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Recognised as Colour

#55588F

  • #55588F
  • Blue
  • Dark
  • Nearest: Dark slateblue

#55588F is a blue with RGB values 85, 88, 143 and HSL 237°, 25%, 45%. It is a dark colour, so white text on it reaches 6.6:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#55588F#55588F
HEX#55588F
RGBrgb(85, 88, 143)
RGB (0–1)0.3333, 0.3451, 0.5608
RGB percentages33.3%, 34.5%, 56.1%
HSLhsl(236.9, 25.4%, 44.7%)
HSV / HSBhsv(236.9, 40.6%, 56.1%)
CMYK40.6%, 38.5%, 0%, 43.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,593,231
CSS custom property--colour: #55588F;

Brightness & contrast

Relative luminance0.10894WCAG 2.x, 0 is black and 1 is white
Perceived brightness95.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.61:1
Contrast with white6.61:1WCAG normal text: AA
Contrast with black3.18:1WCAG normal text: Fail
Greyscale equivalent#5B5B5B
Inverted#AAA770

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#455F91no red cones; affects about 1% of men; ΔE 8.1 from the original
Deuteranopia#425B8Eno green cones; the most common form, about 1% of men; ΔE 7.3 from the original
Tritanopia#44636Cno blue cones; rare, and affects men and women equally; ΔE 31.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.61:1WCAG large text: AAA
Contrast with black, large text3.18:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 19Steel blue · ΔE 21.8Slate grey · ΔE 28.8Cornflower blue · ΔE 29.4Light slate grey · ΔE 30.1Dim grey · ΔE 34
Nearest named CSS colourDark slateblue (#483D8B)ΔE 19.01, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8F8C55
Analogous#55758F, #6F558F
Triadic#8F5558, #588F55
Split complementary#8F6F55, #758F55
Tetradic#8F5575, #8F8C55, #558F6F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CECFE2
Lighter +30%#AEB0CF
Lighter +20%#8E90BC
Lighter +10%#6E71A9
Darker −10%#42446F
Darker −20%#2F314F
Darker −30%#1C1D2F
Darker −40%#09090F
More saturated +25%#393EAB
Less saturated −25%#717272

Channel breakdown

R85
G88
B143
Red85 (33.3%)
Green88 (34.5%)
Blue143 (56.1%)
Hue236.9°
Saturation (HSL)25.44%
Lightness44.71%
Dominant channelBlue
Hex per channelR 55 · G 58 · B 8F

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Every value on this page was computed from “55588f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.