Colour

#37393F

#37393F
Grey
Dark
Nearest: Dark slate grey

#37393F is a grey with RGB values 55, 57, 63 and HSL 225°, 7%, 23%. It is a dark colour, so white text on it reaches 11.5:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#37393F#37393F

HEX#37393F

RGBrgb(55, 57, 63)

RGB (0–1)0.2157, 0.2235, 0.2471

RGB percentages21.6%, 22.4%, 24.7%

HSLhsl(225, 6.8%, 23.1%)

HSV / HSBhsv(225, 12.7%, 24.7%)

CMYK12.7%, 9.5%, 0%, 75.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer3,619,135

CSS custom property--colour: #37393F;

Brightness & contrast

Relative luminance0.04097WCAG 2.x, 0 is black and 1 is white

Perceived brightness57.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 11.54:1

Contrast with white11.54:1WCAG normal text: AAA

Contrast with black1.82:1WCAG normal text: Fail

Greyscale equivalent#393939

Inverted#C8C6C0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#37393Fno red cones; affects about 1% of men; ΔE 0 from the original

Deuteranopia#37393Fno green cones; the most common form, about 1% of men; ΔE 0 from the original

Tritanopia#353A3Bno blue cones; rare, and affects men and women equally; ΔE 3.6 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text11.54:1WCAG large text: AAA

Contrast with black, large text1.82:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 14.3 Dim grey · ΔE 20.8 Black · ΔE 24.3 Slate grey · ΔE 29.7 Gray · ΔE 29.9 Light slate grey · ΔE 32.8

Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 14.31, a distinctly different colour

Hue familygrey

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#3F3D37

Analogous#373D3F, #39373F

Triadic#3F3739, #393F37

Split complementary#3F3937, #3D3F37

Tetradic#3F373D, #3F3D37, #373F39

Tints, shades & saturation

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

Lighter +40%#9B9EA7

Lighter +30%#7F8390

Lighter +20%#676A75

Lighter +10%#4F525A

Darker −10%#1F2024

Darker −20%#070809

Darker −30%#000000

Darker −40%#000000

More saturated +25%#28324E

Less saturated −25%#3B3B3B

Channel breakdown

R55

G57

B63

Red55 (21.6%)

Green57 (22.4%)

Blue63 (24.7%)

Hue225°

Saturation (HSL)6.78%

Lightness23.14%

Dominant channelBlue

Hex per channelR 37 · G 39 · B 3F

Keep nerding

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#37393F

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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