Colour

#6688CB

#6688CB
Blue
Dark
Nearest: Cornflower blue

#6688CB is a blue with RGB values 102, 136, 203 and HSL 220°, 49%, 60%. It is a dark colour, so black text on it reaches 5.9:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#6688CB#6688CB

HEX#6688CB

RGBrgb(102, 136, 203)

RGB (0–1)0.4, 0.5333, 0.7961

RGB percentages40%, 53.3%, 79.6%

HSLhsl(219.8, 49.3%, 59.8%)

HSV / HSBhsv(219.8, 49.8%, 79.6%)

CMYK49.8%, 33%, 0%, 20.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,719,691

CSS custom property--colour: #6688CB;

Brightness & contrast

Relative luminance0.24745WCAG 2.x, 0 is black and 1 is white

Perceived brightness136.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.95:1

Contrast with white3.53:1WCAG normal text: Fail

Contrast with black5.95:1WCAG normal text: AA

Greyscale equivalent#868686

Inverted#997734

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6E8DCEno red cones; affects about 1% of men; ΔE 2.5 from the original

Deuteranopia#6384CAno green cones; the most common form, about 1% of men; ΔE 2.4 from the original

Tritanopia#3996A0no blue cones; rare, and affects men and women equally; ΔE 39.5 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text3.53:1WCAG large text: AA

Contrast with black, large text5.95:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 12.4 Steel blue · ΔE 13.2 Dodgerblue · ΔE 25.4 Light slate grey · ΔE 28.7 Deep skyblue · ΔE 29.3 Slate grey · ΔE 29.4

Nearest named CSS colourCornflower blue (#6495ED)ΔE 12.35, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#CBA966

Analogous#66BACB, #7666CB

Triadic#CB6688, #88CB66

Split complementary#CB7766, #BACB66

Tetradic#CB66BB, #CBA966, #66CB77

Tints, shades & saturation

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

Lighter +40%#FEFEFF

Lighter +30%#D8E1F2

Lighter +20%#B2C3E5

Lighter +10%#8CA6D8

Darker −10%#406BBE

Darker −20%#335598

Darker −30%#274071

Darker −40%#1A2A4B

More saturated +25%#4C80E5

Less saturated −25%#8090B1

Channel breakdown

R102

G136

B203

Red102 (40%)

Green136 (53.3%)

Blue203 (79.6%)

Hue219.8°

Saturation (HSL)49.27%

Lightness59.8%

Dominant channelBlue

Hex per channelR 66 · G 88 · B CB

Keep nerding

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#6688CB

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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