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Recognised as Colour

#A66ACE

  • #A66ACE
  • Violet
  • Dark
  • Nearest: Medium purple

#A66ACE is a violet with RGB values 166, 106, 206 and HSL 276°, 51%, 61%. It is a dark colour, so black text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Medium purple.

Colour values

#A66ACE#A66ACE
HEX#A66ACE
RGBrgb(166, 106, 206)
RGB (0–1)0.651, 0.4157, 0.8078
RGB percentages65.1%, 41.6%, 80.8%
HSLhsl(276, 50.5%, 61.2%)
HSV / HSBhsv(276, 48.5%, 80.8%)
CMYK19.4%, 48.5%, 0%, 19.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer10,906,318
CSS custom property--colour: #A66ACE;

Brightness & contrast

Relative luminance0.22871WCAG 2.x, 0 is black and 1 is white
Perceived brightness140.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.57:1
Contrast with white3.77:1WCAG normal text: Fail
Contrast with black5.57:1WCAG normal text: AA
Greyscale equivalent#7E7E7E
Inverted#599531

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5281D1no red cones; affects about 1% of men; ΔE 33.8 from the original
Deuteranopia#6285CBno green cones; the most common form, about 1% of men; ΔE 34.7 from the original
Tritanopia#A17A92no blue cones; rare, and affects men and women equally; ΔE 42.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.77:1WCAG large text: AA
Contrast with black, large text5.57:1WCAG large text: AAA

Named colours

Medium purple · ΔE 9.1Orchid · ΔE 17.4Medium orchid · ΔE 17.6Slate blue · ΔE 18.9Violet · ΔE 21.3Rebecca purple · ΔE 22.5
Nearest named CSS colourMedium purple (#9370DB)ΔE 9.14, clearly different but related
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#92CE6A
Analogous#746ACE, #CE6AC4
Triadic#CEA66A, #6ACEA6
Split complementary#C4CE6A, #6ACE74
Tetradic#CE746A, #92CE6A, #6AC4CE

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#EBDDF4
Lighter +20%#D4B7E7
Lighter +10%#BD90DB
Darker −10%#8F44C1
Darker −20%#74349E
Darker −30%#582778
Darker −40%#3B1B51
More saturated +25%#AB51E7
Less saturated −25%#A183B5

Channel breakdown

R166
G106
B206
Red166 (65.1%)
Green106 (41.6%)
Blue206 (80.8%)
Hue276°
Saturation (HSL)50.51%
Lightness61.18%
Dominant channelBlue
Hex per channelR A6 · G 6A · B CE

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Every value on this page was computed from “a66ace” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.