#283039

Color #283039

A muted very dark blue.

Closest named color Charcoal #36454f · ΔE 9.28 Nearest Tailwind class gray-800 #1e2939 · ΔE 4.4

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Conversions

HEX

#283039

RGB

rgb(40, 48, 57)

HSL

hsl(211.8, 17.5%, 19%)

HSV / HSB

hsv(211.8, 29.8%, 22.4%)

CMYK

cmyk(29.8%, 15.8%, 0%, 77.6%)

LAB

lab(19.48, -0.91, -6.85)

LCH

lch(19.48, 6.91, 262.43)

OKLCH

oklch(30.5%, 0.0197, 251.38)

HWB

hwb(211.8, 15.7%, 77.6%)

Harmony colors

Complementary

#393128

Analogous

#283839

#283039

#282839

Triadic

#283039

#392830

#303928

Split-complementary

#283039

#392828

#383928

Tetradic

#283039

#312839

#393128

#303928

Square

#283039

#392838

#393128

#283928

Shades

Color #283039 mixed toward black.

#21282f

#1b2026

#14181c

#0d1013

#070809

Tints

Color #283039 mixed toward white.

#445261

#61748a

#8697aa

#aeb9c6

#d7dce3

Tones

Color #283039 mixed toward gray.

#293038

#2b3036

#2c3035

#2e3033

#2f3032

Accessibility

Aa White text on this color

13.36:1

Aa Black text on this color

1.57:1

White text reads better on this background (13.36:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#2c2c37 · ΔE 5.3

Deuteranopia

#2b2b36 · ΔE 5.4

Tritanopia

#283535 · ΔE 7.2

Achromatopsia

#2f2f2f · ΔE 6

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

Code

CSS

background-color: #283039;

Tailwind (arbitrary value)

bg-[#283039]

Related colors

Light Slate Gray #778899

Slate Gray #708090

Light Steel Blue #b0c4de

Dodger Blue #1e90ff

Alice Blue #f0f8ff

Steel Blue #4682b4

Frequently asked questions

#283039 (#283039) is rgb(40, 48, 57) in RGB.

No, #283039 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 #283039, or check how it holds up for accessibility.

Generate a palette → Check contrast