Colour

#3366FD

#3366FD
Blue
Dark
Nearest: Medium slateblue

#3366FD is a blue with RGB values 51, 102, 253 and HSL 225°, 98%, 60%. It is a dark colour, so white text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Medium slateblue.

Colour values

#3366FD#3366FD

HEX#3366FD

RGBrgb(51, 102, 253)

RGB (0–1)0.2, 0.4, 0.9922

RGB percentages20%, 40%, 99.2%

HSLhsl(224.9, 98.1%, 59.6%)

HSV / HSBhsv(224.9, 79.8%, 99.2%)

CMYK79.8%, 59.7%, 0%, 0.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer3,368,701

CSS custom property--colour: #3366FD;

Brightness & contrast

Relative luminance0.17298WCAG 2.x, 0 is black and 1 is white

Perceived brightness119.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 4.71:1

Contrast with white4.71:1WCAG normal text: AA

Contrast with black4.46:1WCAG normal text: Fail

Greyscale equivalent#666666

Inverted#CC9902

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#007DFFno red cones; affects about 1% of men; ΔE 18.5 from the original

Deuteranopia#006AFAno green cones; the most common form, about 1% of men; ΔE 6.2 from the original

Tritanopia#008DA8no blue cones; rare, and affects men and women equally; ΔE 81.5 from the original

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

Contrast with white, large text4.71:1WCAG large text: AAA

Contrast with black, large text4.46:1WCAG large text: AA

Named colours

Medium slateblue · ΔE 15.3 Royal blue · ΔE 17.8 Slate blue · ΔE 22.2 Medium purple · ΔE 30.3 Dodgerblue · ΔE 33.1 Blue violet · ΔE 34.1

Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 15.33, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#FDCA33

Analogous#33CBFD, #6533FD

Triadic#FD3366, #66FD33

Split complementary#FD6533, #CBFD33

Tetradic#FD33CB, #FDCA33, #33FD65

Tints, shades & saturation

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

Lighter +40%#FDFEFF

Lighter +30%#CBD8FE

Lighter +20%#98B2FE

Lighter +10%#668CFD

Darker −10%#0241FB

Darker −20%#0234C8

Darker −30%#012796

Darker −40%#011A63

More saturated +25%#3165FF

Less saturated −25%#4D73E3

Channel breakdown

R51

G102

B253

Red51 (20%)

Green102 (40%)

Blue253 (99.2%)

Hue224.85°

Saturation (HSL)98.06%

Lightness59.61%

Dominant channelBlue

Hex per channelR 33 · G 66 · B FD

Keep nerding

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#3366FD

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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