#0042bc

Color #0042bc

A vivid, highly saturated dark blue.

Closest named color Royal Blue #4169e1 · ΔE 16.47 Nearest Tailwind class blue-800 #193cb8 · ΔE 2.3

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

Conversions

HEX

#0042bc

RGB

rgb(0, 66, 188)

HSL

hsl(218.9, 100%, 36.9%)

HSV / HSB

hsv(218.9, 100%, 73.7%)

CMYK

cmyk(100%, 64.9%, 0%, 26.3%)

LAB

lab(32.98, 32.73, -68.24)

LCH

lch(32.98, 75.68, 295.62)

OKLCH

oklch(43.4%, 0.2, 261.95)

HWB

hwb(218.9, 0%, 26.3%)

Harmony colors

Complementary

#bc7a00

Analogous

#00a0bc

#0042bc

#1c00bc

Triadic

#0042bc

#bc0042

#42bc00

Split-complementary

#0042bc

#bc1c00

#a0bc00

Tetradic

#0042bc

#7a00bc

#bc7a00

#42bc00

Square

#0042bc

#bc00a0

#bc7a00

#00bc1c

Shades

Color #0042bc mixed toward black.

#00379d

#002c7d

#00215e

#00163f

#000b1f

Tints

Color #0042bc mixed toward white.

#0055f2

#2874ff

#5e97ff

#94b9ff

#c9dcff

Tones

Color #0042bc mixed toward gray.

#1047ad

#1f4b9d

#2f508d

#3f557d

#4e596e

Accessibility

Aa White text on this color

8.38:1

Aa Black text on this color

2.51:1

White text reads better on this background (8.38:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#2a2ba9 · ΔE 7.5

Deuteranopia

#2722a3 · ΔE 9.6

Tritanopia

#099793 · ΔE 41.5

Achromatopsia

#4e4e4e · ΔE 28

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

Code

CSS

background-color: #0042bc;

Tailwind (arbitrary value)

bg-[#0042bc]

Related colors

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Royal Blue #4169e1

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Frequently asked questions

#0042bc (#0042bc) is rgb(0, 66, 188) in RGB.

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

Generate a palette → Check contrast