#3781e7

Color #3781e7

A vivid, highly saturated medium blue.

Closest named color Dodger Blue #1e90ff · ΔE 7.6 Nearest Tailwind class blue-500 #2b7fff · ΔE 2.6

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

Conversions

HEX

#3781e7

RGB

rgb(55, 129, 231)

HSL

hsl(214.8, 78.6%, 56.1%)

HSV / HSB

hsv(214.8, 76.2%, 90.6%)

CMYK

cmyk(76.2%, 44.2%, 0%, 9.4%)

LAB

lab(54.32, 12.23, -58.19)

LCH

lch(54.32, 59.46, 281.87)

OKLCH

oklch(61%, 0.1709, 257.36)

HWB

hwb(214.8, 21.6%, 9.4%)

Harmony colors

Complementary

#e79d37

Analogous

#37d9e7

#3781e7

#4537e7

Triadic

#3781e7

#e73781

#81e737

Split-complementary

#3781e7

#e74537

#d9e737

Tetradic

#3781e7

#9d37e7

#e79d37

#81e737

Square

#3781e7

#e737d9

#e79d37

#37e745

Shades

Color #3781e7 mixed toward black.

#1a68d5

#1453aa

#0f3f80

#0a2a55

#05152b

Tints

Color #3781e7 mixed toward white.

#5896eb

#7aabef

#9bc0f3

#bcd5f7

#deeafb

Tones

Color #3781e7 mixed toward gray.

#4683d8

#5486ca

#6388bb

#728aac

#808d9e

Accessibility

Aa White text on this color

3.85:1

Aa Black text on this color

5.46:1

Black text reads better on this background (5.46:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#6061d4 · ΔE 14.3

Deuteranopia

#5c56cf · ΔE 17.4

Tritanopia

#3dc3bf · ΔE 34.3

Achromatopsia

#828282 · ΔE 25.5

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

Code

CSS

background-color: #3781e7;

Tailwind (arbitrary value)

bg-[#3781e7]

Related colors

Light Steel Blue #b0c4de

Cornflower Blue #6495ed

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Alice Blue #f0f8ff

Frequently asked questions

#3781e7 (#3781e7) is rgb(55, 129, 231) in RGB.

No, #3781e7 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 #3781e7, or check how it holds up for accessibility.

Generate a palette → Check contrast