Colour

#81578C

#81578C
Violet
Dark
Nearest: Dark slateblue

#81578C is a violet with RGB values 129, 87, 140 and HSL 288°, 23%, 45%. It is a dark colour, so white text on it reaches 5.7:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#81578C#81578C

HEX#81578C

RGBrgb(129, 87, 140)

RGB (0–1)0.5059, 0.3412, 0.549

RGB percentages50.6%, 34.1%, 54.9%

HSLhsl(287.5, 23.3%, 44.5%)

HSV / HSBhsv(287.5, 37.9%, 54.9%)

CMYK7.9%, 37.9%, 0%, 45.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer8,476,556

CSS custom property--colour: #81578C;

Brightness & contrast

Relative luminance0.13377WCAG 2.x, 0 is black and 1 is white

Perceived brightness107.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.71:1

Contrast with white5.71:1WCAG normal text: AA

Contrast with black3.68:1WCAG normal text: Fail

Greyscale equivalent#646464

Inverted#7EA873

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#50638Eno red cones; affects about 1% of men; ΔE 22.6 from the original

Deuteranopia#5A688Ano green cones; the most common form, about 1% of men; ΔE 23.7 from the original

Tritanopia#825D6Bno blue cones; rare, and affects men and women equally; ΔE 22.8 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text5.71:1WCAG large text: AAA

Contrast with black, large text3.68:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 23.2 Plum · ΔE 30.5 Rebecca purple · ΔE 31 Medium purple · ΔE 31.4 Slate grey · ΔE 33 Steel blue · ΔE 33.9

Nearest named CSS colourDark slateblue (#483D8B)ΔE 23.21, a distinctly different colour

Hue familyviolet

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#628C57

Analogous#66578C, #8C577D

Triadic#8C8157, #578C81

Split complementary#7D8C57, #578C66

Tetradic#8C6657, #628C57, #577D8C

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#DDCEE1

Lighter +30%#C7AFCD

Lighter +20%#B18FBA

Lighter +10%#9B70A6

Darker −10%#64436D

Darker −20%#47304D

Darker −30%#2A1C2E

Darker −40%#0D090E

More saturated +25%#923BA8

Less saturated −25%#727272

Channel breakdown

R129

G87

B140

Red129 (50.6%)

Green87 (34.1%)

Blue140 (54.9%)

Hue287.55°

Saturation (HSL)23.35%

Lightness44.51%

Dominant channelBlue

Hex per channelR 81 · G 57 · B 8C

Keep nerding

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#81578C

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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