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Recognised as Colour

#8157AA

  • #8157AA
  • Violet
  • Dark
  • Nearest: Medium purple

#8157AA is a violet with RGB values 129, 87, 170 and HSL 270°, 33%, 50%. It is a dark colour, so white text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Medium purple.

Colour values

#8157AA#8157AA
HEX#8157AA
RGBrgb(129, 87, 170)
RGB (0–1)0.5059, 0.3412, 0.6667
RGB percentages50.6%, 34.1%, 66.7%
HSLhsl(270.4, 32.8%, 50.4%)
HSV / HSBhsv(270.4, 48.8%, 66.7%)
CMYK24.1%, 48.8%, 0%, 33.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,476,586
CSS custom property--colour: #8157AA;

Brightness & contrast

Relative luminance0.14386WCAG 2.x, 0 is black and 1 is white
Perceived brightness112.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.42:1
Contrast with white5.42:1WCAG normal text: AA
Contrast with black3.88:1WCAG normal text: Fail
Greyscale equivalent#666666
Inverted#7EA855

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4069ADno red cones; affects about 1% of men; ΔE 26.6 from the original
Deuteranopia#4B6AA8no green cones; the most common form, about 1% of men; ΔE 26.6 from the original
Tritanopia#7B6578no blue cones; rare, and affects men and women equally; ΔE 37.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text5.42:1WCAG large text: AAA
Contrast with black, large text3.88:1WCAG large text: AA

Named colours

Medium purple · ΔE 15.9Dark slateblue · ΔE 16.5Rebecca purple · ΔE 17.4Slate blue · ΔE 19.7Orchid · ΔE 28.1Medium orchid · ΔE 28.2
Nearest named CSS colourMedium purple (#9370DB)ΔE 15.94, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#80AA57
Analogous#5757AA, #AA57AA
Triadic#AA8157, #57AA81
Split complementary#AAAA57, #57AA58
Tetradic#AA5757, #80AA57, #57AAAA

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E7DEEF
Lighter +30%#CDBDDD
Lighter +20%#B49BCC
Lighter +10%#9A79BB
Darker −10%#674589
Darker −20%#4E3467
Darker −30%#342345
Darker −40%#1B1223
More saturated +25%#8137CA
Less saturated −25%#81778A

Channel breakdown

R129
G87
B170
Red129 (50.6%)
Green87 (34.1%)
Blue170 (66.7%)
Hue270.36°
Saturation (HSL)32.81%
Lightness50.39%
Dominant channelBlue
Hex per channelR 81 · G 57 · B AA

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Every value on this page was computed from “8157aa” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.