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Recognised as Colour

#255CB0

  • #255CB0
  • Blue
  • Dark
  • Nearest: Dark slateblue

#255CB0 is a blue with RGB values 37, 92, 176 and HSL 216°, 65%, 42%. It is a dark colour, so white text on it reaches 6.5:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#255CB0#255CB0
HEX#255CB0
RGBrgb(37, 92, 176)
RGB (0–1)0.1451, 0.3608, 0.6902
RGB percentages14.5%, 36.1%, 69%
HSLhsl(216.3, 65.3%, 41.8%)
HSV / HSBhsv(216.3, 79%, 69%)
CMYK79%, 47.7%, 0%, 31%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,448,560
CSS custom property--colour: #255CB0;

Brightness & contrast

Relative luminance0.11182WCAG 2.x, 0 is black and 1 is white
Perceived brightness94.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.49:1
Contrast with white6.49:1WCAG normal text: AA
Contrast with black3.24:1WCAG normal text: Fail
Greyscale equivalent#565656
Inverted#DAA34F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2D65B3no red cones; affects about 1% of men; ΔE 5.7 from the original
Deuteranopia#0058AEno green cones; the most common form, about 1% of men; ΔE 2.9 from the original
Tritanopia#00707Dno blue cones; rare, and affects men and women equally; ΔE 49.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.49:1WCAG large text: AAA
Contrast with black, large text3.24:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 17.8Royal blue · ΔE 21.9Cornflower blue · ΔE 22.3Dodgerblue · ΔE 23.9Slate blue · ΔE 25.1Steel blue · ΔE 27.6
Nearest named CSS colourDark slateblue (#483D8B)ΔE 17.79, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B07925
Analogous#25A2B0, #3325B0
Triadic#B0255C, #5CB025
Split complementary#B03325, #A2B025
Tetradic#B025A2, #B07925, #25B033

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B2CAEF
Lighter +30%#88ADE6
Lighter +20%#5E90DD
Lighter +10%#3473D4
Darker −10%#1C4686
Darker −20%#13305C
Darker −30%#0A1A32
Darker −40%#020407
More saturated +25%#0A56CB
Less saturated −25%#406295

Channel breakdown

R37
G92
B176
Red37 (14.5%)
Green92 (36.1%)
Blue176 (69%)
Hue216.26°
Saturation (HSL)65.26%
Lightness41.76%
Dominant channelBlue
Hex per channelR 25 · G 5C · B B0

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Every value on this page was computed from “255cb0” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.