#003f7f

Color #003f7f

A vivid, highly saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 17.14 Nearest Tailwind class blue-900 #1c398e · ΔE 5.2

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

Conversions

HEX

#003f7f

RGB

rgb(0, 63, 127)

HSL

hsl(210.2, 100%, 24.9%)

HSV / HSB

hsv(210.2, 100%, 49.8%)

CMYK

cmyk(100%, 50.4%, 0%, 50.2%)

LAB

lab(26.98, 9.38, -41.01)

LCH

lch(26.98, 42.07, 282.88)

OKLCH

oklch(37.3%, 0.1224, 254.9)

HWB

hwb(210.2, 0%, 50.2%)

Harmony colors

Complementary

#7f4000

Analogous

#007f7f

#003f7f

#00007f

Triadic

#003f7f

#7f003f

#3f7f00

Split-complementary

#003f7f

#7f0000

#7f7f00

Tetradic

#003f7f

#40007f

#7f4000

#3f7f00

Square

#003f7f

#7f007f

#7f4000

#007f00

Shades

Color #003f7f mixed toward black.

#00356a

#002a55

#00203f

#00152a

#000b15

Tints

Color #003f7f mixed toward white.

#005fbf

#007eff

#3f9fff

#7fbfff

#bfdfff

Tones

Color #003f7f mixed toward gray.

#0b3f74

#153f6a

#203f5f

#2a3f55

#353f4a

Accessibility

Aa White text on this color

10.41:1

Aa Black text on this color

2.02:1

White text reads better on this background (10.41:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#282973 · ΔE 10.3

Deuteranopia

#252170 · ΔE 12.3

Tritanopia

#086967 · ΔE 28.2

Achromatopsia

#404040 · ΔE 21.8

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

Code

CSS

background-color: #003f7f;

Tailwind (arbitrary value)

bg-[#003f7f]

Related colors

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Alice Blue #f0f8ff

Steel Blue #4682b4

Light Steel Blue #b0c4de

Frequently asked questions

#003f7f (#003f7f) is rgb(0, 63, 127) in RGB.

No, #003f7f 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 #003f7f, or check how it holds up for accessibility.

Generate a palette → Check contrast