Colour

#181C20

#181C20
Blue
Dark
Nearest: Black

#181C20 is a blue with RGB values 24, 28, 32 and HSL 210°, 14%, 11%. It is a dark colour, so white text on it reaches 17.1:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#181C20#181C20

HEX#181C20

RGBrgb(24, 28, 32)

RGB (0–1)0.0941, 0.1098, 0.1255

RGB percentages9.4%, 11%, 12.5%

HSLhsl(210, 14.3%, 11%)

HSV / HSBhsv(210, 25%, 12.5%)

CMYK25%, 12.5%, 0%, 87.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,580,064

CSS custom property--colour: #181C20;

Brightness & contrast

Relative luminance0.01129WCAG 2.x, 0 is black and 1 is white

Perceived brightness27.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 17.13:1

Contrast with white17.13:1WCAG normal text: AAA

Contrast with black1.23:1WCAG normal text: Fail

Greyscale equivalent#1B1B1B

Inverted#E7E3DF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#1B1C20no red cones; affects about 1% of men; ΔE 1.4 from the original

Deuteranopia#1A1B20no green cones; the most common form, about 1% of men; ΔE 1.6 from the original

Tritanopia#161D1Dno blue cones; rare, and affects men and women equally; ΔE 3.4 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text17.13:1WCAG large text: AAA

Contrast with black, large text1.23:1WCAG large text: Fail

Named colours

Black · ΔE 10.6 Dark slate grey · ΔE 23.9 Dim grey · ΔE 34.6 Slate grey · ΔE 43.4 Gray · ΔE 43.7 Light slate grey · ΔE 46.6

Nearest named CSS colourBlack (#000000)ΔE 10.6, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#201C18

Analogous#182020, #181820

Triadic#20181C, #1C2018

Split complementary#201818, #202018

Tetradic#201820, #201C18, #182018

Tints, shades & saturation

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

Lighter +40%#708294

Lighter +30%#5A6977

Lighter +20%#444F5A

Lighter +10%#2E363D

Darker −10%#020303

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#111C27

Less saturated −25%#1C1C1C

Channel breakdown

R24

G28

B32

Red24 (9.4%)

Green28 (11%)

Blue32 (12.5%)

Hue210°

Saturation (HSL)14.29%

Lightness10.98%

Dominant channelBlue

Hex per channelR 18 · G 1C · B 20

Keep nerding

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#181C20

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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