Colour

#6666EE

#6666EE
Blue
Dark
Nearest: Medium slateblue

#6666EE is a blue with RGB values 102, 102, 238 and HSL 240°, 80%, 67%. It is a dark colour, so black text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Medium slateblue.

Colour values

#6666EE#6666EE

HEX#6666EE

HEX (short)#66E

RGBrgb(102, 102, 238)

RGB (0–1)0.4, 0.4, 0.9333

RGB percentages40%, 40%, 93.3%

HSLhsl(240, 80%, 66.7%)

HSV / HSBhsv(240, 57.1%, 93.3%)

CMYK57.1%, 57.1%, 0%, 6.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,711,022

CSS custom property--colour: #6666EE;

Brightness & contrast

Relative luminance0.18501WCAG 2.x, 0 is black and 1 is white

Perceived brightness125.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 4.7:1

Contrast with white4.47:1WCAG normal text: Fail

Contrast with black4.7:1WCAG normal text: AA

Greyscale equivalent#707070

Inverted#999911

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#007DF3no red cones; affects about 1% of men; ΔE 22.5 from the original

Deuteranopia#0072EBno green cones; the most common form, about 1% of men; ΔE 18.4 from the original

Tritanopia#0C86A0no blue cones; rare, and affects men and women equally; ΔE 74.9 from the original

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

Contrast with white, large text4.47:1WCAG large text: AA

Contrast with black, large text4.7:1WCAG large text: AAA

Named colours

Medium slateblue · ΔE 4.9 Slate blue · ΔE 12.2 Royal blue · ΔE 12.7 Medium purple · ΔE 19.4 Rebecca purple · ΔE 28 Dark orchid · ΔE 29.1

Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 4.88, a close match

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#EEEE66

Analogous#66AAEE, #AA66EE

Triadic#EE6666, #66EE66

Split complementary#EEAA66, #AAEE66

Tetradic#EE66AA, #EEEE66, #66EEAA

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#F0F0FD

Lighter +20%#C2C2F8

Lighter +10%#9494F3

Darker −10%#3838E9

Darker −20%#1818D6

Darker −30%#1313A8

Darker −40%#0E0E7A

More saturated +25%#5555FF

Less saturated −25%#7B7BD9

Channel breakdown

R102

G102

B238

Red102 (40%)

Green102 (40%)

Blue238 (93.3%)

Hue240°

Saturation (HSL)80%

Lightness66.67%

Dominant channelBlue

Hex per channelR 66 · G 66 · B EE

Keep nerding

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#6666EE

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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