#183d5e

Color #183d5e

A moderately saturated dark blue.

Closest named color Charcoal #36454f · ΔE 16.1 Nearest Tailwind class sky-950 #052f4a · ΔE 4.9

Open in Palette generator Color wheel Color mixer Contrast checker Blindness simulator Gradient

Conversions

HEX

#183d5e

RGB

rgb(24, 61, 94)

HSL

hsl(208.3, 59.3%, 23.1%)

HSV / HSB

hsv(208.3, 74.5%, 36.9%)

CMYK

cmyk(74.5%, 35.1%, 0%, 63.1%)

LAB

lab(24.76, -0.85, -23.46)

LCH

lch(24.76, 23.48, 267.92)

OKLCH

oklch(35.1%, 0.0716, 248.27)

HWB

hwb(208.3, 9.4%, 63.1%)

Harmony colors

Complementary

#5e3918

Analogous

#185e5c

#183d5e

#181a5e

Triadic

#183d5e

#5e183d

#3d5e18

Split-complementary

#183d5e

#5e181a

#5e5c18

Tetradic

#183d5e

#39185e

#5e3918

#3d5e18

Square

#183d5e

#5c185e

#5e3918

#1a5e18

Shades

Color #183d5e mixed toward black.

#14334e

#10293f

#0c1e2f

#08141f

#040a10

Tints

Color #183d5e mixed toward white.

#255f92

#3380c6

#63a0d7

#97c0e4

#cbdff2

Tones

Color #183d5e mixed toward gray.

#1e3d58

#243c52

#293c4c

#2f3c47

#353b41

Accessibility

Aa White text on this color

11.24:1

Aa Black text on this color

1.87:1

White text reads better on this background (11.24:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#2c2d57 · ΔE 11

Deuteranopia

#2a2756 · ΔE 12.2

Tritanopia

#1b5250 · ΔE 19.6

Achromatopsia

#3b3b3b · ΔE 15.4

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

Code

CSS

background-color: #183d5e;

Tailwind (arbitrary value)

bg-[#183d5e]

Related colors

Alice Blue #f0f8ff

Steel Blue #4682b4

Dodger Blue #1e90ff

Light Slate Gray #778899

Slate Gray #708090

Charcoal #36454f

Frequently asked questions

#183d5e (#183d5e) is rgb(24, 61, 94) in RGB.

No, #183d5e is not web-safe. The nearest web-safe colors are among its tones and shades below.

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 #183d5e, or check how it holds up for accessibility.

Generate a palette → Check contrast