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Recognised as Colour

#331D58

  • #331D58
  • Violet
  • Dark
  • Nearest: Dark slateblue

#331D58 is a violet with RGB values 51, 29, 88 and HSL 262°, 50%, 23%. It is a dark colour, so white text on it reaches 14.4:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#331D58#331D58
HEX#331D58
RGBrgb(51, 29, 88)
RGB (0–1)0.2, 0.1137, 0.3451
RGB percentages20%, 11.4%, 34.5%
HSLhsl(262.4, 50.4%, 22.9%)
HSV / HSBhsv(262.4, 67%, 34.5%)
CMYK42%, 67%, 0%, 65.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,349,848
CSS custom property--colour: #331D58;

Brightness & contrast

Relative luminance0.02287WCAG 2.x, 0 is black and 1 is white
Perceived brightness46.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.41:1
Contrast with white14.41:1WCAG normal text: AAA
Contrast with black1.46:1WCAG normal text: Fail
Greyscale equivalent#262626
Inverted#CCE2A7

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#002A5Ano red cones; affects about 1% of men; ΔE 17.5 from the original
Deuteranopia#022957no green cones; the most common form, about 1% of men; ΔE 17.9 from the original
Tritanopia#2A2A37no blue cones; rare, and affects men and women equally; ΔE 32.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text14.41:1WCAG large text: AAA
Contrast with black, large text1.46:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 17.3Midnight blue · ΔE 18.8Rebecca purple · ΔE 28.1Indigo · ΔE 34.1Purple · ΔE 36.2Navy · ΔE 39.7
Nearest named CSS colourDark slateblue (#483D8B)ΔE 17.25, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#42581D
Analogous#1D2558, #501D58
Triadic#58331D, #1D5833
Split complementary#58501D, #25581D
Tetradic#581D25, #42581D, #1D5850

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9471D0
Lighter +30%#784AC4
Lighter +20%#5F36A5
Lighter +10%#492A7E
Darker −10%#1D1032
Darker −20%#07040B
Darker −30%#000000
Darker −40%#000000
More saturated +25%#2F0E67
Less saturated −25%#372C49

Channel breakdown

R51
G29
B88
Red51 (20%)
Green29 (11.4%)
Blue88 (34.5%)
Hue262.37°
Saturation (HSL)50.43%
Lightness22.94%
Dominant channelBlue
Hex per channelR 33 · G 1D · B 58

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Every value on this page was computed from “331d58” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.