#1b1337

Color #1b1337

A moderately saturated very dark blue.

Closest named color Black #000000 · ΔE 28.22 Nearest Tailwind class indigo-950 #1e1a4d · ΔE 5.1

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Conversions

HEX

#1b1337

RGB

rgb(27, 19, 55)

HSL

hsl(253.3, 48.6%, 14.5%)

HSV / HSB

hsv(253.3, 65.5%, 21.6%)

CMYK

cmyk(50.9%, 65.5%, 0%, 78.4%)

LAB

lab(8.78, 15.01, -22.23)

LCH

lch(8.78, 26.82, 304.03)

OKLCH

oklch(22%, 0.0673, 289.97)

HWB

hwb(253.3, 7.5%, 78.4%)

Harmony colors

Complementary

#2f3713

Analogous

#131d37

#1b1337

#2d1337

Triadic

#1b1337

#371b13

#13371b

Split-complementary

#1b1337

#372d13

#1d3713

Tetradic

#1b1337

#37132f

#2f3713

#13371b

Square

#1b1337

#37131d

#2f3713

#13372d

Shades

Color #1b1337 mixed toward black.

#16102e

#120d25

#0d0a1b

#090612

#040309

Tints

Color #1b1337 mixed toward white.

#35266d

#5038a3

#745dc7

#a393da

#d1c9ec

Tones

Color #1b1337 mixed toward gray.

#1d1634

#1e1931

#201c2e

#221f2b

#232228

Accessibility

Aa White text on this color

17.57:1

Aa Black text on this color

1.19:1

White text reads better on this background (17.57:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#181831 · ΔE 5

Deuteranopia

#18192f · ΔE 6.5

Tritanopia

#1b2b2a · ΔE 23

Achromatopsia

#191919 · ΔE 18.3

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

Code

CSS

background-color: #1b1337;

Tailwind (arbitrary value)

bg-[#1b1337]

Related colors

Dark Slate Blue #483d8b

Medium Slate Blue #7b68ee

Slate Blue #6a5acd

Medium Purple #9370db

Navy #000080

Lavender #e6e6fa

Frequently asked questions

#1b1337 (#1b1337) is rgb(27, 19, 55) in RGB.

No, #1b1337 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 #1b1337, or check how it holds up for accessibility.

Generate a palette → Check contrast