#0f51a3

Color #0f51a3

A vivid, highly saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 15.65 Nearest Tailwind class sky-800 #00598a · ΔE 6.5

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

Conversions

HEX

#0f51a3

RGB

rgb(15, 81, 163)

HSL

hsl(213.2, 83.1%, 34.9%)

HSV / HSB

hsv(213.2, 90.8%, 63.9%)

CMYK

cmyk(90.8%, 50.3%, 0%, 36.1%)

LAB

lab(35.26, 13.09, -49.65)

LCH

lch(35.26, 51.35, 284.77)

OKLCH

oklch(44.6%, 0.1468, 257.09)

HWB

hwb(213.2, 5.9%, 36.1%)

Harmony colors

Complementary

#a3610f

Analogous

#0f9ba3

#0f51a3

#170fa3

Triadic

#0f51a3

#a30f51

#51a30f

Split-complementary

#0f51a3

#a3170f

#9ba30f

Tetradic

#0f51a3

#610fa3

#a3610f

#51a30f

Square

#0f51a3

#a30f9b

#a3610f

#0fa317

Shades

Color #0f51a3 mixed toward black.

#0d4488

#0a366d

#082951

#051b36

#030e1b

Tints

Color #0f51a3 mixed toward white.

#146ad6

#3487ec

#67a5f1

#9ac3f6

#cce1fa

Tones

Color #0f51a3 mixed toward gray.

#1b5297

#28548a

#34557e

#405672

#4d5865

Accessibility

Aa White text on this color

7.7:1

Aa Black text on this color

2.73:1

White text reads better on this background (7.7:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#373894 · ΔE 11

Deuteranopia

#342f91 · ΔE 13.3

Tritanopia

#178784 · ΔE 32.5

Achromatopsia

#535353 · ΔE 23.9

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

Code

CSS

background-color: #0f51a3;

Tailwind (arbitrary value)

bg-[#0f51a3]

Related colors

Light Steel Blue #b0c4de

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Alice Blue #f0f8ff

Cornflower Blue #6495ed

Frequently asked questions

#0f51a3 (#0f51a3) is rgb(15, 81, 163) in RGB.

No, #0f51a3 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 #0f51a3, or check how it holds up for accessibility.

Generate a palette → Check contrast