#231d3b

Color #231d3b

A muted very dark blue.

Closest named color Charcoal #36454f · ΔE 23.79 Nearest Tailwind class indigo-950 #1e1a4d · ΔE 6.4

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Conversions

HEX

#231d3b

RGB

rgb(35, 29, 59)

HSL

hsl(252, 34.1%, 17.3%)

HSV / HSB

hsv(252, 50.8%, 23.1%)

CMYK

cmyk(40.7%, 50.8%, 0%, 76.9%)

LAB

lab(12.93, 11.5, -18.41)

LCH

lch(12.93, 21.71, 301.99)

OKLCH

oklch(25.4%, 0.0555, 291.11)

HWB

hwb(252, 11.4%, 76.9%)

Harmony colors

Complementary

#353b1d

Analogous

#1d263b

#231d3b

#321d3b

Triadic

#231d3b

#3b231d

#1d3b23

Split-complementary

#231d3b

#3b321d

#263b1d

Tetradic

#231d3b

#3b1d35

#353b1d

#1d3b23

Square

#231d3b

#3b1d26

#353b1d

#1d3b32

Shades

Color #231d3b mixed toward black.

#1d1831

#171327

#120f1e

#0c0a14

#06050a

Tints

Color #231d3b mixed toward white.

#3f346a

#5b4b99

#8072ba

#aaa1d1

#d5d0e8

Tones

Color #231d3b mixed toward gray.

#252039

#262236

#282534

#292731

#2b2a2f

Accessibility

Aa White text on this color

16.03:1

Aa Black text on this color

1.31:1

White text reads better on this background (16.03:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#212035 · ΔE 4.4

Deuteranopia

#212134 · ΔE 5.6

Tritanopia

#23302f · ΔE 20.8

Achromatopsia

#212121 · ΔE 16

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

Code

CSS

background-color: #231d3b;

Tailwind (arbitrary value)

bg-[#231d3b]

Related colors

Dark Slate Blue #483d8b

Medium Slate Blue #7b68ee

Slate Blue #6a5acd

Medium Purple #9370db

Navy #000080

Lavender #e6e6fa

Frequently asked questions

#231d3b (#231d3b) is rgb(35, 29, 59) in RGB.

No, #231d3b 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 #231d3b, or check how it holds up for accessibility.

Generate a palette → Check contrast