custom property--colour: #665B2B;

Brightness & contrast

Relative luminance0.10481WCAG 2.x, 0 is black and 1 is white
Perceived brightness90.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.78:1
Contrast with white6.78:1WCAG normal text: AA
Contrast with black3.1:1WCAG normal text: Fail
Greyscale equivalent#5A5A5A
Inverted#99A4D4

Colour vision & accessibility

Protanopia#635927no red cones; affects about 1% of men; ΔE 1.5 from the original
Deuteranopia#665D2Dno green cones; the most common form, about 1% of men; ΔE 1.2 from the original
Tritanopia#6E5550no blue cones; rare, and affects men and women equally; ΔE 25.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.78:1WCAG large text: AAA
Contrast with black, large text3.1:1WCAG large text: AA

Named colours

Nearest named CSS colourDark olivegreen (#556B2F)ΔE 16.85, a distinctly different colour
Hue familyyellow
CSS keyword usableNo exact keyword

Colour harmonies

Complementary#2B3666
Analogous#663D2B, #54662B
Triadic#2B665B, #5B2B66
Split complementary#2B5466, #3D2B66
Tetradic#2B663D, #2B3666, #662B54

Tints, shades & saturation

Lighter +40%#CFC38E
Lighter +30%#C0B06A
Lighter +20%#AE9B49
Lighter +10%#8A7B3A
Darker −10%#423B1C
Darker −20%#1E1B0D
Darker −30%#000000
Darker −40%#000000
More saturated +25%#786619
Less saturated −25%#54503D

Channel breakdown

R102
G91
B43
Red102 (40%)
Green91 (35.7%)
Blue43 (16.9%)
Hue48.81°
Saturation (HSL)40.69%
Lightness28.43%
Dominant channelRed
Hex per channelR 66 · G 5B · B 2B

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Every value on this page was computed from “665b2b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.