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Recognised as Colour

#A657D0

  • #A657D0
  • Violet
  • Dark
  • Nearest: Medium orchid

#A657D0 is a violet with RGB values 166, 87, 208 and HSL 279°, 56%, 58%. It is a dark colour, so black text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Medium orchid.

Colour values

#A657D0#A657D0
HEX#A657D0
RGBrgb(166, 87, 208)
RGB (0–1)0.651, 0.3412, 0.8157
RGB percentages65.1%, 34.1%, 81.6%
HSLhsl(279.2, 56.3%, 57.8%)
HSV / HSBhsv(279.2, 58.2%, 81.6%)
CMYK20.2%, 58.2%, 0%, 18.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer10,901,456
CSS custom property--colour: #A657D0;

Brightness & contrast

Relative luminance0.19477WCAG 2.x, 0 is black and 1 is white
Perceived brightness132.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.9:1
Contrast with white4.29:1WCAG normal text: Fail
Contrast with black4.9:1WCAG normal text: AA
Greyscale equivalent#717171
Inverted#59A82F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3076D4no red cones; affects about 1% of men; ΔE 41.6 from the original
Deuteranopia#4F7CCDno green cones; the most common form, about 1% of men; ΔE 43 from the original
Tritanopia#A16D8Bno blue cones; rare, and affects men and women equally; ΔE 49.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.29:1WCAG large text: AA
Contrast with black, large text4.9:1WCAG large text: AAA

Named colours

Medium orchid · ΔE 7.3Medium purple · ΔE 16.2Dark orchid · ΔE 18.2Slate blue · ΔE 19.3Orchid · ΔE 19.3Medium slateblue · ΔE 19.5
Nearest named CSS colourMedium orchid (#BA55D3)ΔE 7.31, clearly different but related
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#81D057
Analogous#6A57D0, #D057BD
Triadic#D0A657, #57D0A6
Split complementary#BDD057, #57D06A
Tetradic#D06A57, #81D057, #57BDD0

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FAF6FD
Lighter +30%#E5CFF1
Lighter +20%#D0A7E6
Lighter +10%#BB7FDB
Darker −10%#8F35BF
Darker −20%#712A97
Darker −30%#531F6F
Darker −40%#351447
More saturated +25%#AE3CEB
Less saturated −25%#9E72B5

Channel breakdown

R166
G87
B208
Red166 (65.1%)
Green87 (34.1%)
Blue208 (81.6%)
Hue279.17°
Saturation (HSL)56.28%
Lightness57.84%
Dominant channelBlue
Hex per channelR A6 · G 57 · B D0

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Every value on this page was computed from “a657d0” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.