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Recognised as Colour

#581AB9

  • #581AB9
  • Violet
  • Dark
  • Nearest: Blue violet

#581AB9 is a violet with RGB values 88, 26, 185 and HSL 263°, 75%, 41%. It is a dark colour, so white text on it reaches 9.3:1 contrast (AAA for normal text). The nearest named colour is Blue violet.

Colour values

#581AB9#581AB9
HEX#581AB9
RGBrgb(88, 26, 185)
RGB (0–1)0.3451, 0.102, 0.7255
RGB percentages34.5%, 10.2%, 72.5%
HSLhsl(263.4, 75.4%, 41.4%)
HSV / HSBhsv(263.4, 85.9%, 72.5%)
CMYK52.4%, 85.9%, 0%, 27.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,774,009
CSS custom property--colour: #581AB9;

Brightness & contrast

Relative luminance0.06316WCAG 2.x, 0 is black and 1 is white
Perceived brightness81.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.28:1
Contrast with white9.28:1WCAG normal text: AAA
Contrast with black2.26:1WCAG normal text: Fail
Greyscale equivalent#333333
Inverted#A7E546

Colour vision & accessibility

Protanopia#0049BDno red cones; affects about 1% of men; ΔE 31.8 from the original
Deuteranopia#0044B6no green cones; the most common form, about 1% of men; ΔE 31.2 from the original
Tritanopia#354D6Eno blue cones; rare, and affects men and women equally; ΔE 76.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.28:1WCAG large text: AAA
Contrast with black, large text2.26:1WCAG large text: Fail

Named colours

Nearest named CSS colourBlue violet (#8A2BE2)ΔE 16.33, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

Complementary#7BB91A
Analogous#1A2BB9, #A81AB9
Triadic#B9581A, #1AB958
Split complementary#B9A81A, #2BB91A
Tetradic#B91A2B, #7BB91A, #1AB9A8

Tints, shades & saturation

Lighter +40%#C8ACF3
Lighter +30%#AA7FED
Lighter +20%#8C52E7
Lighter +10%#6E26E0
Darker −10%#43148C
Darker −20%#2D0D60
Darker −30%#180733
Darker −40%#030106
More saturated +25%#5200D3
Less saturated −25%#5E349F

Channel breakdown

R88
G26
B185
Red88 (34.5%)
Green26 (10.2%)
Blue185 (72.5%)
Hue263.4°
Saturation (HSL)75.36%
Lightness41.37%
Dominant channelBlue
Hex per channelR 58 · G 1A · B B9

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Every value on this page was computed from “581ab9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.