#003f5f

Color #003f5f

A vivid, highly saturated very dark blue.

Closest named color Charcoal #36454f · ΔE 16.43 Nearest Tailwind class sky-900 #024a70 · ΔE 3.8

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

Conversions

HEX

#003f5f

RGB

rgb(0, 63, 95)

HSL

hsl(200.2, 100%, 18.6%)

HSV / HSB

hsv(200.2, 100%, 37.3%)

CMYK

cmyk(100%, 33.7%, 0%, 62.7%)

LAB

lab(24.89, -4.66, -23.95)

LCH

lch(24.89, 24.4, 258.99)

OKLCH

oklch(35%, 0.0792, 239.26)

HWB

hwb(200.2, 0%, 62.7%)

Harmony colors

Complementary

#5f2000

Analogous

#005f4f

#003f5f

#000f5f

Triadic

#003f5f

#5f003f

#3f5f00

Split-complementary

#003f5f

#5f000f

#5f4f00

Tetradic

#003f5f

#20005f

#5f2000

#3f5f00

Square

#003f5f

#4f005f

#5f2000

#0f5f00

Shades

Color #003f5f mixed toward black.

#00344f

#002a3f

#001f2f

#001520

#000a10

Tints

Color #003f5f mixed toward white.

#006da4

#009be9

#2fb9ff

#75d0ff

#bae8ff

Tones

Color #003f5f mixed toward gray.

#083c57

#103a4f

#183747

#20353f

#283237

Accessibility

Aa White text on this color

11.19:1

Aa Black text on this color

1.88:1

White text reads better on this background (11.19:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#282959 · ΔE 14.3

Deuteranopia

#252157 · ΔE 15.8

Tritanopia

#085352 · ΔE 17.8

Achromatopsia

#3b3b3b · ΔE 16

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

Code

CSS

background-color: #003f5f;

Tailwind (arbitrary value)

bg-[#003f5f]

Related colors

Sky Blue #87ceeb

Light Sky Blue #87cefa

Charcoal #36454f

Deep Sky Blue #00bfff

Light Blue #add8e6

Steel Blue #4682b4

Frequently asked questions

#003f5f (#003f5f) is rgb(0, 63, 95) in RGB.

No, #003f5f 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 #003f5f, or check how it holds up for accessibility.

Generate a palette → Check contrast