#04255b

Color #04255b

A vivid, highly saturated very dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 21.05 Nearest Tailwind class blue-950 #162456 · ΔE 2.5

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

Conversions

HEX

#04255b

RGB

rgb(4, 37, 91)

HSL

hsl(217.2, 91.6%, 18.6%)

HSV / HSB

hsv(217.2, 95.6%, 35.7%)

CMYK

cmyk(95.6%, 59.3%, 0%, 64.3%)

LAB

lab(16.02, 12.61, -35.51)

LCH

lch(16.02, 37.68, 289.55)

OKLCH

oklch(28%, 0.1043, 259.95)

HWB

hwb(217.2, 1.6%, 64.3%)

Harmony colors

Complementary

#5b3a04

Analogous

#04505b

#04255b

#0e045b

Triadic

#04255b

#5b0425

#255b04

Split-complementary

#04255b

#5b0e04

#505b04

Tetradic

#04255b

#3a045b

#5b3a04

#255b04

Square

#04255b

#5b0450

#5b3a04

#045b0e

Shades

Color #04255b mixed toward black.

#031f4c

#03193d

#02132d

#010c1e

#01060f

Tints

Color #04255b mixed toward white.

#07409d

#0a5bdf

#3880f6

#7aabf9

#bdd5fc

Tones

Color #04255b mixed toward gray.

#0b2754

#12284c

#1a2a45

#212c3e

#282e37

Accessibility

Aa White text on this color

14.78:1

Aa Black text on this color

1.42:1

White text reads better on this background (14.78:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#171852 · ΔE 6

Deuteranopia

#15134f · ΔE 7.4

Tritanopia

#074947 · ΔE 26.9

Achromatopsia

#282828 · ΔE 20.8

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

Code

CSS

background-color: #04255b;

Tailwind (arbitrary value)

bg-[#04255b]

Related colors

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Royal Blue #4169e1

Frequently asked questions

#04255b (#04255b) is rgb(4, 37, 91) in RGB.

No, #04255b 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 #04255b, or check how it holds up for accessibility.

Generate a palette → Check contrast