Colour

#040F47

#040F47
Blue
Dark
Nearest: Midnight blue

#040F47 is a blue with RGB values 4, 15, 71 and HSL 230°, 89%, 15%. It is a dark colour, so white text on it reaches 18:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#040F47#040F47

HEX#040F47

RGBrgb(4, 15, 71)

RGB (0–1)0.0157, 0.0588, 0.2784

RGB percentages1.6%, 5.9%, 27.8%

HSLhsl(230.1, 89.3%, 14.7%)

HSV / HSBhsv(230.1, 94.4%, 27.8%)

CMYK94.4%, 78.9%, 0%, 72.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer266,055

CSS custom property--colour: #040F47;

Brightness & contrast

Relative luminance0.00822WCAG 2.x, 0 is black and 1 is white

Perceived brightness26.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 18.03:1

Contrast with white18.03:1WCAG normal text: AAA

Contrast with black1.16:1WCAG normal text: Fail

Greyscale equivalent#111111

Inverted#FBF0B8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#001A49no red cones; affects about 1% of men; ΔE 9.6 from the original

Deuteranopia#001346no green cones; the most common form, about 1% of men; ΔE 4.4 from the original

Tritanopia#001F29no blue cones; rare, and affects men and women equally; ΔE 37.8 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text18.03:1WCAG large text: AAA

Contrast with black, large text1.16:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 19.7 Dark slateblue · ΔE 24.9 Rebecca purple · ΔE 35.8 Indigo · ΔE 38.1 Navy · ΔE 40 Black · ΔE 41.9

Nearest named CSS colourMidnight blue (#191970)ΔE 19.67, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#473C04

Analogous#043147, #1A0447

Triadic#47040F, #0F4704

Split complementary#471A04, #314704

Tetradic#470431, #473C04, #04471A

Tints, shades & saturation

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

Lighter +40%#2446F3

Lighter +30%#0C2ED8

Lighter +20%#0923A8

Lighter +10%#071977

Darker −10%#010517

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#000C4B

Less saturated −25%#0D153E

Channel breakdown

G15

B71

Red4 (1.6%)

Green15 (5.9%)

Blue71 (27.8%)

Hue230.15°

Saturation (HSL)89.33%

Lightness14.71%

Dominant channelBlue

Hex per channelR 04 · G 0F · B 47

Keep nerding

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#040F47

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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