#3f6375

Color #3f6375

A muted dark blue.

Closest named color Charcoal #36454f · ΔE 13.89 Nearest Tailwind class cyan-800 #005f78 · ΔE 6

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Conversions

HEX

#3f6375

RGB

rgb(63, 99, 117)

HSL

hsl(200, 30%, 35.3%)

HSV / HSB

hsv(200, 46.2%, 45.9%)

CMYK

cmyk(46.2%, 15.4%, 0%, 54.1%)

LAB

lab(40.02, -7.64, -14.16)

LCH

lch(40.02, 16.09, 241.65)

OKLCH

oklch(48%, 0.0504, 230.88)

HWB

hwb(200, 24.7%, 54.1%)

Harmony colors

Complementary

#75513f

Analogous

#3f756c

#3f6375

#3f4875

Triadic

#3f6375

#753f63

#63753f

Split-complementary

#3f6375

#753f48

#756c3f

Tetradic

#3f6375

#513f75

#75513f

#63753f

Square

#3f6375

#6c3f75

#75513f

#48753f

Shades

Color #3f6375 mixed toward black.

#355362

#2a424e

#20323b

#152127

#0b1114

Tints

Color #3f6375 mixed toward white.

#528199

#709cb2

#94b5c5

#b8ced9

#dbe6ec

Tones

Color #3f6375 mixed toward gray.

#446271

#48606c

#4d5f68

#515d63

#565c5f

Accessibility

Aa White text on this color

6.46:1

Aa Black text on this color

3.25:1

White text reads better on this background (6.46:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#515171 · ΔE 17

Deuteranopia

#4f4c70 · ΔE 18.4

Tritanopia

#416e6d · ΔE 11

Achromatopsia

#5e5e5e · ΔE 12.9

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

Code

CSS

background-color: #3f6375;

Tailwind (arbitrary value)

bg-[#3f6375]

Related colors

Sky Blue #87ceeb

Light Sky Blue #87cefa

Charcoal #36454f

Deep Sky Blue #00bfff

Light Blue #add8e6

Steel Blue #4682b4

Frequently asked questions

#3f6375 (#3f6375) is rgb(63, 99, 117) in RGB.

No, #3f6375 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 #3f6375, or check how it holds up for accessibility.

Generate a palette → Check contrast