#33373f

Color #33373f

A nearly neutral, gray-leaning dark blue.

Closest named color Charcoal #36454f · ΔE 6.92 Nearest Tailwind class zinc-700 #3f3f46 · ΔE 3.6

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Conversions

HEX

#33373f

RGB

rgb(51, 55, 63)

HSL

hsl(220, 10.5%, 22.4%)

HSV / HSB

hsv(220, 19%, 24.7%)

CMYK

cmyk(19%, 12.7%, 0%, 75.3%)

LAB

lab(22.98, 0.33, -5.55)

LCH

lch(22.98, 5.56, 273.4)

OKLCH

oklch(33.6%, 0.0151, 264.29)

HWB

hwb(220, 20%, 75.3%)

Harmony colors

Complementary

#3f3b33

Analogous

#333d3f

#33373f

#35333f

Triadic

#33373f

#3f3337

#373f33

Split-complementary

#33373f

#3f3533

#3d3f33

Tetradic

#33373f

#3b333f

#3f3b33

#373f33

Square

#33373f

#3f333d

#3f3b33

#333f35

Shades

Color #33373f mixed toward black.

#2b2e35

#22252a

#1a1c20

#111215

#09090b

Tints

Color #33373f mixed toward white.

#515764

#6e7788

#9299a6

#b6bbc4

#dbdde1

Tones

Color #33373f mixed toward gray.

#34373e

#35383d

#36383c

#37383b

#38393a

Accessibility

Aa White text on this color

11.94:1

Aa Black text on this color

1.76:1

White text reads better on this background (11.94:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#35353d · ΔE 2.4

Deuteranopia

#35343d · ΔE 3.3

Tritanopia

#333c3b · ΔE 7.2

Achromatopsia

#373737 · ΔE 5

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

Code

CSS

background-color: #33373f;

Tailwind (arbitrary value)

bg-[#33373f]

Related colors

Cornflower Blue #6495ed

Royal Blue #4169e1

Light Steel Blue #b0c4de

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Frequently asked questions

#33373f (#33373f) is rgb(51, 55, 63) in RGB.

No, #33373f 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 #33373f, or check how it holds up for accessibility.

Generate a palette → Check contrast