Colour

#31083B

#31083B
Violet
Dark
Nearest: Midnight blue

#31083B is a violet with RGB values 49, 8, 59 and HSL 288°, 76%, 13%. It is a dark colour, so white text on it reaches 17.1:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#31083B#31083B

HEX#31083B

RGBrgb(49, 8, 59)

RGB (0–1)0.1922, 0.0314, 0.2314

RGB percentages19.2%, 3.1%, 23.1%

HSLhsl(288.2, 76.1%, 13.1%)

HSV / HSBhsv(288.2, 86.4%, 23.1%)

CMYK16.9%, 86.4%, 0%, 76.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer3,213,371

CSS custom property--colour: #31083B;

Brightness & contrast

Relative luminance0.01142WCAG 2.x, 0 is black and 1 is white

Perceived brightness33.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 17.09:1

Contrast with white17.09:1WCAG normal text: AAA

Contrast with black1.23:1WCAG normal text: Fail

Greyscale equivalent#141414

Inverted#CEF7C4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#00193Cno red cones; affects about 1% of men; ΔE 22.1 from the original

Deuteranopia#0B1D3Ano green cones; the most common form, about 1% of men; ΔE 24.1 from the original

Tritanopia#311321no blue cones; rare, and affects men and women equally; ΔE 23.1 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text17.09:1WCAG large text: AAA

Contrast with black, large text1.23:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 27.6 Dark slateblue · ΔE 28.4 Rebecca purple · ΔE 36.3 Black · ΔE 38 Purple · ΔE 38.6 Indigo · ΔE 39.6

Nearest named CSS colourMidnight blue (#191970)ΔE 27.58, a distinctly different colour

Hue familyviolet

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#123B08

Analogous#17083B, #3B082C

Triadic#3B3108, #083B31

Split complementary#2B3B08, #083B18

Tetradic#3B1808, #123B08, #082B3B

Tints, shades & saturation

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

Lighter +40%#BF2DE2

Lighter +30%#A11AC2

Lighter +20%#7C1495

Lighter +10%#560E68

Darker −10%#0C020E

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#360043

Less saturated −25%#2C1033

Channel breakdown

R49

B59

Red49 (19.2%)

Green8 (3.1%)

Blue59 (23.1%)

Hue288.24°

Saturation (HSL)76.12%

Lightness13.14%

Dominant channelBlue

Hex per channelR 31 · G 08 · B 3B

Keep nerding

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#31083B

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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