Colour

#040B1F

#040B1F
Blue
Dark
Nearest: Black

#040B1F is a blue with RGB values 4, 11, 31 and HSL 224°, 77%, 7%. It is a dark colour, so white text on it reaches 19.6:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#040B1F#040B1F

HEX#040B1F

RGBrgb(4, 11, 31)

RGB (0–1)0.0157, 0.0431, 0.1216

RGB percentages1.6%, 4.3%, 12.2%

HSLhsl(224.4, 77.1%, 6.9%)

HSV / HSBhsv(224.4, 87.1%, 12.2%)

CMYK87.1%, 64.5%, 0%, 87.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer264,991

CSS custom property--colour: #040B1F;

Brightness & contrast

Relative luminance0.00364WCAG 2.x, 0 is black and 1 is white

Perceived brightness13.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 19.57:1

Contrast with white19.57:1WCAG normal text: AAA

Contrast with black1.07:1WCAG normal text: Fail

Greyscale equivalent#0B0B0B

Inverted#FBF4E0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#030D20no red cones; affects about 1% of men; ΔE 0.9 from the original

Deuteranopia#010B1Fno green cones; the most common form, about 1% of men; ΔE 0.9 from the original

Tritanopia#001013no blue cones; rare, and affects men and women equally; ΔE 11.9 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text19.57:1WCAG large text: AAA

Contrast with black, large text1.07:1WCAG large text: Fail

Named colours

Black · ΔE 13.7 Dark slate grey · ΔE 32.9 Dim grey · ΔE 43.2 Dark slateblue · ΔE 46.3 Midnight blue · ΔE 48.2 Slate grey · ΔE 49.9

Nearest named CSS colourBlack (#000000)ΔE 13.69, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1F1804

Analogous#04181F, #0B041F

Triadic#1F040B, #0B1F04

Split complementary#1F0B04, #181F04

Tetradic#1F0418, #1F1804, #041F0B

Tints, shades & saturation

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

Lighter +40%#1B4BD4

Lighter +30%#153BA7

Lighter +20%#102B79

Lighter +10%#0A1B4C

Darker −10%#000000

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#000923

Less saturated −25%#080D1B

Channel breakdown

G11

B31

Red4 (1.6%)

Green11 (4.3%)

Blue31 (12.2%)

Hue224.44°

Saturation (HSL)77.14%

Lightness6.86%

Dominant channelBlue

Hex per channelR 04 · G 0B · B 1F

Keep nerding

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

#040B1F

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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