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Recognised as Colour

#645E3D

  • #645E3D
  • Yellow
  • Dark
  • Nearest: Dark olivegreen

#645E3D is a yellow with RGB values 100, 94, 61 and HSL 51°, 24%, 32%. It is a dark colour, so white text on it reaches 6.5:1 contrast (AA for normal text). The nearest named colour is Dark olivegreen.

Colour values

#645E3D#645E3D
HEX#645E3D
RGBrgb(100, 94, 61)
RGB (0–1)0.3922, 0.3686, 0.2392
RGB percentages39.2%, 36.9%, 23.9%
HSLhsl(50.8, 24.2%, 31.6%)
HSV / HSBhsv(50.8, 39%, 39.2%)
CMYK0%, 6%, 39%, 60.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,577,725
CSS custom property--colour: #645E3D;

Brightness & contrast

Relative luminance0.11052WCAG 2.x, 0 is black and 1 is white
Perceived brightness92.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.54:1
Contrast with white6.54:1WCAG normal text: AA
Contrast with black3.21:1WCAG normal text: Fail
Greyscale equivalent#5D5D5D
Inverted#9BA1C2

Colour vision & accessibility

Protanopia#645C3Bno red cones; affects about 1% of men; ΔE 1.2 from the original
Deuteranopia#665F3Eno green cones; the most common form, about 1% of men; ΔE 0.7 from the original
Tritanopia#6A5A56no blue cones; rare, and affects men and women equally; ΔE 17.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.54:1WCAG large text: AAA
Contrast with black, large text3.21:1WCAG large text: AA

Named colours

Nearest named CSS colourDark olivegreen (#556B2F)ΔE 19.23, a distinctly different colour
Hue familyyellow
CSS keyword usableNo exact keyword

Colour harmonies

Complementary#3D4364
Analogous#644B3D, #56643D
Triadic#3D645E, #5E3D64
Split complementary#3D5764, #4A3D64
Tetradic#3D644B, #3D4364, #643D57

Tints, shades & saturation

Lighter +40%#C8C3A5
Lighter +30%#B5AD85
Lighter +20%#A19866
Lighter +10%#847C50
Darker −10%#44402A
Darker −20%#252216
Darker −30%#050503
Darker −40%#000000
More saturated +25%#786C29
Less saturated −25%#515151

Channel breakdown

R100
G94
B61
Red100 (39.2%)
Green94 (36.9%)
Blue61 (23.9%)
Hue50.77°
Saturation (HSL)24.22%
Lightness31.57%
Dominant channelRed
Hex per channelR 64 · G 5E · B 3D

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Every value on this page was computed from “645e3d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.