#283f40

Color #283f40

A muted dark cyan.

Closest named color Dark Slate Gray #2f4f4f · ΔE 7.09 Nearest Tailwind class mist-700 #394447 · ΔE 5.8

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Conversions

HEX

#283f40

RGB

rgb(40, 63, 64)

HSL

hsl(182.5, 23.1%, 20.4%)

HSV / HSB

hsv(182.5, 37.5%, 25.1%)

CMYK

cmyk(37.5%, 1.6%, 0%, 74.9%)

LAB

lab(24.88, -8.63, -3.48)

LCH

lch(24.88, 9.31, 201.96)

OKLCH

oklch(34.9%, 0.0287, 199.32)

HWB

hwb(182.5, 15.7%, 74.9%)

Harmony colors

Complementary

#402928

Analogous

#284035

#283f40

#283340

Triadic

#283f40

#40283f

#3f4028

Split-complementary

#283f40

#402833

#403528

Tetradic

#283f40

#292840

#402928

#3f4028

Square

#283f40

#352840

#402928

#334028

Shades

Color #283f40 mixed toward black.

#213535

#1b2a2b

#142020

#0d1515

#070b0b

Tints

Color #283f40 mixed toward white.

#42686a

#5c9193

#82afb1

#accacb

#d5e4e5

Tones

Color #283f40 mixed toward gray.

#2a3d3e

#2c3b3c

#2e3a3a

#303838

#323636

Accessibility

Aa White text on this color

11.2:1

Aa Black text on this color

1.88:1

White text reads better on this background (11.2:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#333440 · ΔE 14

Deuteranopia

#323040 · ΔE 17.1

Tritanopia

#294040 · ΔE 0.7

Achromatopsia

#3b3b3b · ΔE 10.3

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

Code

CSS

background-color: #283f40;

Tailwind (arbitrary value)

bg-[#283f40]

Related colors

Cadet Blue #5f9ea0

Dark Turquoise #00ced1

Aqua #00ffff

Azure #f0ffff

Dark Cyan #008b8b

Dark Slate Gray #2f4f4f

Frequently asked questions

#283f40 (#283f40) is rgb(40, 63, 64) in RGB.

No, #283f40 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 #283f40, or check how it holds up for accessibility.

Generate a palette → Check contrast