Colour

#040A0F

#040A0F
Blue
Dark
Nearest: Black

#040A0F is a blue with RGB values 4, 10, 15 and HSL 207°, 58%, 4%. It is a dark colour, so white text on it reaches 19.9:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#040A0F#040A0F

HEX#040A0F

RGBrgb(4, 10, 15)

RGB (0–1)0.0157, 0.0392, 0.0588

RGB percentages1.6%, 3.9%, 5.9%

HSLhsl(207.3, 57.9%, 3.7%)

HSV / HSBhsv(207.3, 73.3%, 5.9%)

CMYK73.3%, 33.3%, 0%, 94.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer264,719

CSS custom property--colour: #040A0F;

Brightness & contrast

Relative luminance0.00277WCAG 2.x, 0 is black and 1 is white

Perceived brightness9.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 19.9:1

Contrast with white19.9:1WCAG normal text: AAA

Contrast with black1.06:1WCAG normal text: Fail

Greyscale equivalent#090909

Inverted#FBF5F0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#080A0Fno red cones; affects about 1% of men; ΔE 1.1 from the original

Deuteranopia#06090Fno green cones; the most common form, about 1% of men; ΔE 0.9 from the original

Tritanopia#010B0Cno blue cones; rare, and affects men and women equally; ΔE 2.2 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text19.9:1WCAG large text: AAA

Contrast with black, large text1.06:1WCAG large text: Fail

Named colours

Black · ΔE 3.8 Dark slate grey · ΔE 30.8 Dim grey · ΔE 42 Slate grey · ΔE 51 Gray · ΔE 51.2 Teal · ΔE 54

Nearest named CSS colourBlack (#000000)ΔE 3.78, a close match

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0F0904

Analogous#040F0E, #04050F

Triadic#0F040A, #0A0F04

Split complementary#0F0405, #0F0E04

Tetradic#0E040F, #0F0904, #050F04

Tints, shades & saturation

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

Lighter +40%#2F75B0

Lighter +30%#245B88

Lighter +20%#194060

Lighter +10%#0F2537

Darker −10%#000000

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#020A11

Less saturated −25%#060A0D

Channel breakdown

G10

B15

Red4 (1.6%)

Green10 (3.9%)

Blue15 (5.9%)

Hue207.27°

Saturation (HSL)57.89%

Lightness3.73%

Dominant channelBlue

Hex per channelR 04 · G 0A · B 0F

Keep nerding

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

#040A0F

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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