Colour

#040309

#040309
Blue
Dark
Nearest: Black

#040309 is a blue with RGB values 4, 3, 9 and HSL 250°, 50%, 2%. It is a dark colour, so white text on it reaches 20.5:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#040309#040309

HEX#040309

RGBrgb(4, 3, 9)

RGB (0–1)0.0157, 0.0118, 0.0353

RGB percentages1.6%, 1.2%, 3.5%

HSLhsl(250, 50%, 2.4%)

HSV / HSBhsv(250, 66.7%, 3.5%)

CMYK55.6%, 66.7%, 0%, 96.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer262,921

CSS custom property--colour: #040309;

Brightness & contrast

Relative luminance0.00111WCAG 2.x, 0 is black and 1 is white

Perceived brightness4.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 20.55:1

Contrast with white20.55:1WCAG normal text: AAA

Contrast with black1.02:1WCAG normal text: Fail

Greyscale equivalent#040404

Inverted#FBFCF6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#020409no red cones; affects about 1% of men; ΔE 0.9 from the original

Deuteranopia#020409no green cones; the most common form, about 1% of men; ΔE 0.9 from the original

Tritanopia#030405no blue cones; rare, and affects men and women equally; ΔE 2.1 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text20.55:1WCAG large text: AAA

Contrast with black, large text1.02:1WCAG large text: Fail

Named colours

Black · ΔE 2.6 Dark slate grey · ΔE 32.9 Dim grey · ΔE 43.5 Slate grey · ΔE 52.6 Gray · ΔE 52.6 Dark slateblue · ΔE 55.7

Nearest named CSS colourBlack (#000000)ΔE 2.64, a close match

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#080903

Analogous#030509, #070309

Triadic#090403, #030904

Split complementary#090703, #050903

Tetradic#090305, #080903, #030907

Tints, shades & saturation

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

Lighter +40%#4836A2

Lighter +30%#37297C

Lighter +20%#261D55

Lighter +10%#15102F

Darker −10%#000000

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#03010B

Less saturated −25%#050507

Channel breakdown

Red4 (1.6%)

Green3 (1.2%)

Blue9 (3.5%)

Hue250°

Saturation (HSL)50%

Lightness2.35%

Dominant channelBlue

Hex per channelR 04 · G 03 · B 09

Keep nerding

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

#040309

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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