#181c23

Color #181c23

A muted very dark blue.

Closest named color Black #000000 · ΔE 11.5 Nearest Tailwind class zinc-900 #18181b · ΔE 3.2

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Conversions

HEX

#181c23

RGB

rgb(24, 28, 35)

HSL

hsl(218.2, 18.6%, 11.6%)

HSV / HSB

hsv(218.2, 31.4%, 13.7%)

CMYK

cmyk(31.4%, 20%, 0%, 86.3%)

LAB

lab(10.15, 0.21, -5.41)

LCH

lch(10.15, 5.41, 272.22)

OKLCH

oklch(22.6%, 0.015, 261.54)

HWB

hwb(218.2, 9.4%, 86.3%)

Harmony colors

Complementary

#231f18

Analogous

#182223

#181c23

#1a1823

Triadic

#181c23

#23181c

#1c2318

Split-complementary

#181c23

#231a18

#222318

Tetradic

#181c23

#1f1823

#231f18

#1c2318

Square

#181c23

#231822

#231f18

#18231a

Shades

Color #181c23 mixed toward black.

#14171d

#101317

#0c0e12

#08090c

#040506

Tints

Color #181c23 mixed toward white.

#374050

#55637c

#7989a3

#a6b0c2

#d2d8e0

Tones

Color #181c23 mixed toward gray.

#191c22

#1a1d21

#1b1d20

#1c1d1f

#1d1d1e

Accessibility

Aa White text on this color

17.08:1

Aa Black text on this color

1.23:1

White text reads better on this background (17.08:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#1a1a21 · ΔE 2.6

Deuteranopia

#1a1921 · ΔE 3.6

Tritanopia

#182020 · ΔE 6.3

Achromatopsia

#1c1c1c · ΔE 4.8

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

Code

CSS

background-color: #181c23;

Tailwind (arbitrary value)

bg-[#181c23]

Related colors

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Royal Blue #4169e1

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Frequently asked questions

#181c23 (#181c23) is rgb(24, 28, 35) in RGB.

No, #181c23 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 #181c23, or check how it holds up for accessibility.

Generate a palette → Check contrast