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Recognised as Colour

#311F53

  • #311F53
  • Violet
  • Dark
  • Nearest: Dark slateblue

#311F53 is a violet with RGB values 49, 31, 83 and HSL 261°, 46%, 22%. It is a dark colour, so white text on it reaches 14.5:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#311F53#311F53
HEX#311F53
RGBrgb(49, 31, 83)
RGB (0–1)0.1922, 0.1216, 0.3255
RGB percentages19.2%, 12.2%, 32.5%
HSLhsl(260.8, 45.6%, 22.4%)
HSV / HSBhsv(260.8, 62.7%, 32.5%)
CMYK41%, 62.7%, 0%, 67.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,219,283
CSS custom property--colour: #311F53;

Brightness & contrast

Relative luminance0.02257WCAG 2.x, 0 is black and 1 is white
Perceived brightness45.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.47:1
Contrast with white14.47:1WCAG normal text: AAA
Contrast with black1.45:1WCAG normal text: Fail
Greyscale equivalent#272727
Inverted#CEE0AC

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#052A55no red cones; affects about 1% of men; ΔE 15.9 from the original
Deuteranopia#0B2952no green cones; the most common form, about 1% of men; ΔE 15.8 from the original
Tritanopia#292A35no blue cones; rare, and affects men and women equally; ΔE 29.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text14.47:1WCAG large text: AAA
Contrast with black, large text1.45:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 19.8Midnight blue · ΔE 22.9Rebecca purple · ΔE 32.1Indigo · ΔE 38.6Purple · ΔE 39.8Black · ΔE 40
Nearest named CSS colourDark slateblue (#483D8B)ΔE 19.76, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#41531F
Analogous#1F2753, #4B1F53
Triadic#53311F, #1F5331
Split complementary#534B1F, #27531F
Tetradic#531F27, #41531F, #1F534B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9273CB
Lighter +30%#744EBD
Lighter +20%#5D3B9D
Lighter +10%#472D78
Darker −10%#1B112E
Darker −20%#050309
Darker −30%#000000
Darker −40%#000000
More saturated +25%#2D1161
Less saturated −25%#352D45

Channel breakdown

R49
G31
B83
Red49 (19.2%)
Green31 (12.2%)
Blue83 (32.5%)
Hue260.77°
Saturation (HSL)45.61%
Lightness22.35%
Dominant channelBlue
Hex per channelR 31 · G 1F · B 53

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Every value on this page was computed from “311f53” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.