#18313c

Color #18313c

A moderately saturated very dark cyan.

Closest named color Charcoal #36454f · ΔE 10.07 Nearest Tailwind class cyan-950 #053345 · ΔE 3.5

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Conversions

HEX

#18313c

RGB

rgb(24, 49, 60)

HSL

hsl(198.3, 42.9%, 16.5%)

HSV / HSB

hsv(198.3, 60%, 23.5%)

CMYK

cmyk(60%, 18.3%, 0%, 76.5%)

LAB

lab(18.87, -5.89, -9.92)

LCH

lch(18.87, 11.54, 239.3)

OKLCH

oklch(29.8%, 0.0368, 228.3)

HWB

hwb(198.3, 9.4%, 76.5%)

Harmony colors

Complementary

#3c2318

Analogous

#183c35

#18313c

#181f3c

Triadic

#18313c

#3c1831

#313c18

Split-complementary

#18313c

#3c181f

#3c3518

Tetradic

#18313c

#23183c

#3c2318

#313c18

Square

#18313c

#35183c

#3c2318

#1f3c18

Shades

Color #18313c mixed toward black.

#142932

#102128

#0c191e

#081014

#04080a

Tints

Color #18313c mixed toward white.

#2c5b6f

#4184a2

#67a6c2

#9ac4d6

#cce1eb

Tones

Color #18313c mixed toward gray.

#1b3039

#1e2f36

#212e33

#242c30

#272b2d

Accessibility

Aa White text on this color

13.61:1

Aa Black text on this color

1.54:1

White text reads better on this background (13.61:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#25253a · ΔE 14.7

Deuteranopia

#242239 · ΔE 16.3

Tritanopia

#1a3837 · ΔE 8.4

Achromatopsia

#2e2e2e · ΔE 10.2

Left half is the original, right half is the simulated appearance. See all 8 vision types →

Code

CSS

background-color: #18313c;

Tailwind (arbitrary value)

bg-[#18313c]

Related colors

Sky Blue #87ceeb

Deep Sky Blue #00bfff

Light Blue #add8e6

Light Sky Blue #87cefa

Charcoal #36454f

Steel Blue #4682b4

Frequently asked questions

#18313c (#18313c) is rgb(24, 49, 60) in RGB.

No, #18313c is not one of the 216 web-safe colors — for that, every RGB channel would have to be a multiple of 51.

Related tools

Colors

HEX to RGB Converter

Convert any HEX color code to its RGB and HSL equivalents, live, with copy-to-clipboard values.

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Contrast Checker

Check the WCAG contrast ratio between any two colors, live, with AA/AAA pass-fail results.

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Palette Generator

Generate complementary, analogous, triadic, split-complementary, tetradic, square, and monochromatic palettes from any base color.

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Build something with this color

Generate a full palette from #18313c, or check how it holds up for accessibility.

Generate a palette → Check contrast