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Colour

#0081CB

  • #0081CB
  • Blue
  • Dark
  • Nearest: Steel blue

#0081CB is a blue with RGB values 0, 129, 203 and HSL 202°, 100%, 40%. It is a dark colour, so black text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#0081CB#0081CB
HEX#0081CB
RGBrgb(0, 129, 203)
RGB (0–1)0, 0.5059, 0.7961
RGB percentages0%, 50.6%, 79.6%
HSLhsl(201.9, 100%, 39.8%)
HSV / HSBhsv(201.9, 100%, 79.6%)
CMYK100%, 36.5%, 0%, 20.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer33,227
CSS custom property--colour: #0081CB;

Brightness & contrast

Relative luminance0.20012WCAG 2.x, 0 is black and 1 is white
Perceived brightness120.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5:1
Contrast with white4.2:1WCAG normal text: Fail
Contrast with black5:1WCAG normal text: AA
Greyscale equivalent#6B6B6B
Inverted#FF7E34

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5D84CEno red cones; affects about 1% of men; ΔE 11.4 from the original
Deuteranopia#4174CAno green cones; the most common form, about 1% of men; ΔE 13.8 from the original
Tritanopia#00939Cno blue cones; rare, and affects men and women equally; ΔE 42.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.2:1WCAG large text: AA
Contrast with black, large text5:1WCAG large text: AAA

Named colours

Steel blue · ΔE 14.4Cornflower blue · ΔE 15.5Dodgerblue · ΔE 22.1Deep skyblue · ΔE 26.2Royal blue · ΔE 34.2Light skyblue · ΔE 34.3
Nearest named CSS colourSteel blue (#4682B4)ΔE 14.38, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CB4A00
Analogous#00CBAF, #001CCB
Triadic#CB0081, #81CB00
Split complementary#CB001C, #CBAF00
Tetradic#AF00CB, #CB4A00, #1CCB00

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#98D9FF
Lighter +30%#65C7FF
Lighter +20%#32B4FF
Lighter +10%#00A1FE
Darker −10%#006198
Darker −20%#004065
Darker −30%#002032
Darker −40%#000000
More saturated +25%#0081CB
Less saturated −25%#197AB2

Channel breakdown

R0
G129
B203
Red0 (0%)
Green129 (50.6%)
Blue203 (79.6%)
Hue201.87°
Saturation (HSL)100%
Lightness39.8%
Dominant channelBlue
Hex per channelR 00 · G 81 · B CB

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Every value on this page was computed from “0081cb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.