Colour

#04478B

#04478B
Blue
Dark
Nearest: Dark slateblue

#04478B is a blue with RGB values 4, 71, 139 and HSL 210°, 94%, 28%. It is a dark colour, so white text on it reaches 9.2:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#04478B#04478B

HEX#04478B

RGBrgb(4, 71, 139)

RGB (0–1)0.0157, 0.2784, 0.5451

RGB percentages1.6%, 27.8%, 54.5%

HSLhsl(210.2, 94.4%, 28%)

HSV / HSBhsv(210.2, 97.1%, 54.5%)

CMYK97.1%, 48.9%, 0%, 45.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer280,459

CSS custom property--colour: #04478B;

Brightness & contrast

Relative luminance0.06396WCAG 2.x, 0 is black and 1 is white

Perceived brightness71.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 9.21:1

Contrast with white9.21:1WCAG normal text: AAA

Contrast with black2.28:1WCAG normal text: Fail

Greyscale equivalent#3E3E3E

Inverted#FBB874

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#1F4E8Eno red cones; affects about 1% of men; ΔE 4.3 from the original

Deuteranopia#00428Ano green cones; the most common form, about 1% of men; ΔE 3.9 from the original

Tritanopia#005862no blue cones; rare, and affects men and women equally; ΔE 41.6 from the original

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

Contrast with white, large text9.21:1WCAG large text: AAA

Contrast with black, large text2.28:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 16.8 Midnight blue · ΔE 27.6 Steel blue · ΔE 27.9 Cornflower blue · ΔE 32.2 Royal blue · ΔE 33 Rebecca purple · ΔE 34

Nearest named CSS colourDark slateblue (#483D8B)ΔE 16.83, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#8B4804

Analogous#048B8B, #04048B

Triadic#8B0447, #478B04

Split complementary#8B0404, #8B8B04

Tetradic#8B048B, #8B4804, #048B04

Tints, shades & saturation

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

Lighter +40%#61ADFA

Lighter +30%#2F93F9

Lighter +20%#077AEE

Lighter +10%#0560BD

Darker −10%#032E59

Darker −20%#011428

Darker −30%#000000

Darker −40%#000000

More saturated +25%#00478F

Less saturated −25%#164779

Channel breakdown

G71

B139

Red4 (1.6%)

Green71 (27.8%)

Blue139 (54.5%)

Hue210.22°

Saturation (HSL)94.41%

Lightness28.04%

Dominant channelBlue

Hex per channelR 04 · G 47 · B 8B

Keep nerding

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

#04478B

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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