#3f8be9

Color #3f8be9

A vivid, highly saturated medium blue.

Closest named color Cornflower Blue #6495ed · ΔE 6.83 Nearest Tailwind class blue-500 #2b7fff · ΔE 4.6

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

Conversions

HEX

#3f8be9

RGB

rgb(63, 139, 233)

HSL

hsl(213.2, 79.4%, 58%)

HSV / HSB

hsv(213.2, 73%, 91.4%)

CMYK

cmyk(73%, 40.3%, 0%, 8.6%)

LAB

lab(57.47, 7.85, -54.26)

LCH

lch(57.47, 54.82, 278.23)

OKLCH

oklch(63.5%, 0.1602, 255.36)

HWB

hwb(213.2, 24.7%, 8.6%)

Harmony colors

Complementary

#e99d3f

Analogous

#3fe0e9

#3f8be9

#483fe9

Triadic

#3f8be9

#e93f8b

#8be93f

Split-complementary

#3f8be9

#e9483f

#e0e93f

Tetradic

#3f8be9

#9d3fe9

#e99d3f

#8be93f

Square

#3f8be9

#e93fe0

#e99d3f

#3fe948

Shades

Color #3f8be9 mixed toward black.

#1971dd

#145ab1

#0f4485

#0a2d58

#05172c

Tints

Color #3f8be9 mixed toward white.

#5f9eed

#7fb2f0

#9fc5f4

#bfd8f8

#dfecfb

Tones

Color #3f8be9 mixed toward gray.

#4d8cdb

#5b8ecd

#698fbe

#7891b0

#8692a2

Accessibility

Aa White text on this color

3.45:1

Aa Black text on this color

6.08:1

Black text reads better on this background (6.08:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#6969d7 · ΔE 15.5

Deuteranopia

#645ed2 · ΔE 18.6

Tritanopia

#45c7c4 · ΔE 31.8

Achromatopsia

#8a8a8a · ΔE 24.6

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

Code

CSS

background-color: #3f8be9;

Tailwind (arbitrary value)

bg-[#3f8be9]

Related colors

Light Steel Blue #b0c4de

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Alice Blue #f0f8ff

Cornflower Blue #6495ed

Frequently asked questions

#3f8be9 (#3f8be9) is rgb(63, 139, 233) in RGB.

No, #3f8be9 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.

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 #3f8be9, or check how it holds up for accessibility.

Generate a palette → Check contrast