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Colour

#31497D

  • #31497D
  • Blue
  • Dark
  • Nearest: Dark slateblue

#31497D is a blue with RGB values 49, 73, 125 and HSL 221°, 44%, 34%. It is a dark colour, so white text on it reaches 8.8:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#31497D#31497D
HEX#31497D
RGBrgb(49, 73, 125)
RGB (0–1)0.1922, 0.2863, 0.4902
RGB percentages19.2%, 28.6%, 49%
HSLhsl(221.1, 43.7%, 34.1%)
HSV / HSBhsv(221.1, 60.8%, 49%)
CMYK60.8%, 41.6%, 0%, 51%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,230,077
CSS custom property--colour: #31497D;

Brightness & contrast

Relative luminance0.06899WCAG 2.x, 0 is black and 1 is white
Perceived brightness75 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.82:1
Contrast with white8.82:1WCAG normal text: AAA
Contrast with black2.38:1WCAG normal text: Fail
Greyscale equivalent#484848
Inverted#CEB682

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#334E7Fno red cones; affects about 1% of men; ΔE 3.2 from the original
Deuteranopia#29477Cno green cones; the most common form, about 1% of men; ΔE 1.7 from the original
Tritanopia#00555Dno blue cones; rare, and affects men and women equally; ΔE 34.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.82:1WCAG large text: AAA
Contrast with black, large text2.38:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 20.6Steel blue · ΔE 24.1Slate grey · ΔE 32Midnight blue · ΔE 33.3Light slate grey · ΔE 33.9Dark slate grey · ΔE 34.7
Nearest named CSS colourDark slateblue (#483D8B)ΔE 20.58, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7D6531
Analogous#316F7D, #3F317D
Triadic#7D3149, #497D31
Split complementary#7D3F31, #6F7D31
Tetradic#7D316F, #7D6531, #317D3F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A0B2DA
Lighter +30%#7C95CB
Lighter +20%#5777BD
Lighter +10%#3F5EA2
Darker −10%#233458
Darker −20%#141E34
Darker −30%#06090F
Darker −40%#000000
More saturated +25%#1B4193
Less saturated −25%#475167

Channel breakdown

R49
G73
B125
Red49 (19.2%)
Green73 (28.6%)
Blue125 (49%)
Hue221.05°
Saturation (HSL)43.68%
Lightness34.12%
Dominant channelBlue
Hex per channelR 31 · G 49 · B 7D

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Every value on this page was computed from “31497d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.