#1e3771

Color #1e3771

A moderately saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 16.45 Nearest Tailwind class blue-900 #1c398e · ΔE 4.6

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Conversions

HEX

#1e3771

RGB

rgb(30, 55, 113)

HSL

hsl(221.9, 58%, 28%)

HSV / HSB

hsv(221.9, 73.5%, 44.3%)

CMYK

cmyk(73.5%, 51.3%, 0%, 55.7%)

LAB

lab(24.32, 12.05, -36.4)

LCH

lch(24.32, 38.34, 288.32)

OKLCH

oklch(35.2%, 0.1049, 264.2)

HWB

hwb(221.9, 11.8%, 55.7%)

Harmony colors

Complementary

#71581e

Analogous

#1e6071

#1e3771

#2e1e71

Triadic

#1e3771

#711e37

#37711e

Split-complementary

#1e3771

#712e1e

#60711e

Tetradic

#1e3771

#581e71

#71581e

#37711e

Square

#1e3771

#711e60

#71581e

#1e712e

Shades

Color #1e3771 mixed toward black.

#192e5e

#14254b

#0f1b38

#0a1226

#050913

Tints

Color #1e3771 mixed toward white.

#2b4fa1

#3e68cc

#6e8ed8

#9eb4e5

#cfd9f2

Tones

Color #1e3771 mixed toward gray.

#253a6a

#2c3c63

#333f5c

#3a4255

#40454e

Accessibility

Aa White text on this color

11.41:1

Aa Black text on this color

1.84:1

White text reads better on this background (11.41:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#2b2b67 · ΔE 5.9

Deuteranopia

#292764 · ΔE 6.9

Tritanopia

#205d5b · ΔE 27

Achromatopsia

#3a3a3a · ΔE 21

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

Code

CSS

background-color: #1e3771;

Tailwind (arbitrary value)

bg-[#1e3771]

Related colors

Royal Blue #4169e1

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Frequently asked questions

#1e3771 (#1e3771) is rgb(30, 55, 113) in RGB.

No, #1e3771 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 #1e3771, or check how it holds up for accessibility.

Generate a palette → Check contrast