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Recognised as Colour

#581FBB

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

#581FBB is a violet with RGB values 88, 31, 187 and HSL 262°, 72%, 43%. It is a dark colour, so white text on it reaches 9:1 contrast (AAA for normal text). The nearest named colour is Blue violet.

Colour values

#581FBB#581FBB
HEX#581FBB
RGBrgb(88, 31, 187)
RGB (0–1)0.3451, 0.1216, 0.7333
RGB percentages34.5%, 12.2%, 73.3%
HSLhsl(261.9, 71.6%, 42.7%)
HSV / HSBhsv(261.9, 83.4%, 73.3%)
CMYK52.9%, 83.4%, 0%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,775,291
CSS custom property--colour: #581FBB;

Brightness & contrast

Relative luminance0.06643WCAG 2.x, 0 is black and 1 is white
Perceived brightness82.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.02:1
Contrast with white9.02:1WCAG normal text: AAA
Contrast with black2.33:1WCAG normal text: Fail
Greyscale equivalent#363636
Inverted#A7E044

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004BBFno red cones; affects about 1% of men; ΔE 31.1 from the original
Deuteranopia#0045B8no green cones; the most common form, about 1% of men; ΔE 29.7 from the original
Tritanopia#334F70no blue cones; rare, and affects men and women equally; ΔE 76 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.02:1WCAG large text: AAA
Contrast with black, large text2.33:1WCAG large text: Fail

Named colours

Blue violet · ΔE 16.6Dark orchid · ΔE 17.8Dark blue · ΔE 18.1Dark violet · ΔE 20Indigo · ΔE 21.4Navy · ΔE 21.8
Nearest named CSS colourBlue violet (#8A2BE2)ΔE 16.6, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#82BB1F
Analogous#1F34BB, #A61FBB
Triadic#BB581F, #1FBB58
Split complementary#BBA61F, #34BB1F
Tetradic#BB1F34, #82BB1F, #1FBBA6

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CBB4F2
Lighter +30%#AC88EB
Lighter +20%#8E5CE4
Lighter +10%#6F30DD
Darker −10%#43188F
Darker −20%#2F1064
Darker −30%#1A0938
Darker −40%#06020C
More saturated +25%#5104D6
Less saturated −25%#5F3AA0

Channel breakdown

R88
G31
B187
Red88 (34.5%)
Green31 (12.2%)
Blue187 (73.3%)
Hue261.92°
Saturation (HSL)71.56%
Lightness42.75%
Dominant channelBlue
Hex per channelR 58 · G 1F · B BB

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