#3f72ab

Color #3f72ab

A moderately saturated medium blue.

Closest named color Steel Blue #4682b4 · ΔE 8.22 Nearest Tailwind class sky-700 #0069a8 · ΔE 5.3

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

Conversions

HEX

#3f72ab

RGB

rgb(63, 114, 171)

HSL

hsl(211.7, 46.2%, 45.9%)

HSV / HSB

hsv(211.7, 63.2%, 67.1%)

CMYK

cmyk(63.2%, 33.3%, 0%, 32.9%)

LAB

lab(47.01, 1.06, -35.55)

LCH

lch(47.01, 35.57, 271.71)

OKLCH

oklch(54.3%, 0.1053, 252.6)

HWB

hwb(211.7, 24.7%, 32.9%)

Harmony colors

Complementary

#ab783f

Analogous

#3fa8ab

#3f72ab

#423fab

Triadic

#3f72ab

#ab3f72

#72ab3f

Split-complementary

#3f72ab

#ab423f

#a8ab3f

Tetradic

#3f72ab

#783fab

#ab783f

#72ab3f

Square

#3f72ab

#ab3fa8

#ab783f

#3fab42

Shades

Color #3f72ab mixed toward black.

#345f8f

#2a4c72

#1f3956

#152639

#0a131d

Tints

Color #3f72ab mixed toward white.

#5789c1

#79a1ce

#9ab8da

#bcd0e6

#dde7f3

Tones

Color #3f72ab mixed toward gray.

#4872a2

#517399

#5a7490

#637487

#6c757e

Accessibility

Aa White text on this color

4.99:1

Aa Black text on this color

4.21:1

White text reads better on this background (4.99:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#595aa0 · ΔE 12.6

Deuteranopia

#56529d · ΔE 14.7

Tritanopia

#439693 · ΔE 25.1

Achromatopsia

#6f6f6f · ΔE 19.8

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

Code

CSS

background-color: #3f72ab;

Tailwind (arbitrary value)

bg-[#3f72ab]

Related colors

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Light Steel Blue #b0c4de

Alice Blue #f0f8ff

Steel Blue #4682b4

Frequently asked questions

#3f72ab (#3f72ab) is rgb(63, 114, 171) in RGB.

No, #3f72ab 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 #3f72ab, or check how it holds up for accessibility.

Generate a palette → Check contrast