What color is #FF0303?

#FF0303 is a vivid red known as Left on Red. It belongs to the red family of colors.

What is the RGB value of #FF0303?

The RGB value is 255, 3, 3: 255 red, 3 green and 3 blue on a 0 to 255 scale.

What is the complementary color of #FF0303?

The complementary color is #03FFFF, found by rotating the hue 180° on the color wheel.

Is black or white text better on #FF0303?

Black text. Black text has a contrast ratio of 5.27:1 and white text 3.99:1. WCAG asks for at least 4.5:1 for normal text.

#FF0303 color

#FF0303 rgb(255, 3, 3)

Shades of red

The hex color #FF0303 is a vivid red.

In the RGB color model it is made of 100% red, 1.2% green and 1.2% blue (255, 3, 3).

Its hue angle is 0°, with 100% saturation and 51% lightness. For print, the CMYK equivalent is 0% cyan, 99% magenta, 99% yellow and 0% black.

This exact color is also called Left on Red.

Black text is the more readable choice on this background (contrast 5.27:1).

#FF0303 color codes

HEX	`#FF0303`
RGB	`rgb(255, 3, 3)`
RGB percent	`rgb(100%, 1.2%, 1.2%)`
HSL	`hsl(0, 100%, 51%)`
HSV / HSB	`hsv(0, 99%, 100%)`
CMYK	`cmyk(0%, 99%, 99%, 0%)`
CIE LAB	`lab(53.32, 79.91, 66.48)`
CIE LCH	`lch(53.32, 103.94, 39.76)`
CIE XYZ	`xyz(41.295, 21.339, 2.031)`
Decimal	`16712451`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #FF0303, based on their position on the color wheel.

Complementary

The color opposite on the color wheel (180°). Strongest contrast.

Analogous

Neighbors 30° either side. Calm, natural combinations.

Split complementary

The two colors next to the complement (150° and 210°).

Triadic

Three colors evenly spaced, 120° apart.

Tetradic (square)

Four colors 90° apart.

Shades, tints and tones

Shades (darker, mixed with black)

Tints (lighter, mixed with white)

Tones (mixed with gray)

Contrast and accessibility

Text on #FF0303	Ratio	AA	AAA	AA large
Sample text	5.27:1	Pass	Fail	Pass
Sample text	3.99:1	Fail	Fail	Pass

#FF0303 as text on	Ratio	AA	AAA	AA large
Sample text	3.99:1	Fail	Fail	Pass
Sample text	5.27:1	Pass	Fail	Pass

WCAG 2 asks for 4.5:1 for normal text (AA), 7:1 for AAA, and 3:1 for large text. Check other pairs.

Color blindness simulation

How #FF0303 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #ff0303; }
.text { color: #ff0303; }
.border { border: 2px solid #ff0303; }
.transparent { background-color: rgb(255 3 3 / 50%); }
.gradient { background: linear-gradient(to right, #ff0303, #ff8103); }

Background

Text color

Border

Similar colors

Questions

What color is #FF0303?: #FF0303 is a vivid red known as Left on Red. It belongs to the red family of colors.
What is the RGB value of #FF0303?: The RGB value is 255, 3, 3: 255 red, 3 green and 3 blue on a 0 to 255 scale.
What is the complementary color of #FF0303?: The complementary color is #03FFFF, found by rotating the hue 180° on the color wheel.
Is black or white text better on #FF0303?: Black text. Black text has a contrast ratio of 5.27:1 and white text 3.99:1. WCAG asks for at least 4.5:1 for normal text.