#3755a4

Color #3755a4

A moderately saturated medium blue.

Closest named color Dark Slate Blue #483d8b · ΔE 13.29 Nearest Tailwind class blue-800 #193cb8 · ΔE 8.5

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

Conversions

HEX

#3755a4

RGB

rgb(55, 85, 164)

HSL

hsl(223.5, 49.8%, 42.9%)

HSV / HSB

hsv(223.5, 66.5%, 64.3%)

CMYK

cmyk(66.5%, 48.2%, 0%, 35.7%)

LAB

lab(37.82, 15.47, -46.06)

LCH

lch(37.82, 48.59, 288.57)

OKLCH

oklch(46.9%, 0.1322, 265.88)

HWB

hwb(223.5, 21.6%, 35.7%)

Harmony colors

Complementary

#a48637

Analogous

#378ba4

#3755a4

#4f37a4

Triadic

#3755a4

#a43755

#55a437

Split-complementary

#3755a4

#a44f37

#8ba437

Tetradic

#3755a4

#8637a4

#a48637

#55a437

Square

#3755a4

#a4378b

#a48637

#37a44f

Shades

Color #3755a4 mixed toward black.

#2e4789

#25396d

#1b2a52

#121c37

#090e1b

Tints

Color #3755a4 mixed toward white.

#496ac2

#6e88ce

#92a6da

#b6c4e7

#dbe1f3

Tones

Color #3755a4 mixed toward gray.

#40599b

#495d92

#526189

#5b6580

#646976

Accessibility

Aa White text on this color

7:1

Aa Black text on this color

3:1

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

Under color vision deficiencies

Protanopia

#464696 · ΔE 6.9

Deuteranopia

#444292 · ΔE 8

Tritanopia

#398986 · ΔE 31.5

Achromatopsia

#595959 · ΔE 23.4

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

Code

CSS

background-color: #3755a4;

Tailwind (arbitrary value)

bg-[#3755a4]

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

#3755a4 (#3755a4) is rgb(55, 85, 164) in RGB.

No, #3755a4 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 #3755a4, or check how it holds up for accessibility.

Generate a palette → Check contrast