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Recognised as Colour

#A31BB1

  • #A31BB1
  • Magenta
  • Dark
  • Nearest: Dark orchid

#A31BB1 is a magenta with RGB values 163, 27, 177 and HSL 294°, 74%, 40%. It is a dark colour, so white text on it reaches 6.3:1 contrast (AA for normal text). The nearest named colour is Dark orchid.

Colour values

#A31BB1#A31BB1
HEX#A31BB1
RGBrgb(163, 27, 177)
RGB (0–1)0.6392, 0.1059, 0.6941
RGB percentages63.9%, 10.6%, 69.4%
HSLhsl(294.4, 73.5%, 40%)
HSV / HSBhsv(294.4, 84.7%, 69.4%)
CMYK7.9%, 84.7%, 0%, 30.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer10,689,457
CSS custom property--colour: #A31BB1;

Brightness & contrast

Relative luminance0.11745WCAG 2.x, 0 is black and 1 is white
Perceived brightness109.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.27:1
Contrast with white6.27:1WCAG normal text: AA
Contrast with black3.35:1WCAG normal text: Fail
Greyscale equivalent#434343
Inverted#5CE44E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0056B5no red cones; affects about 1% of men; ΔE 52.8 from the original
Deuteranopia#3B65AEno green cones; the most common form, about 1% of men; ΔE 59.4 from the original
Tritanopia#A63D6Ano blue cones; rare, and affects men and women equally; ΔE 49.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.27:1WCAG large text: AAA
Contrast with black, large text3.35:1WCAG large text: AA

Named colours

Dark orchid · ΔE 12.5Dark magenta · ΔE 14Medium orchid · ΔE 16Purple · ΔE 18.9Dark violet · ΔE 23.3Blue violet · ΔE 26.5
Nearest named CSS colourDark orchid (#9932CC)ΔE 12.52, a distinctly different colour
Hue familymagenta
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#29B11B
Analogous#581BB1, #B11B74
Triadic#B1A31B, #1BB1A3
Split complementary#74B11B, #1BB158
Tetradic#B1581B, #29B11B, #1B74B1

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EBA7F2
Lighter +30%#E07AEB
Lighter +20%#D64EE4
Lighter +10%#CC22DD
Darker −10%#7A1485
Darker −20%#510E59
Darker −30%#29072C
Darker −40%#000000
More saturated +25%#B801CB
Less saturated −25%#8E3598

Channel breakdown

R163
G27
B177
Red163 (63.9%)
Green27 (10.6%)
Blue177 (69.4%)
Hue294.4°
Saturation (HSL)73.53%
Lightness40%
Dominant channelBlue
Hex per channelR A3 · G 1B · B B1

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Every value on this page was computed from “a31bb1” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.