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Colour

#581B69

  • #581B69
  • Violet
  • Dark
  • Nearest: Rebecca purple

#581B69 is a violet with RGB values 88, 27, 105 and HSL 287°, 59%, 26%. It is a dark colour, so white text on it reaches 11.8:1 contrast (AAA for normal text). The nearest named colour is Rebecca purple.

Colour values

#581B69#581B69
HEX#581B69
RGBrgb(88, 27, 105)
RGB (0–1)0.3451, 0.1059, 0.4118
RGB percentages34.5%, 10.6%, 41.2%
HSLhsl(286.9, 59.1%, 25.9%)
HSV / HSBhsv(286.9, 74.3%, 41.2%)
CMYK16.2%, 74.3%, 0%, 58.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,774,185
CSS custom property--colour: #581B69;

Brightness & contrast

Relative luminance0.03878WCAG 2.x, 0 is black and 1 is white
Perceived brightness63.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.83:1
Contrast with white11.83:1WCAG normal text: AAA
Contrast with black1.78:1WCAG normal text: Fail
Greyscale equivalent#2E2E2E
Inverted#A7E496

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00346Bno red cones; affects about 1% of men; ΔE 31.9 from the original
Deuteranopia#1E3967no green cones; the most common form, about 1% of men; ΔE 33.5 from the original
Tritanopia#572A40no blue cones; rare, and affects men and women equally; ΔE 32.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text11.83:1WCAG large text: AAA
Contrast with black, large text1.78:1WCAG large text: Fail

Named colours

Rebecca purple · ΔE 17.7Dark slateblue · ΔE 18.5Midnight blue · ΔE 20.3Purple · ΔE 20.4Indigo · ΔE 23.9Dark magenta · ΔE 25.2
Nearest named CSS colourRebecca purple (#663399)ΔE 17.67, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#2C691B
Analogous#311B69, #691B53
Triadic#69581B, #1B6958
Split complementary#53691B, #1B6931
Tetradic#69311B, #2C691B, #1B5369

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C575DB
Lighter +30%#B44CD1
Lighter +20%#9C30BA
Lighter +10%#7A2592
Darker −10%#361140
Darker −20%#140618
Darker −30%#000000
Darker −40%#000000
More saturated +25%#610A7A
Less saturated −25%#4F2B59

Channel breakdown

R88
G27
B105
Red88 (34.5%)
Green27 (10.6%)
Blue105 (41.2%)
Hue286.92°
Saturation (HSL)59.09%
Lightness25.88%
Dominant channelBlue
Hex per channelR 58 · G 1B · B 69

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Every value on this page was computed from “581b69” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.