Colour

#181C1F

#181C1F
Blue
Dark
Nearest: Black

#181C1F is a blue with RGB values 24, 28, 31 and HSL 206°, 13%, 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

#181C1F#181C1F

HEX#181C1F

RGBrgb(24, 28, 31)

RGB (0–1)0.0941, 0.1098, 0.1216

RGB percentages9.4%, 11%, 12.2%

HSLhsl(205.7, 12.7%, 10.8%)

HSV / HSBhsv(205.7, 22.6%, 12.2%)

CMYK22.6%, 9.7%, 0%, 87.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,580,063

CSS custom property--colour: #181C1F;

Brightness & contrast

Relative luminance0.01124WCAG 2.x, 0 is black and 1 is white

Perceived brightness27.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 17.15:1

Contrast with white17.15:1WCAG normal text: AAA

Contrast with black1.22:1WCAG normal text: Fail

Greyscale equivalent#1B1B1B

Inverted#E7E3E0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#1B1C1Fno red cones; affects about 1% of men; ΔE 1.5 from the original

Deuteranopia#1A1B1Fno green cones; the most common form, about 1% of men; ΔE 1.7 from the original

Tritanopia#161D1Dno blue cones; rare, and affects men and women equally; ΔE 2.7 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text17.15:1WCAG large text: AAA

Contrast with black, large text1.22:1WCAG large text: Fail

Named colours

Black · ΔE 10.4 Dark slate grey · ΔE 23.8 Dim grey · ΔE 34.6 Slate grey · ΔE 43.6 Gray · ΔE 43.7 Light slate grey · ΔE 46.7

Nearest named CSS colourBlack (#000000)ΔE 10.39, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1F1B18

Analogous#181F1F, #18181F

Triadic#1F181C, #1C1F18

Split complementary#1F1818, #1F1F18

Tetradic#1F181F, #1F1B18, #181F18

Tints, shades & saturation

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

Lighter +40%#728491

Lighter +30%#5B6A75

Lighter +20%#455058

Lighter +10%#2E363C

Darker −10%#020202

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#111D26

Less saturated −25%#1C1C1C

Channel breakdown

R24

G28

B31

Red24 (9.4%)

Green28 (11%)

Blue31 (12.2%)

Hue205.71°

Saturation (HSL)12.73%

Lightness10.78%

Dominant channelBlue

Hex per channelR 18 · G 1C · B 1F

Keep nerding

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

#181C1F

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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