#042357

Color #042357

A vivid, highly saturated very dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 22.29 Nearest Tailwind class blue-950 #162456 · ΔE 2.2

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

Conversions

HEX

#042357

RGB

rgb(4, 35, 87)

HSL

hsl(217.6, 91.2%, 17.8%)

HSV / HSB

hsv(217.6, 95.4%, 34.1%)

CMYK

cmyk(95.4%, 59.8%, 0%, 65.9%)

LAB

lab(15.04, 12.3, -34.44)

LCH

lch(15.04, 36.57, 289.65)

OKLCH

oklch(27.2%, 0.101, 260.14)

HWB

hwb(217.6, 1.6%, 65.9%)

Harmony colors

Complementary

#573804

Analogous

#044c57

#042357

#0e0457

Triadic

#042357

#570423

#235704

Split-complementary

#042357

#570e04

#4c5704

Tetradic

#042357

#380457

#573804

#235704

Square

#042357

#57044c

#573804

#04570e

Shades

Color #042357 mixed toward black.

#031d48

#03173a

#02112b

#010c1d

#01060e

Tints

Color #042357 mixed toward white.

#073e9a

#0a59dc

#377ef6

#79a9f9

#bcd4fc

Tones

Color #042357 mixed toward gray.

#0b2550

#122649

#192842

#202a3b

#262c34

Accessibility

Aa White text on this color

15.18:1

Aa Black text on this color

1.38:1

White text reads better on this background (15.18:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#16164e · ΔE 6.1

Deuteranopia

#14124c · ΔE 7.1

Tritanopia

#074644 · ΔE 26.6

Achromatopsia

#262626 · ΔE 20.5

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

Code

CSS

background-color: #042357;

Tailwind (arbitrary value)

bg-[#042357]

Related colors

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Royal Blue #4169e1

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Frequently asked questions

#042357 (#042357) is rgb(4, 35, 87) in RGB.

No, #042357 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 #042357, or check how it holds up for accessibility.

Generate a palette → Check contrast