#231b49

Color #231b49

A moderately saturated very dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 24.2 Nearest Tailwind class indigo-950 #1e1a4d · ΔE 1.8

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Conversions

HEX

#231b49

RGB

rgb(35, 27, 73)

HSL

hsl(250.4, 46%, 19.6%)

HSV / HSB

hsv(250.4, 63%, 28.6%)

CMYK

cmyk(52.1%, 63%, 0%, 71.4%)

LAB

lab(13.36, 17.78, -27.52)

LCH

lch(13.36, 32.76, 302.87)

OKLCH

oklch(26.1%, 0.0822, 287.27)

HWB

hwb(250.4, 10.6%, 71.4%)

Harmony colors

Complementary

#41491b

Analogous

#1b2a49

#231b49

#3a1b49

Triadic

#231b49

#49231b

#1b4923

Split-complementary

#231b49

#493a1b

#2a491b

Tetradic

#231b49

#491b41

#41491b

#1b4923

Square

#231b49

#491b2a

#41491b

#1b493a

Shades

Color #231b49 mixed toward black.

#1d163d

#171231

#110d24

#0c0918

#06040c

Tints

Color #231b49 mixed toward white.

#3b2d7b

#5340ad

#7a69c8

#a69bda

#d3cded

Tones

Color #231b49 mixed toward gray.

#251f45

#282341

#2a263d

#2d2a3a

#2f2e36

Accessibility

Aa White text on this color

15.86:1

Aa Black text on this color

1.32:1

White text reads better on this background (15.86:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#202041 · ΔE 4.4

Deuteranopia

#20213f · ΔE 5.5

Tritanopia

#233a38 · ΔE 25.1

Achromatopsia

#222222 · ΔE 20.2

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

Code

CSS

background-color: #231b49;

Tailwind (arbitrary value)

bg-[#231b49]

Related colors

Dark Slate Blue #483d8b

Medium Slate Blue #7b68ee

Slate Blue #6a5acd

Medium Purple #9370db

Navy #000080

Lavender #e6e6fa

Frequently asked questions

#231b49 (#231b49) is rgb(35, 27, 73) in RGB.

No, #231b49 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 #231b49, or check how it holds up for accessibility.

Generate a palette → Check contrast