#181f2e

Color #181f2e

A muted very dark blue.

Closest named color Black #000000 · ΔE 16.2 Nearest Tailwind class gray-900 #101828 · ΔE 2.3

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

Conversions

HEX

#181f2e

RGB

rgb(24, 31, 46)

HSL

hsl(220.9, 31.4%, 13.7%)

HSV / HSB

hsv(220.9, 47.8%, 18%)

CMYK

cmyk(47.8%, 32.6%, 0%, 82%)

LAB

lab(11.77, 1.7, -11)

LCH

lch(11.77, 11.13, 278.79)

OKLCH

oklch(24%, 0.0307, 264.96)

HWB

hwb(220.9, 9.4%, 82%)

Harmony colors

Complementary

#2e2718

Analogous

#182a2e

#181f2e

#1c182e

Triadic

#181f2e

#2e181f

#1f2e18

Split-complementary

#181f2e

#2e1c18

#2a2e18

Tetradic

#181f2e

#27182e

#2e2718

#1f2e18

Square

#181f2e

#2e182a

#2e2718

#182e1c

Shades

Color #181f2e mixed toward black.

#141a26

#10151f

#0c0f17

#080a0f

#040508

Tints

Color #181f2e mixed toward white.

#313f5e

#4a608e

#6e84b4

#9fadcd

#cfd6e6

Tones

Color #181f2e mixed toward gray.

#1a202c

#1c202a

#1d2128

#1f2227

#212225

Accessibility

Aa White text on this color

16.48:1

Aa Black text on this color

1.27:1

White text reads better on this background (16.48:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#1b1b2b · ΔE 4.1

Deuteranopia

#1b1a2a · ΔE 4.7

Tritanopia

#182828 · ΔE 12.3

Achromatopsia

#1f1f1f · ΔE 9

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

Code

CSS

background-color: #181f2e;

Tailwind (arbitrary value)

bg-[#181f2e]

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

#181f2e (#181f2e) is rgb(24, 31, 46) in RGB.

No, #181f2e 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.

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 #181f2e, or check how it holds up for accessibility.

Generate a palette → Check contrast