#121b3a

Color #121b3a

A moderately saturated very dark blue.

Closest named color Charcoal #36454f · ΔE 24.74 Nearest Tailwind class slate-900 #0f172b · ΔE 4.6

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Conversions

HEX

#121b3a

RGB

rgb(18, 27, 58)

HSL

hsl(226.5, 52.6%, 14.9%)

HSV / HSB

hsv(226.5, 69%, 22.7%)

CMYK

cmyk(69%, 53.4%, 0%, 77.3%)

LAB

lab(10.69, 7.67, -21.36)

LCH

lch(10.69, 22.7, 289.75)

OKLCH

oklch(23.3%, 0.061, 269.06)

HWB

hwb(226.5, 7.1%, 77.3%)

Harmony colors

Complementary

#3a3112

Analogous

#122f3a

#121b3a

#1d123a

Triadic

#121b3a

#3a121b

#1b3a12

Split-complementary

#121b3a

#3a1d12

#2f3a12

Tetradic

#121b3a

#31123a

#3a3112

#1b3a12

Square

#121b3a

#3a122f

#3a3112

#123a1d

Shades

Color #121b3a mixed toward black.

#0f1730

#0c1227

#090e1d

#060913

#03050a

Tints

Color #121b3a mixed toward white.

#233571

#344ea8

#5973cc

#91a2dd

#c8d0ee

Tones

Color #121b3a mixed toward gray.

#151d37

#191f33

#1c2030

#1f222d

#232429

Accessibility

Aa White text on this color

16.89:1

Aa Black text on this color

1.24:1

White text reads better on this background (16.89:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#161634 · ΔE 3.2

Deuteranopia

#161533 · ΔE 3.6

Tritanopia

#132f2e · ΔE 21.7

Achromatopsia

#1d1d1d · ΔE 15.6

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

Code

CSS

background-color: #121b3a;

Tailwind (arbitrary value)

bg-[#121b3a]

Related colors

Royal Blue #4169e1

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Frequently asked questions

#121b3a (#121b3a) is rgb(18, 27, 58) in RGB.

No, #121b3a 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 #121b3a, or check how it holds up for accessibility.

Generate a palette → Check contrast