What color is #AA0000?

#AA0000 is a dark, vivid red known as Heartbeat. It belongs to the red family of colors.

What is the RGB value of Heartbeat?

The RGB value is 170, 0, 0: 170 red, 0 green and 0 blue on a 0 to 255 scale.

What is the complementary color of Heartbeat?

The complementary color is #00AAAA, found by rotating the hue 180° on the color wheel.

Is black or white text better on #AA0000?

White text. Black text has a contrast ratio of 2.71:1 and white text 7.75:1. WCAG asks for at least 4.5:1 for normal text.

Heartbeat color: hex code #AA0000

#AA0000 rgb(170, 0, 0)

Shades of red

Heartbeat has the hex code #AA0000. It is a dark, vivid red.

In the RGB color model it is made of 66.7% red, 0% green and 0% blue (170, 0, 0).

Its hue angle is 0°, with 100% saturation and 33% lightness. For print, the CMYK equivalent is 0% cyan, 100% magenta, 100% yellow and 33% black.

White text is the more readable choice on this background (contrast 7.75:1).

Heartbeat (#AA0000) color codes

HEX	`#AA0000`
RGB	`rgb(170, 0, 0)`
RGB percent	`rgb(66.7%, 0%, 0%)`
HSL	`hsl(0, 100%, 33%)`
HSV / HSB	`hsv(0, 100%, 67%)`
CMYK	`cmyk(0%, 100%, 100%, 33%)`
CIE LAB	`lab(35.1, 59.11, 49.4)`
CIE LCH	`lch(35.1, 77.04, 39.89)`
CIE XYZ	`xyz(16.58, 8.549, 0.777)`
Decimal	`11141120`
Short hex	`#A00`

Color harmonies

Colors that go with Heartbeat, 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 #AA0000	Ratio	AA	AAA	AA large
Sample text	2.71:1	Fail	Fail	Fail
Sample text	7.75:1	Pass	Pass	Pass

#AA0000 as text on	Ratio	AA	AAA	AA large
Sample text	7.75:1	Pass	Pass	Pass
Sample text	2.71:1	Fail	Fail	Fail

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 #AA0000 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #aa0000; }
.text { color: #aa0000; }
.border { border: 2px solid #aa0000; }
.transparent { background-color: rgb(170 0 0 / 50%); }
.gradient { background: linear-gradient(to right, #aa0000, #aa5500); }

Background

Text color

Border

Similar colors

Closest common color name: Firebrick.

See #AA0000 on its hex code page

Questions

What color is #AA0000?: #AA0000 is a dark, vivid red known as Heartbeat. It belongs to the red family of colors.
What is the RGB value of Heartbeat?: The RGB value is 170, 0, 0: 170 red, 0 green and 0 blue on a 0 to 255 scale.
What is the complementary color of Heartbeat?: The complementary color is #00AAAA, found by rotating the hue 180° on the color wheel.
Is black or white text better on #AA0000?: White text. Black text has a contrast ratio of 2.71:1 and white text 7.75:1. WCAG asks for at least 4.5:1 for normal text.