#428fd7

Color #428fd7

A moderately saturated medium blue.

Closest named color Cornflower Blue #6495ed · ΔE 11.99 Nearest Tailwind class sky-600 #0084d1 · ΔE 4.8

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

Conversions

HEX

#428fd7

RGB

rgb(66, 143, 215)

HSL

hsl(209, 65.1%, 55.1%)

HSV / HSB

hsv(209, 69.3%, 84.3%)

CMYK

cmyk(69.3%, 33.5%, 0%, 15.7%)

LAB

lab(57.76, -0.45, -43.75)

LCH

lch(57.76, 43.75, 269.41)

OKLCH

oklch(63.5%, 0.1326, 249.38)

HWB

hwb(209, 25.9%, 15.7%)

Harmony colors

Complementary

#d78a42

Analogous

#42d7d5

#428fd7

#4244d7

Triadic

#428fd7

#d7428f

#8fd742

Split-complementary

#428fd7

#d74244

#d7d542

Tetradic

#428fd7

#8a42d7

#d78a42

#8fd742

Square

#428fd7

#d542d7

#d78a42

#44d742

Shades

Color #428fd7 mixed toward black.

#2978c1

#21609b

#194874

#10304d

#081827

Tints

Color #428fd7 mixed toward white.

#61a2de

#81b4e4

#a0c7eb

#c0daf2

#dfecf8

Tones

Color #428fd7 mixed toward gray.

#4e8fcb

#5b8ebe

#678eb2

#748da5

#808d99

Accessibility

Aa White text on this color

3.42:1

Aa Black text on this color

6.14:1

Black text reads better on this background (6.14:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#6c6dc9 · ΔE 16.8

Deuteranopia

#6861c5 · ΔE 20.2

Tritanopia

#48bcb9 · ΔE 26.8

Achromatopsia

#8b8b8b · ΔE 22

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

Code

CSS

background-color: #428fd7;

Tailwind (arbitrary value)

bg-[#428fd7]

Related colors

Dodger Blue #1e90ff

Alice Blue #f0f8ff

Light Slate Gray #778899

Slate Gray #708090

Steel Blue #4682b4

Light Steel Blue #b0c4de

Frequently asked questions

#428fd7 (#428fd7) is rgb(66, 143, 215) in RGB.

No, #428fd7 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 #428fd7, or check how it holds up for accessibility.

Generate a palette → Check contrast