Colour

#216FFF

#216FFF
Blue
Dark
Nearest: Royal blue

#216FFF is a blue with RGB values 33, 111, 255 and HSL 219°, 100%, 56%. It is a dark colour, so black text on it reaches 4.8:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#216FFF#216FFF

HEX#216FFF

RGBrgb(33, 111, 255)

RGB (0–1)0.1294, 0.4353, 1

RGB percentages12.9%, 43.5%, 100%

HSLhsl(218.9, 100%, 56.5%)

HSV / HSBhsv(218.9, 87.1%, 100%)

CMYK87.1%, 56.5%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,191,359

CSS custom property--colour: #216FFF;

Brightness & contrast

Relative luminance0.18912WCAG 2.x, 0 is black and 1 is white

Perceived brightness122.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 4.78:1

Contrast with white4.39:1WCAG normal text: Fail

Contrast with black4.78:1WCAG normal text: AA

Greyscale equivalent#696969

Inverted#DE9000

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#0083FFno red cones; affects about 1% of men; ΔE 16.6 from the original

Deuteranopia#006FFCno green cones; the most common form, about 1% of men; ΔE 2.4 from the original

Tritanopia#0094ACno blue cones; rare, and affects men and women equally; ΔE 78.3 from the original

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

Contrast with white, large text4.39:1WCAG large text: AA

Contrast with black, large text4.78:1WCAG large text: AAA

Named colours

Royal blue · ΔE 13.4 Medium slateblue · ΔE 16.2 Slate blue · ΔE 21.2 Dodgerblue · ΔE 26.6 Medium purple · ΔE 28.6 Cornflower blue · ΔE 37.2

Nearest named CSS colourRoyal blue (#4169E1)ΔE 13.38, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#FFB121

Analogous#21DEFF, #4221FF

Triadic#FF216F, #6FFF21

Split complementary#FF4221, #DEFF21

Tetradic#FF21DE, #FFB121, #21FF42

Tints, shades & saturation

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

Lighter +40%#EDF3FF

Lighter +30%#BAD2FF

Lighter +20%#87B1FF

Lighter +10%#5490FF

Darker −10%#0053ED

Darker −20%#0041BA

Darker −30%#002F87

Darker −40%#001E54

More saturated +25%#216FFF

Less saturated −25%#3D77E3

Channel breakdown

R33

G111

B255

Red33 (12.9%)

Green111 (43.5%)

Blue255 (100%)

Hue218.92°

Saturation (HSL)100%

Lightness56.47%

Dominant channelBlue

Hex per channelR 21 · G 6F · B FF

Keep nerding

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#216FFF

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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