#3873cf

Color #3873cf

A moderately saturated medium blue.

Closest named color Cornflower Blue #6495ed · ΔE 13.79 Nearest Tailwind class blue-500 #2b7fff · ΔE 6.7

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Conversions

HEX

#3873cf

RGB

rgb(56, 115, 207)

HSL

hsl(216.6, 61.1%, 51.6%)

HSV / HSB

hsv(216.6, 72.9%, 81.2%)

CMYK

cmyk(72.9%, 44.4%, 0%, 18.8%)

LAB

lab(49.01, 12.23, -53.16)

LCH

lch(49.01, 54.55, 282.96)

OKLCH

oklch(56.4%, 0.155, 259.07)

HWB

hwb(216.6, 22%, 18.8%)

Harmony colors

Complementary

#cf9438

Analogous

#38becf

#3873cf

#4938cf

Triadic

#3873cf

#cf3873

#73cf38

Split-complementary

#3873cf

#cf4938

#becf38

Tetradic

#3873cf

#9438cf

#cf9438

#73cf38

Square

#3873cf

#cf38be

#cf9438

#38cf49

Shades

Color #3873cf mixed toward black.

#2b5fb1

#224c8d

#1a396a

#112647

#091323

Tints

Color #3873cf mixed toward white.

#598ad7

#7aa2df

#9cb9e7

#bdd0ef

#dee8f7

Tones

Color #3873cf mixed toward gray.

#4576c2

#5179b6

#5e7ba9

#6a7e9d

#778190

Accessibility

Aa White text on this color

4.64:1

Aa Black text on this color

4.52:1

White text reads better on this background (4.64:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#5858be · ΔE 12.3

Deuteranopia

#544fba · ΔE 14.7

Tritanopia

#3dafab · ΔE 33.4

Achromatopsia

#747474 · ΔE 24.5

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

Code

CSS

background-color: #3873cf;

Tailwind (arbitrary value)

bg-[#3873cf]

Related colors

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Royal Blue #4169e1

Frequently asked questions

#3873cf (#3873cf) is rgb(56, 115, 207) in RGB.

No, #3873cf 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

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 #3873cf, or check how it holds up for accessibility.

Generate a palette → Check contrast