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Recognised as Colour

#555D82

  • #555D82
  • Blue
  • Dark
  • Nearest: Slate grey

#555D82 is a blue with RGB values 85, 93, 130 and HSL 229°, 21%, 42%. It is a dark colour, so white text on it reaches 6.4:1 contrast (AA for normal text). The nearest named colour is Slate grey.

Colour values

#555D82#555D82
HEX#555D82
RGBrgb(85, 93, 130)
RGB (0–1)0.3333, 0.3647, 0.5098
RGB percentages33.3%, 36.5%, 51%
HSLhsl(229.3, 20.9%, 42.2%)
HSV / HSBhsv(229.3, 34.6%, 51%)
CMYK34.6%, 28.5%, 0%, 49%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,594,498
CSS custom property--colour: #555D82;

Brightness & contrast

Relative luminance0.11372WCAG 2.x, 0 is black and 1 is white
Perceived brightness95.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.41:1
Contrast with white6.41:1WCAG normal text: AA
Contrast with black3.27:1WCAG normal text: Fail
Greyscale equivalent#5E5E5E
Inverted#AAA27D

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#516184no red cones; affects about 1% of men; ΔE 3.3 from the original
Deuteranopia#4E5D81no green cones; the most common form, about 1% of men; ΔE 2.5 from the original
Tritanopia#49646Ano blue cones; rare, and affects men and women equally; ΔE 21.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.41:1WCAG large text: AAA
Contrast with black, large text3.27:1WCAG large text: AA

Named colours

Slate grey · ΔE 18.9Steel blue · ΔE 19.3Light slate grey · ΔE 20.8Dim grey · ΔE 23Gray · ΔE 26.3Dark slate grey · ΔE 27
Nearest named CSS colourSlate grey (#708090)ΔE 18.88, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#827A55
Analogous#557382, #645582
Triadic#82555D, #5D8255
Split complementary#826455, #738255
Tetradic#825573, #827A55, #558264

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C8CBDB
Lighter +30%#A9AEC7
Lighter +20%#8A91B3
Lighter +10%#6B759F
Darker −10%#414763
Darker −20%#2D3144
Darker −30%#191B25
Darker −40%#040507
More saturated +25%#3A4C9D
Less saturated −25%#6B6B6B

Channel breakdown

R85
G93
B130
Red85 (33.3%)
Green93 (36.5%)
Blue130 (51%)
Hue229.33°
Saturation (HSL)20.93%
Lightness42.16%
Dominant channelBlue
Hex per channelR 55 · G 5D · B 82

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Every value on this page was computed from “555d82” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.