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Recognised as Colour

#550B72

  • #550B72
  • Violet
  • Dark
  • Nearest: Indigo

#550B72 is a violet with RGB values 85, 11, 114 and HSL 283°, 82%, 25%. It is a dark colour, so white text on it reaches 12.5:1 contrast (AAA for normal text). The nearest named colour is Indigo.

Colour values

#550B72#550B72
HEX#550B72
RGBrgb(85, 11, 114)
RGB (0–1)0.3333, 0.0431, 0.4471
RGB percentages33.3%, 4.3%, 44.7%
HSLhsl(283.1, 82.4%, 24.5%)
HSV / HSBhsv(283.1, 90.4%, 44.7%)
CMYK25.4%, 90.4%, 0%, 55.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,573,490
CSS custom property--colour: #550B72;

Brightness & contrast

Relative luminance0.03386WCAG 2.x, 0 is black and 1 is white
Perceived brightness60.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.52:1
Contrast with white12.52:1WCAG normal text: AAA
Contrast with black1.68:1WCAG normal text: Fail
Greyscale equivalent#222222
Inverted#AAF48D

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003075no red cones; affects about 1% of men; ΔE 31.2 from the original
Deuteranopia#003570no green cones; the most common form, about 1% of men; ΔE 37.1 from the original
Tritanopia#522842no blue cones; rare, and affects men and women equally; ΔE 41 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text12.52:1WCAG large text: AAA
Contrast with black, large text1.68:1WCAG large text: Fail

Named colours

Indigo · ΔE 13Rebecca purple · ΔE 13.4Purple · ΔE 15.4Midnight blue · ΔE 18.2Dark magenta · ΔE 19.4Dark slateblue · ΔE 22.8
Nearest named CSS colourIndigo (#4B0082)ΔE 13, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#28720B
Analogous#210B72, #720B5C
Triadic#72550B, #0B7255
Split complementary#5C720B, #0B7221
Tetradic#72210B, #28720B, #0B5C72

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C55AEF
Lighter +30%#B52BEB
Lighter +20%#9A14CF
Lighter +10%#780FA1
Darker −10%#320743
Darker −20%#100215
Darker −30%#000000
Darker −40%#000000
More saturated +25%#5A007D
Less saturated −25%#4E1B62

Channel breakdown

R85
G11
B114
Red85 (33.3%)
Green11 (4.3%)
Blue114 (44.7%)
Hue283.11°
Saturation (HSL)82.4%
Lightness24.51%
Dominant channelBlue
Hex per channelR 55 · G 0B · B 72

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Every value on this page was computed from “550b72” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.