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Recognised as Colour

#313A37

  • #313A37
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#313A37 is a cyan with RGB values 49, 58, 55 and HSL 160°, 8%, 21%. 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

#313A37#313A37
HEX#313A37
RGBrgb(49, 58, 55)
RGB (0–1)0.1922, 0.2275, 0.2157
RGB percentages19.2%, 22.7%, 21.6%
HSLhsl(160, 8.4%, 21%)
HSV / HSBhsv(160, 15.5%, 22.7%)
CMYK15.5%, 0%, 5.2%, 77.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,226,167
CSS custom property--colour: #313A37;

Brightness & contrast

Relative luminance0.03955WCAG 2.x, 0 is black and 1 is white
Perceived brightness55.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.73:1
Contrast with white11.73:1WCAG normal text: AAA
Contrast with black1.79:1WCAG normal text: Fail
Greyscale equivalent#383838
Inverted#CEC5C8

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#393937no red cones; affects about 1% of men; ΔE 4.1 from the original
Deuteranopia#383737no green cones; the most common form, about 1% of men; ΔE 5 from the original
Tritanopia#2F3A39no blue cones; rare, and affects men and women equally; ΔE 1.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.73:1WCAG large text: AAA
Contrast with black, large text1.79:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 11.4Dim grey · ΔE 21.4Black · ΔE 24Gray · ΔE 30.4Slate grey · ΔE 31.5Light slate grey · ΔE 34.5
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 11.43, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#3A3134
Analogous#313A33, #31393A
Triadic#37313A, #3A3731
Split complementary#3A3139, #3A3331
Tetradic#33313A, #3A3134, #393A31

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#93A49E
Lighter +30%#778D86
Lighter +20%#60716B
Lighter +10%#485651
Darker −10%#1A1E1D
Darker −20%#020303
Darker −30%#000000
Darker −40%#000000
More saturated +25%#24473B
Less saturated −25%#363636

Channel breakdown

R49
G58
B55
Red49 (19.2%)
Green58 (22.7%)
Blue55 (21.6%)
Hue160°
Saturation (HSL)8.41%
Lightness20.98%
Dominant channelGreen
Hex per channelR 31 · G 3A · B 37

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Every value on this page was computed from “313a37” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.