#0042e5

Color #0042e5

A vivid, highly saturated medium blue.

Closest named color Medium Blue #0000cd · ΔE 23.47 Nearest Tailwind class blue-700 #1447e6 · ΔE 1.4

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

Conversions

HEX

#0042e5

RGB

rgb(0, 66, 229)

HSL

hsl(222.7, 100%, 44.9%)

HSV / HSB

hsv(222.7, 100%, 89.8%)

CMYK

cmyk(100%, 71.2%, 0%, 10.2%)

LAB

lab(37.02, 48.02, -85.29)

LCH

lch(37.02, 97.88, 299.38)

OKLCH

oklch(47.6%, 0.2493, 263.34)

HWB

hwb(222.7, 0%, 10.2%)

Harmony colors

Complementary

#e5a300

Analogous

#00b5e5

#0042e5

#3000e5

Triadic

#0042e5

#e50042

#42e500

Split-complementary

#0042e5

#e53000

#b5e500

Tetradic

#0042e5

#a300e5

#e5a300

#42e500

Square

#0042e5

#e500b5

#e5a300

#00e530

Shades

Color #0042e5 mixed toward black.

#0037bf

#002c99

#002172

#00164c

#000b26

Tints

Color #0042e5 mixed toward white.

#1558ff

#447aff

#729bff

#a1bcff

#d0deff

Tones

Color #0042e5 mixed toward gray.

#134ad2

#2652bf

#395aac

#4c6299

#5f6a86

Accessibility

Aa White text on this color

7.21:1

Aa Black text on this color

2.91:1

White text reads better on this background (7.21:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#2a2bcc · ΔE 6.6

Deuteranopia

#2722c6 · ΔE 8.5

Tritanopia

#09b6b1 · ΔE 48.8

Achromatopsia

#575757 · ΔE 30.6

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

Code

CSS

background-color: #0042e5;

Tailwind (arbitrary value)

bg-[#0042e5]

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

#0042e5 (#0042e5) is rgb(0, 66, 229) in RGB.

No, #0042e5 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 #0042e5, or check how it holds up for accessibility.

Generate a palette → Check contrast