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Recognised as Colour

#555E6B

  • #555E6B
  • Blue
  • Dark
  • Nearest: Dim grey

#555E6B is a blue with RGB values 85, 94, 107 and HSL 215°, 11%, 38%. It is a dark colour, so white text on it reaches 6.6:1 contrast (AA for normal text). The nearest named colour is Dim grey.

Colour values

#555E6B#555E6B
HEX#555E6B
RGBrgb(85, 94, 107)
RGB (0–1)0.3333, 0.3686, 0.4196
RGB percentages33.3%, 36.9%, 42%
HSLhsl(215.5, 11.5%, 37.6%)
HSV / HSBhsv(215.5, 20.6%, 42%)
CMYK20.6%, 12.1%, 0%, 58%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,594,731
CSS custom property--colour: #555E6B;

Brightness & contrast

Relative luminance0.10998WCAG 2.x, 0 is black and 1 is white
Perceived brightness93 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.56:1
Contrast with white6.56:1WCAG normal text: AA
Contrast with black3.2:1WCAG normal text: Fail
Greyscale equivalent#5D5D5D
Inverted#AAA194

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5A5E6Cno red cones; affects about 1% of men; ΔE 2.1 from the original
Deuteranopia#575C6Bno green cones; the most common form, about 1% of men; ΔE 2.1 from the original
Tritanopia#4F6162no blue cones; rare, and affects men and women equally; ΔE 8.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.56:1WCAG large text: AAA
Contrast with black, large text3.2:1WCAG large text: AA

Named colours

Dim grey · ΔE 9.8Slate grey · ΔE 13.5Dark slate grey · ΔE 14.9Gray · ΔE 16.4Light slate grey · ΔE 16.6Steel blue · ΔE 27.2
Nearest named CSS colourDim grey (#696969)ΔE 9.84, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6B6255
Analogous#55696B, #57556B
Triadic#6B555E, #5E6B55
Split complementary#6B5755, #696B55
Tetradic#6B5569, #6B6255, #556B57

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BFC5CD
Lighter +30%#A3ABB6
Lighter +20%#87919F
Lighter +10%#6C7787
Darker −10%#3E454F
Darker −20%#282C32
Darker −30%#111316
Darker −40%#000000
More saturated +25%#3D5A83
Less saturated −25%#606060

Channel breakdown

R85
G94
B107
Red85 (33.3%)
Green94 (36.9%)
Blue107 (42%)
Hue215.45°
Saturation (HSL)11.46%
Lightness37.65%
Dominant channelBlue
Hex per channelR 55 · G 5E · B 6B

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Every value on this page was computed from “555e6b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.