Colour

#39373F

#39373F
Grey
Dark
Nearest: Dark slate grey

#39373F is a grey with RGB values 57, 55, 63 and HSL 255°, 7%, 23%. It is a dark colour, so white text on it reaches 11.7:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#39373F#39373F

HEX#39373F

RGBrgb(57, 55, 63)

RGB (0–1)0.2235, 0.2157, 0.2471

RGB percentages22.4%, 21.6%, 24.7%

HSLhsl(255, 6.8%, 23.1%)

HSV / HSBhsv(255, 12.7%, 24.7%)

CMYK9.5%, 12.7%, 0%, 75.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer3,749,695

CSS custom property--colour: #39373F;

Brightness & contrast

Relative luminance0.03961WCAG 2.x, 0 is black and 1 is white

Perceived brightness56.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 11.72:1

Contrast with white11.72:1WCAG normal text: AAA

Contrast with black1.79:1WCAG normal text: Fail

Greyscale equivalent#383838

Inverted#C6C8C0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#36383Fno red cones; affects about 1% of men; ΔE 1.9 from the original

Deuteranopia#36383Fno green cones; the most common form, about 1% of men; ΔE 1.9 from the original

Tritanopia#38383Ano blue cones; rare, and affects men and women equally; ΔE 4.1 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text11.72:1WCAG large text: AAA

Contrast with black, large text1.79:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 16.4 Dim grey · ΔE 21.6 Black · ΔE 24.2 Slate grey · ΔE 30.3 Gray · ΔE 30.5 Light slate grey · ΔE 33.4

Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 16.43, a distinctly different colour

Hue familygrey

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#3D3F37

Analogous#37393F, #3D373F

Triadic#3F3937, #373F39

Split complementary#3F3D37, #393F37

Tetradic#3F3739, #3D3F37, #373F3D

Tints, shades & saturation

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

Lighter +40%#9E9BA7

Lighter +30%#837F90

Lighter +20%#6A6775

Lighter +10%#524F5A

Darker −10%#201F24

Darker −20%#080709

Darker −30%#000000

Darker −40%#000000

More saturated +25%#32284E

Less saturated −25%#3B3B3B

Channel breakdown

R57

G55

B63

Red57 (22.4%)

Green55 (21.6%)

Blue63 (24.7%)

Hue255°

Saturation (HSL)6.78%

Lightness23.14%

Dominant channelBlue

Hex per channelR 39 · G 37 · B 3F

Keep nerding

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#39373F

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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