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Recognised as Colour

#511B73

  • #511B73
  • Violet
  • Dark
  • Nearest: Rebecca purple

#511B73 is a violet with RGB values 81, 27, 115 and HSL 277°, 62%, 28%. It is a dark colour, so white text on it reaches 12:1 contrast (AAA for normal text). The nearest named colour is Rebecca purple.

Colour values

#511B73#511B73
HEX#511B73
RGBrgb(81, 27, 115)
RGB (0–1)0.3176, 0.1059, 0.451
RGB percentages31.8%, 10.6%, 45.1%
HSLhsl(276.8, 62%, 27.8%)
HSV / HSBhsv(276.8, 76.5%, 45.1%)
CMYK29.6%, 76.5%, 0%, 54.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,315,443
CSS custom property--colour: #511B73;

Brightness & contrast

Relative luminance0.03771WCAG 2.x, 0 is black and 1 is white
Perceived brightness62.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.97:1
Contrast with white11.97:1WCAG normal text: AAA
Contrast with black1.75:1WCAG normal text: Fail
Greyscale equivalent#2D2D2D
Inverted#AEE48C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003575no red cones; affects about 1% of men; ΔE 28.6 from the original
Deuteranopia#023771no green cones; the most common form, about 1% of men; ΔE 31.7 from the original
Tritanopia#4C3045no blue cones; rare, and affects men and women equally; ΔE 40 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text11.97:1WCAG large text: AAA
Contrast with black, large text1.75:1WCAG large text: Fail

Named colours

Rebecca purple · ΔE 12.6Midnight blue · ΔE 15.1Dark slateblue · ΔE 16.8Indigo · ΔE 17.6Purple · ΔE 19.8Dark magenta · ΔE 23.9
Nearest named CSS colourRebecca purple (#663399)ΔE 12.64, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#3D731B
Analogous#251B73, #731B69
Triadic#73511B, #1B7351
Split complementary#69731B, #1B7325
Tetradic#73251B, #3D731B, #1B6973

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B97AE0
Lighter +30%#A351D6
Lighter +20%#8B2EC6
Lighter +10%#6E259C
Darker −10%#34114A
Darker −20%#170820
Darker −30%#000000
Darker −40%#000000
More saturated +25%#550985
Less saturated −25%#4D2D61

Channel breakdown

R81
G27
B115
Red81 (31.8%)
Green27 (10.6%)
Blue115 (45.1%)
Hue276.82°
Saturation (HSL)61.97%
Lightness27.84%
Dominant channelBlue
Hex per channelR 51 · G 1B · B 73

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Every value on this page was computed from “511b73” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.