#428aef

Color #428aef

A vivid, highly saturated medium blue.

Closest named color Dodger Blue #1e90ff · ΔE 6.38 Nearest Tailwind class blue-500 #2b7fff · ΔE 3.8

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

Conversions

HEX

#428aef

RGB

rgb(66, 138, 239)

HSL

hsl(215, 84.4%, 59.8%)

HSV / HSB

hsv(215, 72.4%, 93.7%)

CMYK

cmyk(72.4%, 42.3%, 0%, 6.3%)

LAB

lab(57.62, 10.98, -57.34)

LCH

lch(57.62, 58.38, 280.84)

OKLCH

oklch(63.8%, 0.168, 257.45)

HWB

hwb(215, 25.9%, 6.3%)

Harmony colors

Complementary

#efa742

Analogous

#42e1ef

#428aef

#5042ef

Triadic

#428aef

#ef428a

#8aef42

Split-complementary

#428aef

#ef5042

#e1ef42

Tetradic

#428aef

#a742ef

#efa742

#8aef42

Square

#428aef

#ef42e1

#efa742

#42ef50

Shades

Color #428aef mixed toward black.

#146dea

#1057bb

#0c428d

#082c5e

#04162f

Tints

Color #428aef mixed toward white.

#619ef2

#81b1f4

#a0c5f7

#c0d8fa

#dfecfc

Tones

Color #428aef mixed toward gray.

#508ce1

#5f8fd2

#6d91c4

#7c94b5

#8a96a7

Accessibility

Aa White text on this color

3.44:1

Aa Black text on this color

6.11:1

Black text reads better on this background (6.11:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#696adc · ΔE 14.3

Deuteranopia

#655fd7 · ΔE 17.5

Tritanopia

#48cbc7 · ΔE 33.5

Achromatopsia

#8a8a8a · ΔE 25.3

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

Code

CSS

background-color: #428aef;

Tailwind (arbitrary value)

bg-[#428aef]

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

#428aef (#428aef) is rgb(66, 138, 239) in RGB.

No, #428aef 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.

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Build something with this color

Generate a full palette from #428aef, or check how it holds up for accessibility.

Generate a palette → Check contrast