#181a9f

Color #181a9f

A vivid, highly saturated dark blue.

Closest named color Dark Blue #00008b · ΔE 7.77 Nearest Tailwind class indigo-800 #372aac · ΔE 4.6

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

Conversions

HEX

#181a9f

RGB

rgb(24, 26, 159)

HSL

hsl(239.1, 73.8%, 35.9%)

HSV / HSB

hsv(239.1, 84.9%, 62.4%)

CMYK

cmyk(84.9%, 83.6%, 0%, 37.6%)

LAB

lab(21.71, 47.06, -69.45)

LCH

lch(21.71, 83.89, 304.12)

OKLCH

oklch(34.6%, 0.2011, 268.83)

HWB

hwb(239.1, 9.4%, 37.6%)

Harmony colors

Complementary

#9f9d18

Analogous

#185e9f

#181a9f

#5a189f

Triadic

#181a9f

#9f181a

#1a9f18

Split-complementary

#181a9f

#9f5a18

#5e9f18

Tetradic

#181a9f

#9d189f

#9f9d18

#1a9f18

Square

#181a9f

#9f185e

#9f9d18

#189f5a

Shades

Color #181a9f mixed toward black.

#141685

#10116a

#0c0d50

#080935

#04041b

Tints

Color #181a9f mixed toward white.

#1f22ce

#4244e2

#7173ea

#a0a2f1

#d0d0f8

Tones

Color #181a9f mixed toward gray.

#232594

#2f3089

#3a3b7d

#454672

#505167

Accessibility

Aa White text on this color

12.45:1

Aa Black text on this color

1.69:1

White text reads better on this background (12.45:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#19198d · ΔE 2.5

Deuteranopia

#191988 · ΔE 3.2

Tritanopia

#187c78 · ΔE 40.9

Achromatopsia

#343434 · ΔE 29.1

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

Code

CSS

background-color: #181a9f;

Tailwind (arbitrary value)

bg-[#181a9f]

Related colors

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Medium Blue #0000cd

Frequently asked questions

#181a9f (#181a9f) is rgb(24, 26, 159) in RGB.

No, #181a9f 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.

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 #181a9f, or check how it holds up for accessibility.

Generate a palette → Check contrast