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Recognised as Colour

#551F73

  • #551F73
  • Violet
  • Dark
  • Nearest: Rebecca purple

#551F73 is a violet with RGB values 85, 31, 115 and HSL 279°, 58%, 29%. It is a dark colour, so white text on it reaches 11.5:1 contrast (AAA for normal text). The nearest named colour is Rebecca purple.

Colour values

#551F73#551F73
HEX#551F73
RGBrgb(85, 31, 115)
RGB (0–1)0.3333, 0.1216, 0.451
RGB percentages33.3%, 12.2%, 45.1%
HSLhsl(278.6, 57.5%, 28.6%)
HSV / HSBhsv(278.6, 73%, 45.1%)
CMYK26.1%, 73%, 0%, 54.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,578,611
CSS custom property--colour: #551F73;

Brightness & contrast

Relative luminance0.04149WCAG 2.x, 0 is black and 1 is white
Perceived brightness65.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.48:1
Contrast with white11.48:1WCAG normal text: AAA
Contrast with black1.83:1WCAG normal text: Fail
Greyscale equivalent#313131
Inverted#AAE08C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003775no red cones; affects about 1% of men; ΔE 29.2 from the original
Deuteranopia#123A71no green cones; the most common form, about 1% of men; ΔE 31.5 from the original
Tritanopia#513146no blue cones; rare, and affects men and women equally; ΔE 37.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text11.48:1WCAG large text: AAA
Contrast with black, large text1.83:1WCAG large text: Fail

Named colours

Rebecca purple · ΔE 13.3Dark slateblue · ΔE 15.8Midnight blue · ΔE 16.6Indigo · ΔE 20Purple · ΔE 20Dark magenta · ΔE 24.4
Nearest named CSS colourRebecca purple (#663399)ΔE 13.28, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#3D731F
Analogous#2B1F73, #731F67
Triadic#73551F, #1F7355
Split complementary#67731F, #1F732B
Tetradic#732B1F, #3D731F, #1F6773

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BC81DD
Lighter +30%#A759D2
Lighter +20%#9035C3
Lighter +10%#732A9B
Darker −10%#37144B
Darker −20%#1A0923
Darker −30%#000000
Darker −40%#000000
More saturated +25%#5A0D85
Less saturated −25%#503161

Channel breakdown

R85
G31
B115
Red85 (33.3%)
Green31 (12.2%)
Blue115 (45.1%)
Hue278.57°
Saturation (HSL)57.53%
Lightness28.63%
Dominant channelBlue
Hex per channelR 55 · G 1F · B 73

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Every value on this page was computed from “551f73” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.