#042457

Color #042457

A vivid, highly saturated very dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 22.73 Nearest Tailwind class blue-950 #162456 · ΔE 2.3

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

Conversions

HEX

#042457

RGB

rgb(4, 36, 87)

HSL

hsl(216.9, 91.2%, 17.8%)

HSV / HSB

hsv(216.9, 95.4%, 34.1%)

CMYK

cmyk(95.4%, 58.6%, 0%, 65.9%)

LAB

lab(15.36, 11.54, -33.92)

LCH

lch(15.36, 35.83, 288.79)

OKLCH

oklch(27.4%, 0.0996, 259.59)

HWB

hwb(216.9, 1.6%, 65.9%)

Harmony colors

Complementary

#573704

Analogous

#044d57

#042457

#0e0457

Triadic

#042457

#570424

#245704

Split-complementary

#042457

#570e04

#4d5704

Tetradic

#042457

#370457

#573704

#245704

Square

#042457

#57044d

#573704

#04570e

Shades

Color #042457 mixed toward black.

#031e48

#03183a

#02122b

#010c1d

#01060e

Tints

Color #042457 mixed toward white.

#073f9a

#0a5bdc

#3780f6

#79aaf9

#bcd5fc

Tones

Color #042457 mixed toward gray.

#0b2550

#122749

#192942

#202a3b

#262c34

Accessibility

Aa White text on this color

15.05:1

Aa Black text on this color

1.4:1

White text reads better on this background (15.05:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#17174e · ΔE 6.3

Deuteranopia

#15124c · ΔE 7.6

Tritanopia

#074644 · ΔE 26.3

Achromatopsia

#262626 · ΔE 20.3

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

Code

CSS

background-color: #042457;

Tailwind (arbitrary value)

bg-[#042457]

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

#042457 (#042457) is rgb(4, 36, 87) in RGB.

No, #042457 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 #042457, or check how it holds up for accessibility.

Generate a palette → Check contrast