#0000ef

Color #0000ef

A vivid, highly saturated medium blue.

Closest named color Blue #0000ff · ΔE 6.81 Nearest Tailwind class indigo-700 #432dd7 · ΔE 5.3

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

Conversions

HEX

#0000ef

RGB

rgb(0, 0, 239)

HSL

hsl(240, 100%, 46.9%)

HSV / HSB

hsv(240, 100%, 93.7%)

CMYK

cmyk(100%, 100%, 0%, 6.3%)

LAB

lab(29.99, 75.4, -102.7)

LCH

lch(29.99, 127.41, 306.29)

OKLCH

oklch(43%, 0.2982, 264.05)

HWB

hwb(240, 0%, 6.3%)

Harmony colors

Complementary

#efef00

Analogous

#0078ef

#0000ef

#7800ef

Triadic

#0000ef

#ef0000

#00ef00

Split-complementary

#0000ef

#ef7800

#78ef00

Tetradic

#0000ef

#ef00ef

#efef00

#00ef00

Square

#0000ef

#ef0078

#efef00

#00ef78

Shades

Color #0000ef mixed toward black.

#0000c7

#00009f

#000078

#000050

#000028

Tints

Color #0000ef mixed toward white.

#1d1dff

#4a4aff

#7878ff

#a5a5ff

#d2d2ff

Tones

Color #0000ef mixed toward gray.

#1414db

#2828c7

#3c3cb3

#50509f

#64648c

Accessibility

Aa White text on this color

9.35:1

Aa Black text on this color

2.25:1

White text reads better on this background (9.35:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#0000d3 · ΔE 3.6

Deuteranopia

#0000cc · ΔE 4.5

Tritanopia

#00bab3 · ΔE 56.5

Achromatopsia

#474747 · ΔE 33

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

Code

CSS

background-color: #0000ef;

Tailwind (arbitrary value)

bg-[#0000ef]

Related colors

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Medium Blue #0000cd

Frequently asked questions

#0000ef (#0000ef) is rgb(0, 0, 239) in RGB.

No, #0000ef 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 #0000ef, or check how it holds up for accessibility.

Generate a palette → Check contrast