Colour

#0051CA

#0051CA
Blue
Dark
Nearest: Royal blue

#0051CA is a blue with RGB values 0, 81, 202 and HSL 216°, 100%, 40%. It is a dark colour, so white text on it reaches 6.9:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#0051CA#0051CA

HEX#0051CA

RGBrgb(0, 81, 202)

RGB (0–1)0, 0.3176, 0.7922

RGB percentages0%, 31.8%, 79.2%

HSLhsl(215.9, 100%, 39.6%)

HSV / HSBhsv(215.9, 100%, 79.2%)

CMYK100%, 59.9%, 0%, 20.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer20,938

CSS custom property--colour: #0051CA;

Brightness & contrast

Relative luminance0.10149WCAG 2.x, 0 is black and 1 is white

Perceived brightness92.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.93:1

Contrast with white6.93:1WCAG normal text: AA

Contrast with black3.03:1WCAG normal text: Fail

Greyscale equivalent#494949

Inverted#FFAE35

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#0062CEno red cones; affects about 1% of men; ΔE 12.2 from the original

Deuteranopia#0052C8no green cones; the most common form, about 1% of men; ΔE 2 from the original

Tritanopia#007185no blue cones; rare, and affects men and women equally; ΔE 68.9 from the original

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

Contrast with white, large text6.93:1WCAG large text: AAA

Contrast with black, large text3.03:1WCAG large text: AA

Named colours

Royal blue · ΔE 10.3 Slate blue · ΔE 14.7 Medium slateblue · ΔE 19.2 Rebecca purple · ΔE 26 Medium purple · ΔE 26 Dark slateblue · ΔE 27

Nearest named CSS colourRoyal blue (#4169E1)ΔE 10.31, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#CA7900

Analogous#00B6CA, #1400CA

Triadic#CA0051, #51CA00

Split complementary#CA1400, #B6CA00

Tetradic#CA00B6, #CA7900, #00CA14

Tints, shades & saturation

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

Lighter +40%#97C1FF

Lighter +30%#64A2FF

Lighter +20%#3184FF

Lighter +10%#0065FD

Darker −10%#003D97

Darker −20%#002864

Darker −30%#001431

Darker −40%#000000

More saturated +25%#0051CA

Less saturated −25%#1956B1

Channel breakdown

G81

B202

Red0 (0%)

Green81 (31.8%)

Blue202 (79.2%)

Hue215.94°

Saturation (HSL)100%

Lightness39.61%

Dominant channelBlue

Hex per channelR 00 · G 51 · B CA

Keep nerding

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#0051CA

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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