#1b1237

Color #1b1237

A moderately saturated very dark blue.

Closest named color Black #000000 · ΔE 28.89 Nearest Tailwind class indigo-950 #1e1a4d · ΔE 5.1

Open in Palette generator Color wheel Color mixer Contrast checker Blindness simulator Gradient

Conversions

HEX

#1b1237

RGB

rgb(27, 18, 55)

HSL

hsl(254.6, 50.7%, 14.3%)

HSV / HSB

hsv(254.6, 67.3%, 21.6%)

CMYK

cmyk(50.9%, 67.3%, 0%, 78.4%)

LAB

lab(8.49, 15.74, -22.69)

LCH

lch(8.49, 27.61, 304.75)

OKLCH

oklch(21.8%, 0.0691, 290.77)

HWB

hwb(254.6, 7.1%, 78.4%)

Harmony colors

Complementary

#2e3712

Analogous

#121b37

#1b1237

#2d1237

Triadic

#1b1237

#371b12

#12371b

Split-complementary

#1b1237

#372d12

#1b3712

Tetradic

#1b1237

#37122e

#2e3712

#12371b

Square

#1b1237

#37121b

#2e3712

#12372d

Shades

Color #1b1237 mixed toward black.

#160f2e

#120c25

#0d091b

#090612

#040309

Tints

Color #1b1237 mixed toward white.

#36246e

#5136a5

#755ac9

#a391db

#d1c8ed

Tones

Color #1b1237 mixed toward gray.

#1d1534

#1e1831

#201b2e

#211e2b

#232128

Accessibility

Aa White text on this color

17.67:1

Aa Black text on this color

1.19:1

White text reads better on this background (17.67:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#171731 · ΔE 5

Deuteranopia

#18192f · ΔE 6.9

Tritanopia

#1b2b2a · ΔE 23.1

Achromatopsia

#181818 · ΔE 18.6

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

Code

CSS

background-color: #1b1237;

Tailwind (arbitrary value)

bg-[#1b1237]

Related colors

Medium Purple #9370db

Dark Slate Blue #483d8b

Medium Slate Blue #7b68ee

Slate Blue #6a5acd

Navy #000080

Lavender #e6e6fa

Frequently asked questions

#1b1237 (#1b1237) is rgb(27, 18, 55) in RGB.

No, #1b1237 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.

Try it → Accessibility

Contrast Checker

Check the WCAG contrast ratio between any two colors, live, with AA/AAA pass-fail results.

Try it → Generators

Palette Generator

Generate complementary, analogous, triadic, split-complementary, tetradic, square, and monochromatic palettes from any base color.

Try it →

Build something with this color

Generate a full palette from #1b1237, or check how it holds up for accessibility.

Generate a palette → Check contrast