#231b79

Color #231b79

A moderately saturated dark blue.

Closest named color Midnight Blue #191970 · ΔE 4.33 Nearest Tailwind class indigo-900 #312c85 · ΔE 4.6

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Conversions

HEX

#231b79

RGB

rgb(35, 27, 121)

HSL

hsl(245.1, 63.5%, 29%)

HSV / HSB

hsv(245.1, 77.7%, 47.5%)

CMYK

cmyk(71.1%, 77.7%, 0%, 52.5%)

LAB

lab(18.01, 34.74, -51.79)

LCH

lch(18.01, 62.36, 303.85)

OKLCH

oklch(30.8%, 0.1507, 276.67)

HWB

hwb(245.1, 10.6%, 52.5%)

Harmony colors

Complementary

#71791b

Analogous

#1b4279

#231b79

#521b79

Triadic

#231b79

#79231b

#1b7923

Split-complementary

#231b79

#79521b

#42791b

Tetradic

#231b79

#791b71

#71791b

#1b7923

Square

#231b79

#791b42

#71791b

#1b7952

Shades

Color #231b79 mixed toward black.

#1d1665

#171251

#110d3c

#0c0928

#060414

Tints

Color #231b79 mixed toward white.

#3126aa

#473ad3

#756bde

#a39ce9

#d1cef4

Tones

Color #231b79 mixed toward gray.

#292371

#302b69

#363261

#3d3a5a

#434252

Accessibility

Aa White text on this color

13.96:1

Aa Black text on this color

1.5:1

White text reads better on this background (13.96:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#20206b · ΔE 3.2

Deuteranopia

#202168 · ΔE 4

Tritanopia

#235e5b · ΔE 33.3

Achromatopsia

#2c2c2c · ΔE 26.1

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

Code

CSS

background-color: #231b79;

Tailwind (arbitrary value)

bg-[#231b79]

Related colors

Slate Blue #6a5acd

Dark Slate Blue #483d8b

Medium Slate Blue #7b68ee

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Frequently asked questions

#231b79 (#231b79) is rgb(35, 27, 121) in RGB.

No, #231b79 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 #231b79, or check how it holds up for accessibility.

Generate a palette → Check contrast