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Recognised as Colour

#55558E

  • #55558E
  • Blue
  • Dark
  • Nearest: Dark slateblue

#55558E is a blue with RGB values 85, 85, 142 and HSL 240°, 25%, 45%. It is a dark colour, so white text on it reaches 6.8:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#55558E#55558E
HEX#55558E
RGBrgb(85, 85, 142)
RGB (0–1)0.3333, 0.3333, 0.5569
RGB percentages33.3%, 33.3%, 55.7%
HSLhsl(240, 25.1%, 44.5%)
HSV / HSBhsv(240, 40.1%, 55.7%)
CMYK40.1%, 40.1%, 0%, 44.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,592,462
CSS custom property--colour: #55558E;

Brightness & contrast

Relative luminance0.10381WCAG 2.x, 0 is black and 1 is white
Perceived brightness93.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.83:1
Contrast with white6.83:1WCAG normal text: AA
Contrast with black3.08:1WCAG normal text: Fail
Greyscale equivalent#595959
Inverted#AAAA71

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#425D90no red cones; affects about 1% of men; ΔE 9.5 from the original
Deuteranopia#3F598Dno green cones; the most common form, about 1% of men; ΔE 8.7 from the original
Tritanopia#45606Ano blue cones; rare, and affects men and women equally; ΔE 31.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.83:1WCAG large text: AAA
Contrast with black, large text3.08:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 17.1Steel blue · ΔE 23.6Cornflower blue · ΔE 29.9Slate grey · ΔE 30.7Light slate grey · ΔE 31.9Rebecca purple · ΔE 32.4
Nearest named CSS colourDark slateblue (#483D8B)ΔE 17.08, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8E8E55
Analogous#55728E, #72558E
Triadic#8E5555, #558E55
Split complementary#8E7255, #728E55
Tetradic#8E5572, #8E8E55, #558E72

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CECEE1
Lighter +30%#AEAECE
Lighter +20%#8E8EBB
Lighter +10%#6E6EA8
Darker −10%#42426E
Darker −20%#2F2F4E
Darker −30%#1C1C2E
Darker −40%#09090E
More saturated +25%#3939AA
Less saturated −25%#717172

Channel breakdown

R85
G85
B142
Red85 (33.3%)
Green85 (33.3%)
Blue142 (55.7%)
Hue240°
Saturation (HSL)25.11%
Lightness44.51%
Dominant channelBlue
Hex per channelR 55 · G 55 · B 8E

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Every value on this page was computed from “55558e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.