Colour

#6668CE

#6668CE
Blue
Dark
Nearest: Slate blue

#6668CE is a blue with RGB values 102, 104, 206 and HSL 239°, 51%, 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 Slate blue.

Colour values

#6668CE#6668CE

HEX#6668CE

RGBrgb(102, 104, 206)

RGB (0–1)0.4, 0.4078, 0.8078

RGB percentages40%, 40.8%, 80.8%

HSLhsl(238.8, 51.5%, 60.4%)

HSV / HSBhsv(238.8, 50.5%, 80.8%)

CMYK50.5%, 49.5%, 0%, 19.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,711,502

CSS custom property--colour: #6668CE;

Brightness & contrast

Relative luminance0.17182WCAG 2.x, 0 is black and 1 is white

Perceived brightness119.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 4.73:1

Contrast with white4.73:1WCAG normal text: AA

Contrast with black4.44:1WCAG normal text: Fail

Greyscale equivalent#6F6F6F

Inverted#999731

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#3877D2no red cones; affects about 1% of men; ΔE 16.3 from the original

Deuteranopia#2E6FCCno green cones; the most common form, about 1% of men; ΔE 14.7 from the original

Tritanopia#3C7E91no blue cones; rare, and affects men and women equally; ΔE 55.9 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text4.73:1WCAG large text: AAA

Contrast with black, large text4.44:1WCAG large text: AA

Named colours

Slate blue · ΔE 10.6 Royal blue · ΔE 12 Medium purple · ΔE 12.2 Medium slateblue · ΔE 18.9 Dark slateblue · ΔE 20.9 Cornflower blue · ΔE 22.6

Nearest named CSS colourSlate blue (#6A5ACD)ΔE 10.56, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#CECC66

Analogous#669CCE, #9866CE

Triadic#CE6668, #68CE66

Split complementary#CE9866, #9CCE66

Tetradic#CE669C, #CECC66, #66CE98

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#DADAF3

Lighter +20%#B3B4E7

Lighter +10%#8D8EDA

Darker −10%#3F42C2

Darker −20%#32349C

Darker −30%#262775

Darker −40%#191A4F

More saturated +25%#4D50E7

Less saturated −25%#7F80B5

Channel breakdown

R102

G104

B206

Red102 (40%)

Green104 (40.8%)

Blue206 (80.8%)

Hue238.85°

Saturation (HSL)51.49%

Lightness60.39%

Dominant channelBlue

Hex per channelR 66 · G 68 · B CE

Keep nerding

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#6668CE

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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