#0f398b

Color #0f398b

A vivid, highly saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 10.63 Nearest Tailwind class blue-900 #1c398e · ΔE 1.3

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

Conversions

HEX

#0f398b

RGB

rgb(15, 57, 139)

HSL

hsl(219.7, 80.5%, 30.2%)

HSV / HSB

hsv(219.7, 89.2%, 54.5%)

CMYK

cmyk(89.2%, 59%, 0%, 45.5%)

LAB

lab(26.42, 19.7, -49.38)

LCH

lch(26.42, 53.16, 291.75)

OKLCH

oklch(37.3%, 0.1442, 261.91)

HWB

hwb(219.7, 5.9%, 45.5%)

Harmony colors

Complementary

#8b610f

Analogous

#0f778b

#0f398b

#230f8b

Triadic

#0f398b

#8b0f39

#398b0f

Split-complementary

#0f398b

#8b230f

#778b0f

Tetradic

#0f398b

#610f8b

#8b610f

#398b0f

Square

#0f398b

#8b0f77

#8b610f

#0f8b23

Shades

Color #0f398b mixed toward black.

#0d2f74

#0a265d

#081c46

#05132e

#030917

Tints

Color #0f398b mixed toward white.

#154fc1

#2969e8

#5e8fee

#94b4f3

#c9daf9

Tones

Color #0f398b mixed toward gray.

#193c81

#244076

#2e436c

#384662

#434a57

Accessibility

Aa White text on this color

10.61:1

Aa Black text on this color

1.98:1

White text reads better on this background (10.61:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#27277d · ΔE 7.2

Deuteranopia

#25227a · ΔE 8.4

Tritanopia

#13716e · ΔE 32.8

Achromatopsia

#3e3e3e · ΔE 24.4

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

Code

CSS

background-color: #0f398b;

Tailwind (arbitrary value)

bg-[#0f398b]

Related colors

Cornflower Blue #6495ed

Royal Blue #4169e1

Light Steel Blue #b0c4de

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Frequently asked questions

#0f398b (#0f398b) is rgb(15, 57, 139) in RGB.

No, #0f398b 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 #0f398b, or check how it holds up for accessibility.

Generate a palette → Check contrast