Colour

#0053AB

#0053AB
Blue
Dark
Nearest: Dark slateblue

#0053AB is a blue with RGB values 0, 83, 171 and HSL 211°, 100%, 34%. It is a dark colour, so white text on it reaches 7.4:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#0053AB#0053AB

HEX#0053AB

RGBrgb(0, 83, 171)

RGB (0–1)0, 0.3255, 0.6706

RGB percentages0%, 32.5%, 67.1%

HSLhsl(210.9, 100%, 33.5%)

HSV / HSBhsv(210.9, 100%, 67.1%)

CMYK100%, 51.5%, 0%, 32.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer21,419

CSS custom property--colour: #0053AB;

Brightness & contrast

Relative luminance0.09127WCAG 2.x, 0 is black and 1 is white

Perceived brightness85.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.43:1

Contrast with white7.43:1WCAG normal text: AAA

Contrast with black2.83:1WCAG normal text: Fail

Greyscale equivalent#484848

Inverted#FFAC54

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#155DAEno red cones; affects about 1% of men; ΔE 6.7 from the original

Deuteranopia#004FA9no green cones; the most common form, about 1% of men; ΔE 2.5 from the original

Tritanopia#006977no blue cones; rare, and affects men and women equally; ΔE 51.3 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text7.43:1WCAG large text: AAA

Contrast with black, large text2.83:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 16.8 Royal blue · ΔE 20.7 Slate blue · ΔE 24 Dodgerblue · ΔE 25.8 Cornflower blue · ΔE 26.4 Midnight blue · ΔE 27

Nearest named CSS colourDark slateblue (#483D8B)ΔE 16.8, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#AB5800

Analogous#00A9AB, #0200AB

Triadic#AB0053, #53AB00

Split complementary#AB0200, #A9AB00

Tetradic#AB00A9, #AB5800, #00AB02

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#78BAFF

Lighter +30%#459FFF

Lighter +20%#1285FF

Lighter +10%#006CDE

Darker −10%#003A78

Darker −20%#002145

Darker −30%#000912

Darker −40%#000000

More saturated +25%#0053AB

Less saturated −25%#155496

Channel breakdown

G83

B171

Red0 (0%)

Green83 (32.5%)

Blue171 (67.1%)

Hue210.88°

Saturation (HSL)100%

Lightness33.53%

Dominant channelBlue

Hex per channelR 00 · G 53 · B AB

Keep nerding

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#0053AB

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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