#181831

Color #181831

A muted very dark blue.

Closest named color Black #000000 · ΔE 20.84 Nearest Tailwind class slate-900 #0f172b · ΔE 4.6

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

Conversions

HEX

#181831

RGB

rgb(24, 24, 49)

HSL

hsl(240, 34.2%, 14.3%)

HSV / HSB

hsv(240, 51%, 19.2%)

CMYK

cmyk(51%, 51%, 0%, 80.8%)

LAB

lab(9.55, 8.11, -16.65)

LCH

lch(9.55, 18.52, 295.97)

OKLCH

oklch(22.3%, 0.048, 281.78)

HWB

hwb(240, 9.4%, 80.8%)

Harmony colors

Complementary

#313118

Analogous

#182431

#181831

#241831

Triadic

#181831

#311818

#183118

Split-complementary

#181831

#312418

#243118

Tetradic

#181831

#311831

#313118

#183118

Square

#181831

#311824

#313118

#183124

Shades

Color #181831 mixed toward black.

#141429

#101021

#0c0c18

#080810

#040408

Tints

Color #181831 mixed toward white.

#303062

#484893

#6c6cb7

#9d9dcf

#cecee7

Tones

Color #181831 mixed toward gray.

#1a1a2f

#1c1c2d

#1e1e2b

#202029

#222227

Accessibility

Aa White text on this color

17.3:1

Aa Black text on this color

1.21:1

White text reads better on this background (17.3:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#18182c · ΔE 2.2

Deuteranopia

#18182b · ΔE 2.7

Tritanopia

#182827 · ΔE 19.4

Achromatopsia

#1b1b1b · ΔE 14.1

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

Code

CSS

background-color: #181831;

Tailwind (arbitrary value)

bg-[#181831]

Related colors

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Medium Blue #0000cd

Frequently asked questions

#181831 (#181831) is rgb(24, 24, 49) in RGB.

No, #181831 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.

Try it → Accessibility

Contrast Checker

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

Try it → Generators

Palette Generator

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

Try it →

Build something with this color

Generate a full palette from #181831, or check how it holds up for accessibility.

Generate a palette → Check contrast