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Colour

#57308C

  • #57308C
  • Violet
  • Dark
  • Nearest: Rebecca purple

#57308C is a violet with RGB values 87, 48, 140 and HSL 265°, 49%, 37%. It is a dark colour, so white text on it reaches 9.5:1 contrast (AAA for normal text). The nearest named colour is Rebecca purple.

Colour values

#57308C#57308C
HEX#57308C
RGBrgb(87, 48, 140)
RGB (0–1)0.3412, 0.1882, 0.549
RGB percentages34.1%, 18.8%, 54.9%
HSLhsl(265.4, 48.9%, 36.9%)
HSV / HSBhsv(265.4, 65.7%, 54.9%)
CMYK37.9%, 65.7%, 0%, 45.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,714,060
CSS custom property--colour: #57308C;

Brightness & contrast

Relative luminance0.06034WCAG 2.x, 0 is black and 1 is white
Perceived brightness76.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.52:1
Contrast with white9.52:1WCAG normal text: AAA
Contrast with black2.21:1WCAG normal text: Fail
Greyscale equivalent#3F3F3F
Inverted#A8CF73

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00458Fno red cones; affects about 1% of men; ΔE 25.6 from the original
Deuteranopia#02458Ano green cones; the most common form, about 1% of men; ΔE 27.7 from the original
Tritanopia#4B4559no blue cones; rare, and affects men and women equally; ΔE 45.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.52:1WCAG large text: AAA
Contrast with black, large text2.21:1WCAG large text: Fail

Named colours

Rebecca purple · ΔE 6.6Dark slateblue · ΔE 12Midnight blue · ΔE 15.7Indigo · ΔE 18.7Slate blue · ΔE 20.6Purple · ΔE 22.8
Nearest named CSS colourRebecca purple (#663399)ΔE 6.63, clearly different but related
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#658C30
Analogous#30378C, #85308C
Triadic#8C5730, #308C57
Split complementary#8C8530, #378C30
Tetradic#8C3037, #658C30, #308C85

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C0A7E1
Lighter +30%#A481D4
Lighter +20%#895BC7
Lighter +10%#6F3DB2
Darker −10%#3F2366
Darker −20%#281640
Darker −30%#10091A
Darker −40%#000000
More saturated +25%#5318A4
Less saturated −25%#5B4875

Channel breakdown

R87
G48
B140
Red87 (34.1%)
Green48 (18.8%)
Blue140 (54.9%)
Hue265.43°
Saturation (HSL)48.94%
Lightness36.86%
Dominant channelBlue
Hex per channelR 57 · G 30 · B 8C

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Every value on this page was computed from “57308c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.