#213b3f

Color #213b3f

A muted very dark cyan.

Closest named color Charcoal #36454f · ΔE 8 Nearest Tailwind class mist-700 #394447 · ΔE 6.5

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Conversions

HEX

#213b3f

RGB

rgb(33, 59, 63)

HSL

hsl(188, 31.3%, 18.8%)

HSV / HSB

hsv(188, 47.6%, 24.7%)

CMYK

cmyk(47.6%, 6.3%, 0%, 75.3%)

LAB

lab(23.03, -8.7, -5.61)

LCH

lch(23.03, 10.35, 212.82)

OKLCH

oklch(33.3%, 0.0327, 208.13)

HWB

hwb(188, 12.9%, 75.3%)

Harmony colors

Complementary

#3f2521

Analogous

#213f34

#213b3f

#212c3f

Triadic

#213b3f

#3f213b

#3b3f21

Split-complementary

#213b3f

#3f212c

#3f3421

Tetradic

#213b3f

#25213f

#3f2521

#3b3f21

Square

#213b3f

#34213f

#3f2521

#2c3f21

Shades

Color #213b3f mixed toward black.

#1b3134

#16272a

#101d1f

#0b1415

#050a0a

Tints

Color #213b3f mixed toward white.

#39656c

#50909a

#77afb8

#a4cad0

#d2e4e7

Tones

Color #213b3f mixed toward gray.

#23393c

#26373a

#283537

#2b3435

#2d3232

Accessibility

Aa White text on this color

11.92:1

Aa Black text on this color

1.76:1

White text reads better on this background (11.92:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#2e2e3e · ΔE 15.9

Deuteranopia

#2d2b3e · ΔE 17.9

Tritanopia

#233d3d · ΔE 2.5

Achromatopsia

#373737 · ΔE 10.8

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

Code

CSS

background-color: #213b3f;

Tailwind (arbitrary value)

bg-[#213b3f]

Related colors

Powder Blue #b0e0e6

Cadet Blue #5f9ea0

Light Blue #add8e6

Dark Turquoise #00ced1

Deep Sky Blue #00bfff

Aqua #00ffff

Frequently asked questions

#213b3f (#213b3f) is rgb(33, 59, 63) in RGB.

No, #213b3f 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

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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 #213b3f, or check how it holds up for accessibility.

Generate a palette → Check contrast