#181f2f

Color #181f2f

A muted very dark blue.

Closest named color Black #000000 · ΔE 16.72 Nearest Tailwind class gray-900 #101828 · ΔE 2.2

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Conversions

HEX

#181f2f

RGB

rgb(24, 31, 47)

HSL

hsl(221.7, 32.4%, 13.9%)

HSV / HSB

hsv(221.7, 48.9%, 18.4%)

CMYK

cmyk(48.9%, 34%, 0%, 81.6%)

LAB

lab(11.82, 2.06, -11.64)

LCH

lch(11.82, 11.82, 280.04)

OKLCH

oklch(24.1%, 0.0326, 265.78)

HWB

hwb(221.7, 9.4%, 81.6%)

Harmony colors

Complementary

#2f2818

Analogous

#182a2f

#181f2f

#1c182f

Triadic

#181f2f

#2f181f

#1f2f18

Split-complementary

#181f2f

#2f1c18

#2a2f18

Tetradic

#181f2f

#28182f

#2f2818

#1f2f18

Square

#181f2f

#2f182a

#2f2818

#182f1c

Shades

Color #181f2f mixed toward black.

#141a27

#10151f

#0c0f17

#080a10

#040508

Tints

Color #181f2f mixed toward white.

#313f5f

#495f90

#6e83b5

#9eadce

#cfd6e6

Tones

Color #181f2f mixed toward gray.

#1a202d

#1c202b

#1e2129

#202227

#222325

Accessibility

Aa White text on this color

16.46:1

Aa Black text on this color

1.28:1

White text reads better on this background (16.46:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#1b1b2c · ΔE 4

Deuteranopia

#1b1a2b · ΔE 4.6

Tritanopia

#182928 · ΔE 13.7

Achromatopsia

#1f1f1f · ΔE 9.5

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

Code

CSS

background-color: #181f2f;

Tailwind (arbitrary value)

bg-[#181f2f]

Related colors

Cornflower Blue #6495ed

Royal Blue #4169e1

Light Steel Blue #b0c4de

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Frequently asked questions

#181f2f (#181f2f) is rgb(24, 31, 47) in RGB.

No, #181f2f 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 #181f2f, or check how it holds up for accessibility.

Generate a palette → Check contrast