#031f4b

Color #031f4b

A vivid, highly saturated very dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 27.21 Nearest Tailwind class blue-950 #162456 · ΔE 2.9

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

Conversions

HEX

#031f4b

RGB

rgb(3, 31, 75)

HSL

hsl(216.7, 92.3%, 15.3%)

HSV / HSB

hsv(216.7, 96%, 29.4%)

CMYK

cmyk(96%, 58.7%, 0%, 70.6%)

LAB

lab(12.65, 9.7, -30.15)

LCH

lch(12.65, 31.67, 287.83)

OKLCH

oklch(25%, 0.0886, 259.01)

HWB

hwb(216.7, 1.2%, 70.6%)

Harmony colors

Complementary

#4b2f03

Analogous

#03434b

#031f4b

#0b034b

Triadic

#031f4b

#4b031f

#1f4b03

Split-complementary

#031f4b

#4b0b03

#434b03

Tetradic

#031f4b

#2f034b

#4b2f03

#1f4b03

Square

#031f4b

#4b0343

#4b2f03

#034b0b

Shades

Color #031f4b mixed toward black.

#031a3f

#021532

#020f26

#010a19

#01050d

Tints

Color #031f4b mixed toward white.

#063c90

#0958d5

#2f7df7

#75a8f9

#bad4fc

Tones

Color #031f4b mixed toward gray.

#092045

#0f223f

#152339

#1b2433

#21262d

Accessibility

Aa White text on this color

16.14:1

Aa Black text on this color

1.3:1

White text reads better on this background (16.14:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#131343 · ΔE 6.1

Deuteranopia

#110f41 · ΔE 7.1

Tritanopia

#053c3b · ΔE 24.7

Achromatopsia

#212121 · ΔE 19

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

Code

CSS

background-color: #031f4b;

Tailwind (arbitrary value)

bg-[#031f4b]

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

#031f4b (#031f4b) is rgb(3, 31, 75) in RGB.

No, #031f4b 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 #031f4b, or check how it holds up for accessibility.

Generate a palette → Check contrast