#0b3a81

Color #0b3a81

A vivid, highly saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 12.76 Nearest Tailwind class blue-900 #1c398e · ΔE 3.1

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

Conversions

HEX

#0b3a81

RGB

rgb(11, 58, 129)

HSL

hsl(216.1, 84.3%, 27.5%)

HSV / HSB

hsv(216.1, 91.5%, 50.6%)

CMYK

cmyk(91.5%, 55%, 0%, 49.4%)

LAB

lab(25.81, 14.5, -44.15)

LCH

lch(25.81, 46.47, 288.18)

OKLCH

oklch(36.5%, 0.1297, 259.43)

HWB

hwb(216.1, 4.3%, 49.4%)

Harmony colors

Complementary

#81520b

Analogous

#0b7581

#0b3a81

#170b81

Triadic

#0b3a81

#810b3a

#3a810b

Split-complementary

#0b3a81

#81170b

#75810b

Tetradic

#0b3a81

#520b81

#81520b

#3a810b

Square

#0b3a81

#810b75

#81520b

#0b8117

Shades

Color #0b3a81 mixed toward black.

#09306c

#072756

#061d41

#04132b

#020a16

Tints

Color #0b3a81 mixed toward white.

#1054ba

#1c6fec

#5593f0

#8db7f5

#c6dbfa

Tones

Color #0b3a81 mixed toward gray.

#153c77

#1f3e6e

#294064

#32425a

#3c4450

Accessibility

Aa White text on this color

10.84:1

Aa Black text on this color

1.94:1

White text reads better on this background (10.84:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#272775 · ΔE 8.2

Deuteranopia

#242171 · ΔE 9.7

Tritanopia

#106a67 · ΔE 30.4

Achromatopsia

#3d3d3d · ΔE 22.9

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

Code

CSS

background-color: #0b3a81;

Tailwind (arbitrary value)

bg-[#0b3a81]

Related colors

Light Steel Blue #b0c4de

Cornflower Blue #6495ed

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Alice Blue #f0f8ff

Frequently asked questions

#0b3a81 (#0b3a81) is rgb(11, 58, 129) in RGB.

No, #0b3a81 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 #0b3a81, or check how it holds up for accessibility.

Generate a palette → Check contrast