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Recognised as Colour

#8100AC

  • #8100AC
  • Violet
  • Dark
  • Nearest: Dark orchid

#8100AC is a violet with RGB values 129, 0, 172 and HSL 285°, 100%, 34%. It is a dark colour, so white text on it reaches 8.3:1 contrast (AAA for normal text). The nearest named colour is Dark orchid.

Colour values

#8100AC#8100AC
HEX#8100AC
RGBrgb(129, 0, 172)
RGB (0–1)0.5059, 0, 0.6745
RGB percentages50.6%, 0%, 67.5%
HSLhsl(285, 100%, 33.7%)
HSV / HSBhsv(285, 100%, 67.5%)
CMYK25%, 100%, 0%, 32.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,454,316
CSS custom property--colour: #8100AC;

Brightness & contrast

Relative luminance0.07646WCAG 2.x, 0 is black and 1 is white
Perceived brightness91.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.3:1
Contrast with white8.3:1WCAG normal text: AAA
Contrast with black2.53:1WCAG normal text: Fail
Greyscale equivalent#282828
Inverted#7EFF53

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0049B0no red cones; affects about 1% of men; ΔE 43.5 from the original
Deuteranopia#0050A9no green cones; the most common form, about 1% of men; ΔE 51.4 from the original
Tritanopia#7C3B64no blue cones; rare, and affects men and women equally; ΔE 57.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.3:1WCAG large text: AAA
Contrast with black, large text2.53:1WCAG large text: Fail

Named colours

Dark orchid · ΔE 10.5Dark violet · ΔE 17Blue violet · ΔE 19.3Dark magenta · ΔE 19.6Indigo · ΔE 20.2Purple · ΔE 23
Nearest named CSS colourDark orchid (#9932CC)ΔE 10.49, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#2BAC00
Analogous#2B00AC, #AC0081
Triadic#AC8100, #00AC81
Split complementary#81AC00, #00AC2B
Tetradic#AC2B00, #2BAC00, #0081AC

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DE79FF
Lighter +30%#D146FF
Lighter +20%#C413FF
Lighter +10%#A700DF
Darker −10%#5B0079
Darker −20%#350046
Darker −30%#0E0013
Darker −40%#000000
More saturated +25%#8100AC
Less saturated −25%#761697

Channel breakdown

R129
G0
B172
Red129 (50.6%)
Green0 (0%)
Blue172 (67.5%)
Hue285°
Saturation (HSL)100%
Lightness33.73%
Dominant channelBlue
Hex per channelR 81 · G 00 · B AC

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Every value on this page was computed from “8100ac” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.