#3f4855

Color #3f4855

A nearly neutral, gray-leaning dark blue.

Closest named color Charcoal #36454f · ΔE 3.64 Nearest Tailwind class gray-700 #364153 · ΔE 3.4

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Conversions

HEX

#3f4855

RGB

rgb(63, 72, 85)

HSL

hsl(215.5, 14.9%, 29%)

HSV / HSB

hsv(215.5, 25.9%, 33.3%)

CMYK

cmyk(25.9%, 15.3%, 0%, 66.7%)

LAB

lab(30.27, -0.29, -8.93)

LCH

lch(30.27, 8.93, 268.14)

OKLCH

oklch(39.9%, 0.025, 257.52)

HWB

hwb(215.5, 24.7%, 66.7%)

Harmony colors

Complementary

#554c3f

Analogous

#3f5355

#3f4855

#413f55

Triadic

#3f4855

#553f48

#48553f

Split-complementary

#3f4855

#55413f

#53553f

Tetradic

#3f4855

#4c3f55

#554c3f

#48553f

Square

#3f4855

#553f53

#554c3f

#3f5541

Shades

Color #3f4855 mixed toward black.

#343c47

#2a3039

#1f242a

#15181c

#0a0c0e

Tints

Color #3f4855 mixed toward white.

#596578

#748398

#97a2b2

#bac1cc

#dce0e5

Tones

Color #3f4855 mixed toward gray.

#414853

#434951

#44494f

#46494e

#484a4c

Accessibility

Aa White text on this color

9.25:1

Aa Black text on this color

2.27:1

White text reads better on this background (9.25:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#434352 · ΔE 5.5

Deuteranopia

#434251 · ΔE 6.1

Tritanopia

#3f504f · ΔE 10.2

Achromatopsia

#474747 · ΔE 7.4

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

Code

CSS

background-color: #3f4855;

Tailwind (arbitrary value)

bg-[#3f4855]

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

#3f4855 (#3f4855) is rgb(63, 72, 85) in RGB.

No, #3f4855 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 #3f4855, or check how it holds up for accessibility.

Generate a palette → Check contrast