#121d36

Color #121d36

A moderately saturated very dark blue.

Closest named color Charcoal #36454f · ΔE 21.37 Nearest Tailwind class slate-900 #0f172b · ΔE 2.7

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Conversions

HEX

#121d36

RGB

rgb(18, 29, 54)

HSL

hsl(221.7, 50%, 14.1%)

HSV / HSB

hsv(221.7, 66.7%, 21.2%)

CMYK

cmyk(66.7%, 46.3%, 0%, 78.8%)

LAB

lab(11.09, 4.46, -17.86)

LCH

lch(11.09, 18.41, 284.02)

OKLCH

oklch(23.5%, 0.0509, 264.82)

HWB

hwb(221.7, 7.1%, 78.8%)

Harmony colors

Complementary

#362b12

Analogous

#122f36

#121d36

#191236

Triadic

#121d36

#36121d

#1d3612

Split-complementary

#121d36

#361912

#2f3612

Tetradic

#121d36

#2b1236

#362b12

#1d3612

Square

#121d36

#36122f

#362b12

#123619

Shades

Color #121d36 mixed toward black.

#0f182d

#0c1324

#090e1b

#060a12

#030509

Tints

Color #121d36 mixed toward white.

#243a6d

#3658a3

#5b7cc8

#91a8da

#c8d3ed

Tones

Color #121d36 mixed toward gray.

#151e33

#181f30

#1b202d

#1e222a

#212327

Accessibility

Aa White text on this color

16.74:1

Aa Black text on this color

1.25:1

White text reads better on this background (16.74:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#171731 · ΔE 4.7

Deuteranopia

#171630 · ΔE 5.1

Tritanopia

#132d2c · ΔE 18.9

Achromatopsia

#1e1e1e · ΔE 13.3

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

Code

CSS

background-color: #121d36;

Tailwind (arbitrary value)

bg-[#121d36]

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

#121d36 (#121d36) is rgb(18, 29, 54) in RGB.

No, #121d36 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 #121d36, or check how it holds up for accessibility.

Generate a palette → Check contrast