Colour

#66AAEE

#66AAEE
Blue
Dark
Nearest: Cornflower blue

#66AAEE is a blue with RGB values 102, 170, 238 and HSL 210°, 80%, 67%. It is a dark colour, so black text on it reaches 8.5:1 contrast (AAA for normal text). The nearest named colour is Cornflower blue.

Colour values

#66AAEE#66AAEE

HEX#66AAEE

HEX (short)#6AE

RGBrgb(102, 170, 238)

RGB (0–1)0.4, 0.6667, 0.9333

RGB percentages40%, 66.7%, 93.3%

HSLhsl(210, 80%, 66.7%)

HSV / HSBhsv(210, 57.1%, 93.3%)

CMYK57.1%, 28.6%, 0%, 6.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,728,430

CSS custom property--colour: #66AAEE;

Brightness & contrast

Relative luminance0.37747WCAG 2.x, 0 is black and 1 is white

Perceived brightness162.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 8.55:1

Contrast with white2.46:1WCAG normal text: Fail

Contrast with black8.55:1WCAG normal text: AAA

Greyscale equivalent#A0A0A0

Inverted#995511

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#8DADF1no red cones; affects about 1% of men; ΔE 9.2 from the original

Deuteranopia#7C9FEDno green cones; the most common form, about 1% of men; ΔE 11.2 from the original

Tritanopia#00BAC2no blue cones; rare, and affects men and women equally; ΔE 42 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text2.46:1WCAG large text: Fail

Contrast with black, large text8.55:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 15.5 Deep skyblue · ΔE 16.5 Steel blue · ΔE 17.6 Light skyblue · ΔE 19.1 Sky blue · ΔE 25.8 Dodgerblue · ΔE 27.1

Nearest named CSS colourCornflower blue (#6495ED)ΔE 15.49, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#EEAA66

Analogous#66EEEE, #6666EE

Triadic#EE66AA, #AAEE66

Split complementary#EE6666, #EEEE66

Tetradic#EE66EE, #EEAA66, #66EE66

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#F0F7FD

Lighter +20%#C2DDF8

Lighter +10%#94C4F3

Darker −10%#3891E9

Darker −20%#1877D6

Darker −30%#135EA8

Darker −40%#0E447A

More saturated +25%#55AAFF

Less saturated −25%#7BAAD9

Channel breakdown

R102

G170

B238

Red102 (40%)

Green170 (66.7%)

Blue238 (93.3%)

Hue210°

Saturation (HSL)80%

Lightness66.67%

Dominant channelBlue

Hex per channelR 66 · G AA · B EE

Keep nerding

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#66AAEE

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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