Colour

#004080

#004080
Blue
Dark
Nearest: Dark slateblue

#004080 is a blue with RGB values 0, 64, 128 and HSL 210°, 100%, 25%. It is a dark colour, so white text on it reaches 10.3:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#004080#004080

HEX#004080

RGBrgb(0, 64, 128)

RGB (0–1)0, 0.251, 0.502

RGB percentages0%, 25.1%, 50.2%

HSLhsl(210, 100%, 25.1%)

HSV / HSBhsv(210, 100%, 50.2%)

CMYK100%, 50%, 0%, 49.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,512

CSS custom property--colour: #004080;

Brightness & contrast

Relative luminance0.05225WCAG 2.x, 0 is black and 1 is white

Perceived brightness65.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 10.27:1

Contrast with white10.27:1WCAG normal text: AAA

Contrast with black2.05:1WCAG normal text: Fail

Greyscale equivalent#373737

Inverted#FFBF7F

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#194682no red cones; affects about 1% of men; ΔE 4 from the original

Deuteranopia#003C7Fno green cones; the most common form, about 1% of men; ΔE 3.1 from the original

Tritanopia#005059no blue cones; rare, and affects men and women equally; ΔE 40 from the original

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

Contrast with white, large text10.27:1WCAG large text: AAA

Contrast with black, large text2.05:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 17.3 Midnight blue · ΔE 26.8 Steel blue · ΔE 29.7 Rebecca purple · ΔE 34.8 Cornflower blue · ΔE 35.5 Royal blue · ΔE 36.1

Nearest named CSS colourDark slateblue (#483D8B)ΔE 17.32, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#804000

Analogous#008080, #000080

Triadic#800040, #408000

Split complementary#800000, #808000

Tetradic#800080, #804000, #008000

Tints, shades & saturation

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

Lighter +40%#4DA6FF

Lighter +30%#1A8CFF

Lighter +20%#0073E6

Lighter +10%#005AB3

Darker −10%#00274D

Darker −20%#000D1A

Darker −30%#000000

Darker −40%#000000

More saturated +25%#004080

Less saturated −25%#104070

Channel breakdown

G64

B128

Red0 (0%)

Green64 (25.1%)

Blue128 (50.2%)

Hue210°

Saturation (HSL)100%

Lightness25.1%

Dominant channelBlue

Hex per channelR 00 · G 40 · B 80

Keep nerding

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

#004080

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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