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Recognised as Colour

#55439B

  • #55439B
  • Blue
  • Dark
  • Nearest: Dark slateblue

#55439B is a blue with RGB values 85, 67, 155 and HSL 252°, 40%, 44%. It is a dark colour, so white text on it reaches 7.9:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#55439B#55439B
HEX#55439B
RGBrgb(85, 67, 155)
RGB (0–1)0.3333, 0.2627, 0.6078
RGB percentages33.3%, 26.3%, 60.8%
HSLhsl(252.3, 39.6%, 43.5%)
HSV / HSBhsv(252.3, 56.8%, 60.8%)
CMYK45.2%, 56.8%, 0%, 39.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,587,867
CSS custom property--colour: #55439B;

Brightness & contrast

Relative luminance0.08312WCAG 2.x, 0 is black and 1 is white
Perceived brightness86.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.89:1
Contrast with white7.89:1WCAG normal text: AAA
Contrast with black2.66:1WCAG normal text: Fail
Greyscale equivalent#4D4D4D
Inverted#AABC64

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#11539Eno red cones; affects about 1% of men; ΔE 20.5 from the original
Deuteranopia#144F99no green cones; the most common form, about 1% of men; ΔE 19.6 from the original
Tritanopia#405668no blue cones; rare, and affects men and women equally; ΔE 46.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.89:1WCAG large text: AAA
Contrast with black, large text2.66:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 6.7Rebecca purple · ΔE 12.8Slate blue · ΔE 17.1Midnight blue · ΔE 19.2Medium purple · ΔE 21.8Royal blue · ΔE 24
Nearest named CSS colourDark slateblue (#483D8B)ΔE 6.73, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#899B43
Analogous#435D9B, #81439B
Triadic#9B5543, #439B55
Split complementary#9B8143, #5D9B43
Tetradic#9B435D, #899B43, #439B81

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CBC4E6
Lighter +30%#ACA1D6
Lighter +20%#8C7DC7
Lighter +10%#6D5AB7
Darker −10%#413477
Darker −20%#2E2454
Darker −30%#1A1530
Darker −40%#07050D
More saturated +25%#4527B7
Less saturated −25%#655F7F

Channel breakdown

R85
G67
B155
Red85 (33.3%)
Green67 (26.3%)
Blue155 (60.8%)
Hue252.27°
Saturation (HSL)39.64%
Lightness43.53%
Dominant channelBlue
Hex per channelR 55 · G 43 · B 9B

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Every value on this page was computed from “55439b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.