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Recognised as Colour

#511DB5

  • #511DB5
  • Violet
  • Dark
  • Nearest: Dark blue

#511DB5 is a violet with RGB values 81, 29, 181 and HSL 261°, 72%, 41%. It is a dark colour, so white text on it reaches 9.6:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#511DB5#511DB5
HEX#511DB5
RGBrgb(81, 29, 181)
RGB (0–1)0.3176, 0.1137, 0.7098
RGB percentages31.8%, 11.4%, 71%
HSLhsl(260.5, 72.4%, 41.2%)
HSV / HSBhsv(260.5, 84%, 71%)
CMYK55.2%, 84%, 0%, 29%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,316,021
CSS custom property--colour: #511DB5;

Brightness & contrast

Relative luminance0.05964WCAG 2.x, 0 is black and 1 is white
Perceived brightness78.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.58:1
Contrast with white9.58:1WCAG normal text: AAA
Contrast with black2.19:1WCAG normal text: Fail
Greyscale equivalent#333333
Inverted#AEE24A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0048B9no red cones; affects about 1% of men; ΔE 30.1 from the original
Deuteranopia#0041B2no green cones; the most common form, about 1% of men; ΔE 27.9 from the original
Tritanopia#264C6Cno blue cones; rare, and affects men and women equally; ΔE 75.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.58:1WCAG large text: AAA
Contrast with black, large text2.19:1WCAG large text: Fail

Named colours

Dark blue · ΔE 15.9Blue violet · ΔE 19Dark orchid · ΔE 19.2Navy · ΔE 19.5Indigo · ΔE 19.5Dark violet · ΔE 22.2
Nearest named CSS colourDark blue (#00008B)ΔE 15.9, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#81B51D
Analogous#1D35B5, #9D1DB5
Triadic#B5511D, #1DB551
Split complementary#B59D1D, #35B51D
Tetradic#B51D35, #81B51D, #1DB59D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C4ACF2
Lighter +30%#A580EB
Lighter +20%#8554E4
Lighter +10%#6628DD
Darker −10%#3D1689
Darker −20%#2A0F5D
Darker −30%#160831
Darker −40%#020105
More saturated +25%#4903CF
Less saturated −25%#59379B

Channel breakdown

R81
G29
B181
Red81 (31.8%)
Green29 (11.4%)
Blue181 (71%)
Hue260.53°
Saturation (HSL)72.38%
Lightness41.18%
Dominant channelBlue
Hex per channelR 51 · G 1D · B B5

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Every value on this page was computed from “511db5” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.