#231d52

Color #231d52

A moderately saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 20.33 Nearest Tailwind class indigo-950 #1e1a4d · ΔE 1.2

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Conversions

HEX

#231d52

RGB

rgb(35, 29, 82)

HSL

hsl(246.8, 47.7%, 21.8%)

HSV / HSB

hsv(246.8, 64.6%, 32.2%)

CMYK

cmyk(57.3%, 64.6%, 0%, 67.8%)

LAB

lab(14.65, 19.59, -31.6)

LCH

lch(14.65, 37.18, 301.8)

OKLCH

oklch(27.2%, 0.0931, 283.48)

HWB

hwb(246.8, 11.4%, 67.8%)

Harmony colors

Complementary

#4c521d

Analogous

#1d3252

#231d52

#3e1d52

Triadic

#231d52

#52231d

#1d5223

Split-complementary

#231d52

#523e1d

#32521d

Tetradic

#231d52

#521d4c

#4c521d

#1d5223

Square

#231d52

#521d32

#4c521d

#1d523e

Shades

Color #231d52 mixed toward black.

#1d1844

#171337

#120f29

#0c0a1b

#06050e

Tints

Color #231d52 mixed toward white.

#382e83

#4d40b4

#776ccb

#a49ddc

#d2ceee

Tones

Color #231d52 mixed toward gray.

#27214e

#2a2649

#2d2a45

#312f40

#34333c

Accessibility

Aa White text on this color

15.34:1

Aa Black text on this color

1.37:1

White text reads better on this background (15.34:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#212049 · ΔE 3.2

Deuteranopia

#212147 · ΔE 4.1

Tritanopia

#23413f · ΔE 26.1

Achromatopsia

#252525 · ΔE 21.3

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

Code

CSS

background-color: #231d52;

Tailwind (arbitrary value)

bg-[#231d52]

Related colors

Slate Blue #6a5acd

Dark Slate Blue #483d8b

Medium Slate Blue #7b68ee

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Frequently asked questions

#231d52 (#231d52) is rgb(35, 29, 82) in RGB.

No, #231d52 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 #231d52, or check how it holds up for accessibility.

Generate a palette → Check contrast