#3757a4

Color #3757a4

A moderately saturated medium blue.

Closest named color Dark Slate Blue #483d8b · ΔE 14.42 Nearest Tailwind class sky-800 #00598a · ΔE 8.6

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

Conversions

HEX

#3757a4

RGB

rgb(55, 87, 164)

HSL

hsl(222.4, 49.8%, 42.9%)

HSV / HSB

hsv(222.4, 66.5%, 64.3%)

CMYK

cmyk(66.5%, 47%, 0%, 35.7%)

LAB

lab(38.39, 14.16, -45.14)

LCH

lch(38.39, 47.31, 287.42)

OKLCH

oklch(47.4%, 0.1296, 264.91)

HWB

hwb(222.4, 21.6%, 35.7%)

Harmony colors

Complementary

#a48437

Analogous

#378da4

#3757a4

#4d37a4

Triadic

#3757a4

#a43757

#57a437

Split-complementary

#3757a4

#a44d37

#8da437

Tetradic

#3757a4

#8437a4

#a48437

#57a437

Square

#3757a4

#a4378d

#a48437

#37a44d

Shades

Color #3757a4 mixed toward black.

#2e4889

#253a6d

#1b2b52

#121d37

#090e1b

Tints

Color #3757a4 mixed toward white.

#496dc2

#6e8ace

#92a7da

#b6c4e7

#dbe2f3

Tones

Color #3757a4 mixed toward gray.

#405b9b

#495e92

#526289

#5b6680

#646a76

Accessibility

Aa White text on this color

6.86:1

Aa Black text on this color

3.06:1

White text reads better on this background (6.86:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#474796 · ΔE 7.5

Deuteranopia

#454392 · ΔE 8.5

Tritanopia

#398986 · ΔE 31

Achromatopsia

#5a5a5a · ΔE 23.1

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

Code

CSS

background-color: #3757a4;

Tailwind (arbitrary value)

bg-[#3757a4]

Related colors

Royal Blue #4169e1

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Frequently asked questions

#3757a4 (#3757a4) is rgb(55, 87, 164) in RGB.

No, #3757a4 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 #3757a4, or check how it holds up for accessibility.

Generate a palette → Check contrast