#121828

Color #121828

A muted very dark blue.

Closest named color Black #000000 · ΔE 14.77 Nearest Tailwind class gray-900 #101828 · ΔE 1

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Conversions

HEX

#121828

RGB

rgb(18, 24, 40)

HSL

hsl(223.6, 37.9%, 11.4%)

HSV / HSB

hsv(223.6, 55%, 15.7%)

CMYK

cmyk(55%, 40%, 0%, 84.3%)

LAB

lab(8.44, 2.71, -11.81)

LCH

lch(8.44, 12.12, 282.92)

OKLCH

oklch(21.2%, 0.0331, 267.92)

HWB

hwb(223.6, 7.1%, 84.3%)

Harmony colors

Complementary

#282212

Analogous

#122328

#121828

#171228

Triadic

#121828

#281218

#182812

Split-complementary

#121828

#281712

#232812

Tetradic

#121828

#221228

#282212

#182812

Square

#121828

#281223

#282212

#122817

Shades

Color #121828 mixed toward black.

#0f1421

#0c101b

#090c14

#06080d

#030407

Tints

Color #121828 mixed toward white.

#29375c

#415690

#637bb9

#97a7d0

#cbd3e8

Tones

Color #121828 mixed toward gray.

#141926

#161a24

#181b23

#191b21

#1b1c1f

Accessibility

Aa White text on this color

17.69:1

Aa Black text on this color

1.19:1

White text reads better on this background (17.69:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#151525 · ΔE 3.1

Deuteranopia

#141424 · ΔE 3.1

Tritanopia

#122221 · ΔE 14.1

Achromatopsia

#181818 · ΔE 9.7

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

Code

CSS

background-color: #121828;

Tailwind (arbitrary value)

bg-[#121828]

Related colors

Royal Blue #4169e1

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Frequently asked questions

#121828 (#121828) is rgb(18, 24, 40) in RGB.

No, #121828 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.

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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 #121828, or check how it holds up for accessibility.

Generate a palette → Check contrast