Colour

#010409

#010409
Blue
Dark
Nearest: Black

#010409 is a blue with RGB values 1, 4, 9 and HSL 218°, 80%, 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

#010409#010409

HEX#010409

RGBrgb(1, 4, 9)

RGB (0–1)0.0039, 0.0157, 0.0353

RGB percentages0.4%, 1.6%, 3.5%

HSLhsl(217.5, 80%, 2%)

HSV / HSBhsv(217.5, 88.9%, 3.5%)

CMYK88.9%, 55.6%, 0%, 96.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer66,569

CSS custom property--colour: #010409;

Brightness & contrast

Relative luminance0.00113WCAG 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 20.54:1

Contrast with white20.54:1WCAG normal text: AAA

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

Greyscale equivalent#040404

Inverted#FEFBF6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#030409no red cones; affects about 1% of men; ΔE 0.6 from the original

Deuteranopia#020309no green cones; the most common form, about 1% of men; ΔE 0.7 from the original

Tritanopia#000506no blue cones; rare, and affects men and women equally; ΔE 1.7 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text20.54:1WCAG large text: AAA

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

Named colours

Black · ΔE 2.4 Dark slate grey · ΔE 32.4 Dim grey · ΔE 43.4 Slate grey · ΔE 52.5 Gray · ΔE 52.6 Teal · ΔE 55.7

Nearest named CSS colourBlack (#000000)ΔE 2.4, a close match

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#090601

Analogous#010809, #020109

Triadic#090104, #040901

Split complementary#090201, #080901

Tetradic#090108, #090601, #010902

Tints, shades & saturation

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

Lighter +40%#1556C1

Lighter +30%#104193

Lighter +20%#0B2D65

Lighter +10%#061837

Darker −10%#000000

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#00040A

Less saturated −25%#020408

Channel breakdown

Red1 (0.4%)

Green4 (1.6%)

Blue9 (3.5%)

Hue217.5°

Saturation (HSL)80%

Lightness1.96%

Dominant channelBlue

Hex per channelR 01 · G 04 · B 09

Keep nerding

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#010409

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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