Colour

#645C31

#645C31
Yellow
Dark
Nearest: Dark olivegreen

#645C31 is a yellow with RGB values 100, 92, 49 and HSL 51°, 34%, 29%. It is a dark colour, so white text on it reaches 6.7:1 contrast (AA for normal text). The nearest named colour is Dark olivegreen.

Colour values

#645C31#645C31

HEX#645C31

RGBrgb(100, 92, 49)

RGB (0–1)0.3922, 0.3608, 0.1922

RGB percentages39.2%, 36.1%, 19.2%

HSLhsl(50.6, 34.2%, 29.2%)

HSV / HSBhsv(50.6, 51%, 39.2%)

CMYK0%, 8%, 51%, 60.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,577,201

CSS custom property--colour: #645C31;

Brightness & contrast

Relative luminance0.10585WCAG 2.x, 0 is black and 1 is white

Perceived brightness90.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.74:1

Contrast with white6.74:1WCAG normal text: AA

Contrast with black3.12:1WCAG normal text: Fail

Greyscale equivalent#5B5B5B

Inverted#9BA3CE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#635A2Dno red cones; affects about 1% of men; ΔE 1.5 from the original

Deuteranopia#665D33no green cones; the most common form, about 1% of men; ΔE 0.9 from the original

Tritanopia#6B5652no blue cones; rare, and affects men and women equally; ΔE 23.1 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text6.74:1WCAG large text: AAA

Contrast with black, large text3.12:1WCAG large text: AA

Named colours

Dark olivegreen · ΔE 16.5 Dim grey · ΔE 26.6 Gray · ΔE 29.9 Dark slate grey · ΔE 31.6 Saddle brown · ΔE 33.5 Sienna · ΔE 34.5

Nearest named CSS colourDark olivegreen (#556B2F)ΔE 16.54, a distinctly different colour

Hue familyyellow

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#313964

Analogous#644231, #526431

Triadic#31645C, #5C3164

Split complementary#315264, #423164

Tetradic#316443, #313964, #643153

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#CBC396

Lighter +30%#BBAF73

Lighter +20%#A89B53

Lighter +10%#867B42

Darker −10%#423D20

Darker −20%#201D0F

Darker −30%#000000

Darker −40%#000000

More saturated +25%#77691E

Less saturated −25%#514F44

Channel breakdown

R100

G92

B49

Red100 (39.2%)

Green92 (36.1%)

Blue49 (19.2%)

Hue50.59°

Saturation (HSL)34.23%

Lightness29.22%

Dominant channelRed

Hex per channelR 64 · G 5C · B 31

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#645C31

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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