#21437f

Color #21437f

A moderately saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 16.97 Nearest Tailwind class blue-900 #1c398e · ΔE 4.7

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

Conversions

HEX

#21437f

RGB

rgb(33, 67, 127)

HSL

hsl(218.3, 58.8%, 31.4%)

HSV / HSB

hsv(218.3, 74%, 49.8%)

CMYK

cmyk(74%, 47.2%, 0%, 50.2%)

LAB

lab(29.08, 9.78, -37.58)

LCH

lch(29.08, 38.83, 284.59)

OKLCH

oklch(39.2%, 0.1091, 260.82)

HWB

hwb(218.3, 12.9%, 50.2%)

Harmony colors

Complementary

#7f5d21

Analogous

#21727f

#21437f

#2e217f

Triadic

#21437f

#7f2143

#437f21

Split-complementary

#21437f

#7f2e21

#727f21

Tetradic

#21437f

#5d217f

#7f5d21

#437f21

Square

#21437f

#7f2172

#7f5d21

#217f2e

Shades

Color #21437f mixed toward black.

#1b386a

#162d55

#102240

#0b162a

#050b15

Tints

Color #21437f mixed toward white.

#2d5bad

#4677cf

#7499db

#a2bbe7

#d1ddf3

Tones

Color #21437f mixed toward gray.

#294577

#31476f

#394a68

#404c60

#484e58

Accessibility

Aa White text on this color

9.66:1

Aa Black text on this color

2.17:1

White text reads better on this background (9.66:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#333374 · ΔE 7.9

Deuteranopia

#312e71 · ΔE 9.2

Tritanopia

#246a68 · ΔE 27.1

Achromatopsia

#454545 · ΔE 21

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

Code

CSS

background-color: #21437f;

Tailwind (arbitrary value)

bg-[#21437f]

Related colors

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Royal Blue #4169e1

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Frequently asked questions

#21437f (#21437f) is rgb(33, 67, 127) in RGB.

No, #21437f 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 #21437f, or check how it holds up for accessibility.

Generate a palette → Check contrast