#0f3181

Color #0f3181

A vivid, highly saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 10.9 Nearest Tailwind class blue-900 #1c398e · ΔE 2.8

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

Conversions

HEX

#0f3181

RGB

rgb(15, 49, 129)

HSL

hsl(222.1, 79.2%, 28.2%)

HSV / HSB

hsv(222.1, 88.4%, 50.6%)

CMYK

cmyk(88.4%, 62%, 0%, 49.4%)

LAB

lab(23.28, 21.19, -48.26)

LCH

lch(23.28, 52.71, 293.71)

OKLCH

oklch(34.6%, 0.1406, 263.39)

HWB

hwb(222.1, 5.9%, 49.4%)

Harmony colors

Complementary

#815f0f

Analogous

#0f6a81

#0f3181

#260f81

Triadic

#0f3181

#810f31

#31810f

Split-complementary

#0f3181

#81260f

#6a810f

Tetradic

#0f3181

#5f0f81

#815f0f

#31810f

Square

#0f3181

#810f6a

#815f0f

#0f8126

Shades

Color #0f3181 mixed toward black.

#0c296b

#0a2156

#071840

#05102b

#020815

Tints

Color #0f3181 mixed toward white.

#1546b8

#245ee6

#5b86ec

#92aef2

#c8d7f9

Tones

Color #0f3181 mixed toward gray.

#183577

#22396e

#2b3c64

#35405b

#3e4451

Accessibility

Aa White text on this color

11.82:1

Aa Black text on this color

1.78:1

White text reads better on this background (11.82:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#222274 · ΔE 5.9

Deuteranopia

#201d70 · ΔE 7.1

Tritanopia

#126865 · ΔE 32.4

Achromatopsia

#373737 · ΔE 24.3

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

Code

CSS

background-color: #0f3181;

Tailwind (arbitrary value)

bg-[#0f3181]

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

#0f3181 (#0f3181) is rgb(15, 49, 129) in RGB.

No, #0f3181 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 #0f3181, or check how it holds up for accessibility.

Generate a palette → Check contrast