Colour

#6668EE

#6668EE
Blue
Dark
Nearest: Medium slateblue

#6668EE is a blue with RGB values 102, 104, 238 and HSL 239°, 80%, 67%. It is a dark colour, so black text on it reaches 4.8:1 contrast (AA for normal text). The nearest named colour is Medium slateblue.

Colour values

#6668EE#6668EE

HEX#6668EE

RGBrgb(102, 104, 238)

RGB (0–1)0.4, 0.4078, 0.9333

RGB percentages40%, 40.8%, 93.3%

HSLhsl(239.1, 80%, 66.7%)

HSV / HSBhsv(239.1, 57.1%, 93.3%)

CMYK57.1%, 56.3%, 0%, 6.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,711,534

CSS custom property--colour: #6668EE;

Brightness & contrast

Relative luminance0.18898WCAG 2.x, 0 is black and 1 is white

Perceived brightness126.2 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#717171

Inverted#999711

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#007EF3no red cones; affects about 1% of men; ΔE 21.9 from the original

Deuteranopia#0073EBno green cones; the most common form, about 1% of men; ΔE 17.9 from the original

Tritanopia#0B88A1no blue cones; rare, and affects men and women equally; ΔE 74.3 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

Medium slateblue · ΔE 5.1 Royal blue · ΔE 11.5 Slate blue · ΔE 11.6 Medium purple · ΔE 18.5 Rebecca purple · ΔE 28 Dodgerblue · ΔE 28.9

Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 5.06, clearly different but related

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#EEEC66

Analogous#66ACEE, #A866EE

Triadic#EE6668, #68EE66

Split complementary#EEA866, #ACEE66

Tetradic#EE66AC, #EEEC66, #66EEA8

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#F0F0FD

Lighter +20%#C2C3F8

Lighter +10%#9495F3

Darker −10%#383BE9

Darker −20%#181BD6

Darker −30%#1315A8

Darker −40%#0E0F7A

More saturated +25%#5558FF

Less saturated −25%#7B7DD9

Channel breakdown

R102

G104

B238

Red102 (40%)

Green104 (40.8%)

Blue238 (93.3%)

Hue239.12°

Saturation (HSL)80%

Lightness66.67%

Dominant channelBlue

Hex per channelR 66 · G 68 · B EE

Keep nerding

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#6668EE

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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