#21403f

Color #21403f

A muted very dark cyan.

Closest named color Dark Slate Gray #2f4f4f · ΔE 6.51 Nearest Tailwind class teal-950 #022f2e · ΔE 6.1

Open in Palette generator Color wheel Color mixer Contrast checker Blindness simulator Gradient

Conversions

HEX

#21403f

RGB

rgb(33, 64, 63)

HSL

hsl(178.1, 32%, 19%)

HSV / HSB

hsv(178.1, 48.4%, 25.1%)

CMYK

cmyk(48.4%, 0%, 1.6%, 74.9%)

LAB

lab(24.79, -11.77, -2.99)

LCH

lch(24.79, 12.14, 194.25)

OKLCH

oklch(34.7%, 0.037, 192.95)

HWB

hwb(178.1, 12.9%, 74.9%)

Harmony colors

Complementary

#402122

Analogous

#21402f

#21403f

#213140

Triadic

#21403f

#3f2140

#403f21

Split-complementary

#21403f

#402131

#402f21

Tetradic

#21403f

#212240

#402122

#403f21

Square

#21403f

#2f2140

#402122

#314021

Shades

Color #21403f mixed toward black.

#1b3534

#162b2a

#10201f

#0b1515

#050b0a

Tints

Color #21403f mixed toward white.

#386d6c

#509b98

#77b9b7

#a4d0cf

#d2e8e7

Tones

Color #21403f mixed toward gray.

#243d3d

#263b3a

#293838

#2b3635

#2e3333

Accessibility

Aa White text on this color

11.23:1

Aa Black text on this color

1.87:1

White text reads better on this background (11.23:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#31313f · ΔE 18

Deuteranopia

#2f2d3f · ΔE 20.4

Tritanopia

#233f3f · ΔE 1.1

Achromatopsia

#3b3b3b · ΔE 12.7

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

Code

CSS

background-color: #21403f;

Tailwind (arbitrary value)

bg-[#21403f]

Related colors

Medium Turquoise #48d1cc

Light Sea Green #20b2aa

Aqua #00ffff

Azure #f0ffff

Dark Cyan #008b8b

Dark Slate Gray #2f4f4f

Frequently asked questions

#21403f (#21403f) is rgb(33, 64, 63) in RGB.

No, #21403f 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.

Try it → Accessibility

Contrast Checker

Check the WCAG contrast ratio between any two colors, live, with AA/AAA pass-fail results.

Try it → Generators

Palette Generator

Generate complementary, analogous, triadic, split-complementary, tetradic, square, and monochromatic palettes from any base color.

Try it →

Build something with this color

Generate a full palette from #21403f, or check how it holds up for accessibility.

Generate a palette → Check contrast