Colour

#0051C8

#0051C8
Blue
Dark
Nearest: Royal blue

#0051C8 is a blue with RGB values 0, 81, 200 and HSL 216°, 100%, 39%. It is a dark colour, so white text on it reaches 7:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#0051C8#0051C8

HEX#0051C8

RGBrgb(0, 81, 200)

RGB (0–1)0, 0.3176, 0.7843

RGB percentages0%, 31.8%, 78.4%

HSLhsl(215.7, 100%, 39.2%)

HSV / HSBhsv(215.7, 100%, 78.4%)

CMYK100%, 59.5%, 0%, 21.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer20,936

CSS custom property--colour: #0051C8;

Brightness & contrast

Relative luminance0.10055WCAG 2.x, 0 is black and 1 is white

Perceived brightness91.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.97:1

Contrast with white6.97:1WCAG normal text: AA

Contrast with black3.01:1WCAG normal text: Fail

Greyscale equivalent#484848

Inverted#FFAE37

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#0062CCno red cones; affects about 1% of men; ΔE 12.3 from the original

Deuteranopia#0051C6no green cones; the most common form, about 1% of men; ΔE 1.2 from the original

Tritanopia#007084no blue cones; rare, and affects men and women equally; ΔE 67.6 from the original

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

Contrast with white, large text6.97:1WCAG large text: AAA

Contrast with black, large text3.01:1WCAG large text: AA

Named colours

Royal blue · ΔE 10.1 Slate blue · ΔE 14.7 Medium slateblue · ΔE 19.7 Rebecca purple · ΔE 25.7 Medium purple · ΔE 25.8 Dark slateblue · ΔE 26.1

Nearest named CSS colourRoyal blue (#4169E1)ΔE 10.14, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#C87700

Analogous#00B5C8, #1300C8

Triadic#C80051, #51C800

Split complementary#C81300, #B5C800

Tetradic#C800B5, #C87700, #00C813

Tints, shades & saturation

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

Lighter +40%#95C0FF

Lighter +30%#62A2FF

Lighter +20%#2F83FF

Lighter +10%#0066FB

Darker −10%#003C95

Darker −20%#002862

Darker −30%#00132F

Darker −40%#000000

More saturated +25%#0051C8

Less saturated −25%#1956AF

Channel breakdown

G81

B200

Red0 (0%)

Green81 (31.8%)

Blue200 (78.4%)

Hue215.7°

Saturation (HSL)100%

Lightness39.22%

Dominant channelBlue

Hex per channelR 00 · G 51 · B C8

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#0051C8

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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