#0d3f99

Color #0d3f99

A vivid, highly saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 12.39 Nearest Tailwind class blue-900 #1c398e · ΔE 2.7

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

Conversions

HEX

#0d3f99

RGB

rgb(13, 63, 153)

HSL

hsl(218.6, 84.3%, 32.5%)

HSV / HSB

hsv(218.6, 91.5%, 60%)

CMYK

cmyk(91.5%, 58.8%, 0%, 40%)

LAB

lab(29.26, 21.18, -53.36)

LCH

lch(29.26, 57.41, 291.65)

OKLCH

oklch(39.8%, 0.1562, 261.31)

HWB

hwb(218.6, 5.1%, 40%)

Harmony colors

Complementary

#99670d

Analogous

#0d8599

#0d3f99

#210d99

Triadic

#0d3f99

#990d3f

#3f990d

Split-complementary

#0d3f99

#99210d

#85990d

Tetradic

#0d3f99

#670d99

#99670d

#3f990d

Square

#0d3f99

#990d85

#99670d

#0d9921

Shades

Color #0d3f99 mixed toward black.

#0b347f

#092a66

#071f4c

#041533

#020a19

Tints

Color #0d3f99 mixed toward white.

#1255ce

#2c71ed

#6094f1

#95b8f6

#cadbfa

Tones

Color #0d3f99 mixed toward gray.

#19428d

#244681

#304976

#3c4c6a

#47505f

Accessibility

Aa White text on this color

9.6:1

Aa Black text on this color

2.19:1

White text reads better on this background (9.6:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#2b2b8a · ΔE 7.8

Deuteranopia

#282486 · ΔE 9.5

Tritanopia

#137c79 · ΔE 34.4

Achromatopsia

#454545 · ΔE 25.2

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

Code

CSS

background-color: #0d3f99;

Tailwind (arbitrary value)

bg-[#0d3f99]

Related colors

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Royal Blue #4169e1

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Frequently asked questions

#0d3f99 (#0d3f99) is rgb(13, 63, 153) in RGB.

No, #0d3f99 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 #0d3f99, or check how it holds up for accessibility.

Generate a palette → Check contrast