#3f4751

Color #3f4751

A nearly neutral, gray-leaning dark blue.

Closest named color Charcoal #36454f · ΔE 3.03 Nearest Tailwind class gray-700 #364153 · ΔE 4.4

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Conversions

HEX

#3f4751

RGB

rgb(63, 71, 81)

HSL

hsl(213.3, 12.5%, 28.2%)

HSV / HSB

hsv(213.3, 22.2%, 31.8%)

CMYK

cmyk(22.2%, 12.3%, 0%, 68.2%)

LAB

lab(29.81, -0.73, -7.06)

LCH

lch(29.81, 7.1, 264.1)

OKLCH

oklch(39.5%, 0.02, 254.02)

HWB

hwb(213.3, 24.7%, 68.2%)

Harmony colors

Complementary

#51493f

Analogous

#3f5051

#3f4751

#403f51

Triadic

#3f4751

#513f47

#47513f

Split-complementary

#3f4751

#51403f

#50513f

Tetradic

#3f4751

#493f51

#51493f

#47513f

Square

#3f4751

#513f50

#51493f

#3f5140

Shades

Color #3f4751 mixed toward black.

#343b43

#2a2f36

#1f2328

#15181b

#0a0c0d

Tints

Color #3f4751 mixed toward white.

#5a6573

#768394

#98a2af

#bac1ca

#dde0e4

Tones

Color #3f4751 mixed toward gray.

#40474f

#42474e

#43474c

#45484b

#464849

Accessibility

Aa White text on this color

9.41:1

Aa Black text on this color

2.23:1

White text reads better on this background (9.41:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#43434f · ΔE 5.1

Deuteranopia

#42424e · ΔE 5.1

Tritanopia

#3f4d4c · ΔE 8.2

Achromatopsia

#464646 · ΔE 6.2

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

Code

CSS

background-color: #3f4751;

Tailwind (arbitrary value)

bg-[#3f4751]

Related colors

Light Steel Blue #b0c4de

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Cornflower Blue #6495ed

Alice Blue #f0f8ff

Frequently asked questions

#3f4751 (#3f4751) is rgb(63, 71, 81) in RGB.

No, #3f4751 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 #3f4751, or check how it holds up for accessibility.

Generate a palette → Check contrast