Colour

#066DD4

#066DD4
Blue
Dark
Nearest: Royal blue

#066DD4 is a blue with RGB values 6, 109, 212 and HSL 210°, 94%, 43%. It is a dark colour, so white text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#066DD4#066DD4

HEX#066DD4

RGBrgb(6, 109, 212)

RGB (0–1)0.0235, 0.4275, 0.8314

RGB percentages2.4%, 42.7%, 83.1%

HSLhsl(210, 94.5%, 42.7%)

HSV / HSBhsv(210, 97.2%, 83.1%)

CMYK97.2%, 48.6%, 0%, 16.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer421,332

CSS custom property--colour: #066DD4;

Brightness & contrast

Relative luminance0.15729WCAG 2.x, 0 is black and 1 is white

Perceived brightness110 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.07:1

Contrast with white5.07:1WCAG normal text: AA

Contrast with black4.15:1WCAG normal text: Fail

Greyscale equivalent#5F5F5F

Inverted#F9922B

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#2D77D8no red cones; affects about 1% of men; ΔE 5.8 from the original

Deuteranopia#0067D2no green cones; the most common form, about 1% of men; ΔE 3.9 from the original

Tritanopia#008696no blue cones; rare, and affects men and women equally; ΔE 57.7 from the original

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

Contrast with white, large text5.07:1WCAG large text: AAA

Contrast with black, large text4.15:1WCAG large text: AA

Named colours

Royal blue · ΔE 13.3 Dodgerblue · ΔE 13.9 Cornflower blue · ΔE 19.2 Slate blue · ΔE 22 Medium purple · ΔE 26.1 Dark slateblue · ΔE 26.6

Nearest named CSS colourRoyal blue (#4169E1)ΔE 13.3, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#D46D06

Analogous#06D4D4, #0606D4

Triadic#D4066D, #6DD406

Split complementary#D40606, #D4D406

Tetradic#D406D4, #D46D06, #06D406

Tints, shades & saturation

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

Lighter +40%#A9D3FD

Lighter +30%#78BAFB

Lighter +20%#46A0FA

Lighter +10%#1587F8

Darker −10%#0554A2

Darker −20%#033A71

Darker −30%#02213F

Darker −40%#00070E

More saturated +25%#006DDA

Less saturated −25%#216DB9

Channel breakdown

G109

B212

Red6 (2.4%)

Green109 (42.7%)

Blue212 (83.1%)

Hue210°

Saturation (HSL)94.5%

Lightness42.75%

Dominant channelBlue

Hex per channelR 06 · G 6D · B D4

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#066DD4

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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