#040c2a

Color #040c2a

A vivid, highly saturated very dark blue.

Closest named color Black #000000 · ΔE 21.68 Nearest Tailwind class slate-900 #0f172b · ΔE 4.3

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

Conversions

HEX

#040c2a

RGB

rgb(4, 12, 42)

HSL

hsl(227.4, 82.6%, 9%)

HSV / HSB

hsv(227.4, 90.5%, 16.5%)

CMYK

cmyk(90.5%, 71.4%, 0%, 83.5%)

LAB

lab(4.12, 6.8, -20.17)

LCH

lch(4.12, 21.29, 288.63)

OKLCH

oklch(16.9%, 0.0627, 266.16)

HWB

hwb(227.4, 1.6%, 83.5%)

Harmony colors

Complementary

#2a2204

Analogous

#041f2a

#040c2a

#0f042a

Triadic

#040c2a

#2a040c

#0c2a04

Split-complementary

#040c2a

#2a0f04

#1f2a04

Tetradic

#040c2a

#22042a

#2a2204

#0c2a04

Square

#040c2a

#2a041f

#2a2204

#042a0f

Shades

Color #040c2a mixed toward black.

#030a23

#03081c

#020615

#01040e

#010207

Tints

Color #040c2a mixed toward white.

#0b2071

#1134b7

#2b53eb

#728df2

#b8c6f8

Tones

Color #040c2a mixed toward gray.

#070e27

#0a1024

#0d1120

#11131d

#14151a

Accessibility

Aa White text on this color

19.25:1

Aa Black text on this color

1.09:1

White text reads better on this background (19.25:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#080825 · ΔE 2.1

Deuteranopia

#070624 · ΔE 2.3

Tritanopia

#04201f · ΔE 21.1

Achromatopsia

#0e0e0e · ΔE 14.9

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

Code

CSS

background-color: #040c2a;

Tailwind (arbitrary value)

bg-[#040c2a]

Related colors

Royal Blue #4169e1

Cornflower Blue #6495ed

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Frequently asked questions

#040c2a (#040c2a) is rgb(4, 12, 42) in RGB.

No, #040c2a 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 #040c2a, or check how it holds up for accessibility.

Generate a palette → Check contrast