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Recognised as Colour

#591B8A

  • #591B8A
  • Violet
  • Dark
  • Nearest: Indigo

#591B8A is a violet with RGB values 89, 27, 138 and HSL 274°, 67%, 32%. It is a dark colour, so white text on it reaches 10.8:1 contrast (AAA for normal text). The nearest named colour is Indigo.

Colour values

#591B8A#591B8A
HEX#591B8A
RGBrgb(89, 27, 138)
RGB (0–1)0.349, 0.1059, 0.5412
RGB percentages34.9%, 10.6%, 54.1%
HSLhsl(273.5, 67.3%, 32.4%)
HSV / HSBhsv(273.5, 80.4%, 54.1%)
CMYK35.5%, 80.4%, 0%, 45.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,839,754
CSS custom property--colour: #591B8A;

Brightness & contrast

Relative luminance0.04743WCAG 2.x, 0 is black and 1 is white
Perceived brightness70.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.78:1
Contrast with white10.78:1WCAG normal text: AAA
Contrast with black1.95:1WCAG normal text: Fail
Greyscale equivalent#303030
Inverted#A6E475

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003C8Dno red cones; affects about 1% of men; ΔE 30.2 from the original
Deuteranopia#003D88no green cones; the most common form, about 1% of men; ΔE 33.2 from the original
Tritanopia#4F3852no blue cones; rare, and affects men and women equally; ΔE 49.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.78:1WCAG large text: AAA
Contrast with black, large text1.95:1WCAG large text: Fail

Named colours

Indigo · ΔE 7.9Rebecca purple · ΔE 8.7Purple · ΔE 17.4Midnight blue · ΔE 19Dark magenta · ΔE 19.3Navy · ΔE 20.2
Nearest named CSS colourIndigo (#4B0082)ΔE 7.93, clearly different but related
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#4C8A1B
Analogous#221B8A, #8A1B83
Triadic#8A591B, #1B8A59
Split complementary#848A1B, #1B8A21
Tetradic#8A211B, #4C8A1B, #1B838A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BE89E8
Lighter +30%#A75EE0
Lighter +20%#8F34D7
Lighter +10%#7523B5
Darker −10%#3D135F
Darker −20%#220A35
Darker −30%#06020A
Darker −40%#000000
More saturated +25%#5B069F
Less saturated −25%#573075

Channel breakdown

R89
G27
B138
Red89 (34.9%)
Green27 (10.6%)
Blue138 (54.1%)
Hue273.51°
Saturation (HSL)67.27%
Lightness32.35%
Dominant channelBlue
Hex per channelR 59 · G 1B · B 8A

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Every value on this page was computed from “591b8a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.