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Recognised as Colour

#31586C

  • #31586C
  • Blue
  • Dark
  • Nearest: Dark slate grey

#31586C is a blue with RGB values 49, 88, 108 and HSL 200°, 38%, 31%. It is a dark colour, so white text on it reaches 7.7:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#31586C#31586C
HEX#31586C
RGBrgb(49, 88, 108)
RGB (0–1)0.1922, 0.3451, 0.4235
RGB percentages19.2%, 34.5%, 42.4%
HSLhsl(200.3, 37.6%, 30.8%)
HSV / HSBhsv(200.3, 54.6%, 42.4%)
CMYK54.6%, 18.5%, 0%, 57.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,233,900
CSS custom property--colour: #31586C;

Brightness & contrast

Relative luminance0.08715WCAG 2.x, 0 is black and 1 is white
Perceived brightness81.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.66:1
Contrast with white7.66:1WCAG normal text: AAA
Contrast with black2.74:1WCAG normal text: Fail
Greyscale equivalent#515151
Inverted#CEA793

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4E576Dno red cones; affects about 1% of men; ΔE 9.9 from the original
Deuteranopia#46516Cno green cones; the most common form, about 1% of men; ΔE 10.6 from the original
Tritanopia#0E5D5Fno blue cones; rare, and affects men and women equally; ΔE 15.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.66:1WCAG large text: AAA
Contrast with black, large text2.74:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 13.3Slate grey · ΔE 18.9Dim grey · ΔE 19.6Light slate grey · ΔE 21.7Steel blue · ΔE 24Gray · ΔE 25.2
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 13.34, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6C4531
Analogous#316C63, #313B6C
Triadic#6C3158, #586C31
Split complementary#6C313B, #6C6231
Tetradic#63316C, #6C4531, #3B6C31

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#99BED0
Lighter +30%#75A7C1
Lighter +20%#5291B1
Lighter +10%#41758F
Darker −10%#213B49
Darker −20%#111F26
Darker −30%#010203
Darker −40%#000000
More saturated +25%#1D5E80
Less saturated −25%#455258

Channel breakdown

R49
G88
B108
Red49 (19.2%)
Green88 (34.5%)
Blue108 (42.4%)
Hue200.34°
Saturation (HSL)37.58%
Lightness30.78%
Dominant channelBlue
Hex per channelR 31 · G 58 · B 6C

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Every value on this page was computed from “31586c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.