#0f3771

Color #0f3771

A vivid, highly saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 18.09 Nearest Tailwind class blue-900 #1c398e · ΔE 5

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

Conversions

HEX

#0f3771

RGB

rgb(15, 55, 113)

HSL

hsl(215.5, 76.6%, 25.1%)

HSV / HSB

hsv(215.5, 86.7%, 44.3%)

CMYK

cmyk(86.7%, 51.3%, 0%, 55.7%)

LAB

lab(23.76, 10.09, -37.34)

LCH

lch(23.76, 38.68, 285.12)

OKLCH

oklch(34.6%, 0.1097, 258.49)

HWB

hwb(215.5, 5.9%, 55.7%)

Harmony colors

Complementary

#71490f

Analogous

#0f6871

#0f3771

#180f71

Triadic

#0f3771

#710f37

#37710f

Split-complementary

#0f3771

#71180f

#68710f

Tetradic

#0f3771

#490f71

#71490f

#37710f

Square

#0f3771

#710f68

#71490f

#0f7118

Shades

Color #0f3771 mixed toward black.

#0c2e5e

#0a254b

#071c39

#051226

#020913

Tints

Color #0f3771 mixed toward white.

#1652a9

#1e6ee1

#5692e9

#8fb6f0

#c7dbf8

Tones

Color #0f3771 mixed toward gray.

#173969

#1f3a61

#273c59

#303d50

#383f48

Accessibility

Aa White text on this color

11.63:1

Aa Black text on this color

1.81:1

White text reads better on this background (11.63:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#262667 · ΔE 8.1

Deuteranopia

#242064 · ΔE 9.7

Tritanopia

#135d5b · ΔE 27

Achromatopsia

#393939 · ΔE 20.9

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

Code

CSS

background-color: #0f3771;

Tailwind (arbitrary value)

bg-[#0f3771]

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

#0f3771 (#0f3771) is rgb(15, 55, 113) in RGB.

No, #0f3771 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.

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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 #0f3771, or check how it holds up for accessibility.

Generate a palette → Check contrast