#1f3451

Color #1f3451

A moderately saturated dark blue.

Closest named color Charcoal #36454f · ΔE 14.99 Nearest Tailwind class slate-800 #1d293d · ΔE 4.8

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Conversions

HEX

#1f3451

RGB

rgb(31, 52, 81)

HSL

hsl(214.8, 44.6%, 22%)

HSV / HSB

hsv(214.8, 61.7%, 31.8%)

CMYK

cmyk(61.7%, 35.8%, 0%, 68.2%)

LAB

lab(21.36, 1.71, -20.23)

LCH

lch(21.36, 20.3, 274.83)

OKLCH

oklch(32.2%, 0.0587, 256.7)

HWB

hwb(214.8, 12.2%, 68.2%)

Harmony colors

Complementary

#513c1f

Analogous

#1f4d51

#1f3451

#231f51

Triadic

#1f3451

#511f34

#34511f

Split-complementary

#1f3451

#51231f

#4d511f

Tetradic

#1f3451

#3c1f51

#513c1f

#34511f

Square

#1f3451

#511f4d

#513c1f

#1f5123

Shades

Color #1f3451 mixed toward black.

#1a2b44

#152336

#101a29

#0a111b

#05090e

Tints

Color #1f3451 mixed toward white.

#315381

#4472b1

#6f94c8

#9fb8da

#cfdbed

Tones

Color #1f3451 mixed toward gray.

#23354d

#273549

#2c3645

#303740

#34373c

Accessibility

Aa White text on this color

12.59:1

Aa Black text on this color

1.67:1

White text reads better on this background (12.59:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#292a4b · ΔE 7.8

Deuteranopia

#28274a · ΔE 8.7

Tritanopia

#204645 · ΔE 18.8

Achromatopsia

#333333 · ΔE 14

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

Code

CSS

background-color: #1f3451;

Tailwind (arbitrary value)

bg-[#1f3451]

Related colors

Light Steel Blue #b0c4de

Cornflower Blue #6495ed

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Alice Blue #f0f8ff

Frequently asked questions

#1f3451 (#1f3451) is rgb(31, 52, 81) in RGB.

No, #1f3451 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 #1f3451, or check how it holds up for accessibility.

Generate a palette → Check contrast