Colour

#0063CC

#0063CC
Blue
Dark
Nearest: Royal blue

#0063CC is a blue with RGB values 0, 99, 204 and HSL 211°, 100%, 40%. It is a dark colour, so white text on it reaches 5.7:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#0063CC#0063CC

HEX#0063CC

RGBrgb(0, 99, 204)

RGB (0–1)0, 0.3882, 0.8

RGB percentages0%, 38.8%, 80%

HSLhsl(210.9, 100%, 40%)

HSV / HSBhsv(210.9, 100%, 80%)

CMYK100%, 51.5%, 0%, 20%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer25,548

CSS custom property--colour: #0063CC;

Brightness & contrast

Relative luminance0.13283WCAG 2.x, 0 is black and 1 is white

Perceived brightness102.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.74:1

Contrast with white5.74:1WCAG normal text: AA

Contrast with black3.66:1WCAG normal text: Fail

Greyscale equivalent#565656

Inverted#FF9C33

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#156FD0no red cones; affects about 1% of men; ΔE 7.7 from the original

Deuteranopia#005ECAno green cones; the most common form, about 1% of men; ΔE 3.2 from the original

Tritanopia#007D8Eno blue cones; rare, and affects men and women equally; ΔE 59.1 from the original

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

Contrast with white, large text5.74:1WCAG large text: AAA

Contrast with black, large text3.66:1WCAG large text: AA

Named colours

Royal blue · ΔE 11.1 Dodgerblue · ΔE 17.9 Slate blue · ΔE 19.2 Cornflower blue · ΔE 23.4 Dark slateblue · ΔE 24.2 Medium purple · ΔE 25.3

Nearest named CSS colourRoyal blue (#4169E1)ΔE 11.06, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#CC6900

Analogous#00C9CC, #0300CC

Triadic#CC0063, #63CC00

Split complementary#CC0300, #C9CC00

Tetradic#CC00C9, #CC6900, #00CC03

Tints, shades & saturation

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

Lighter +40%#99CBFF

Lighter +30%#66B0FF

Lighter +20%#3396FF

Lighter +10%#007CFF

Darker −10%#004A99

Darker −20%#003266

Darker −30%#001933

Darker −40%#000000

More saturated +25%#0063CC

Less saturated −25%#1964B3

Channel breakdown

G99

B204

Red0 (0%)

Green99 (38.8%)

Blue204 (80%)

Hue210.88°

Saturation (HSL)100%

Lightness40%

Dominant channelBlue

Hex per channelR 00 · G 63 · B CC

Keep nerding

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#0063CC

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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