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Recognised as Colour

#811FB0

  • #811FB0
  • Violet
  • Dark
  • Nearest: Dark orchid

#811FB0 is a violet with RGB values 129, 31, 176 and HSL 281°, 70%, 41%. It is a dark colour, so white text on it reaches 7.6:1 contrast (AAA for normal text). The nearest named colour is Dark orchid.

Colour values

#811FB0#811FB0
HEX#811FB0
RGBrgb(129, 31, 176)
RGB (0–1)0.5059, 0.1216, 0.6902
RGB percentages50.6%, 12.2%, 69%
HSLhsl(280.6, 70%, 40.6%)
HSV / HSBhsv(280.6, 82.4%, 69%)
CMYK26.7%, 82.4%, 0%, 31%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,462,256
CSS custom property--colour: #811FB0;

Brightness & contrast

Relative luminance0.08782WCAG 2.x, 0 is black and 1 is white
Perceived brightness95.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.62:1
Contrast with white7.62:1WCAG normal text: AAA
Contrast with black2.76:1WCAG normal text: Fail
Greyscale equivalent#3E3E3E
Inverted#7EE04F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004FB4no red cones; affects about 1% of men; ΔE 40.8 from the original
Deuteranopia#0055ADno green cones; the most common form, about 1% of men; ΔE 47.9 from the original
Tritanopia#7B4569no blue cones; rare, and affects men and women equally; ΔE 56.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.62:1WCAG large text: AAA
Contrast with black, large text2.76:1WCAG large text: Fail

Named colours

Dark orchid · ΔE 9.3Dark magenta · ΔE 18.1Indigo · ΔE 18.3Medium orchid · ΔE 20.4Dark violet · ΔE 20.7Purple · ΔE 21
Nearest named CSS colourDark orchid (#9932CC)ΔE 9.33, clearly different but related
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#4EB01F
Analogous#391FB0, #B01F96
Triadic#B0811F, #1FB081
Split complementary#96B01F, #1FB039
Tetradic#B0391F, #4EB01F, #1F96B0

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DAABF0
Lighter +30%#C67FE9
Lighter +20%#B354E1
Lighter +10%#A029D9
Darker −10%#611785
Darker −20%#411059
Darker −30%#22082E
Darker −40%#020003
More saturated +25%#8A05CA
Less saturated −25%#783996

Channel breakdown

R129
G31
B176
Red129 (50.6%)
Green31 (12.2%)
Blue176 (69%)
Hue280.55°
Saturation (HSL)70.05%
Lightness40.59%
Dominant channelBlue
Hex per channelR 81 · G 1F · B B0

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Every value on this page was computed from “811fb0” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.