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AA0000

#AA0000 Heartbeat

#AA0000 is a dark, vivid red named Heartbeat. In the RGB color model it is made of 66.7% red, 0.0% green and 0.0% blue (rgb(170, 0, 0)). Its HSL value is 0° hue, 100% saturation and 33% lightness, and in CMYK it is 0% cyan, 100% magenta, 100% yellow and 33% black. #AA0000 is a warm color. White text reads best on it, with a contrast ratio of 7.75:1.

Make a palette with #AA0000

#AA0000 color conversion

HEX
RGB
HSL
HSB / HSV
HWB
CMYK
XYZ
CIELAB
CIELCh
CIELUV
OKLCH

Variations of #AA0000

Shades

Mixed with black: richer and darker.

AA00009300007D00006800005300003F00002D00001B00000B0000010000

Tints

Mixed with white: lighter and softer.

AA0000B63126C14D3FCB6557D57B6EDE9185E6A79DEDBDB5F4D3CDFAE9E6

Tones

Mixed with gray: calmer and more muted.

AA0000A82219A53328A340359F4B409C564B985F569368618D706B877876

Hues

The same lightness and chroma, rotated around the color wheel.

96137B9E0769A30056A60042A8002BAA00009931008E3F008447007D4D00755100

Temperatures

Cooler on the left, warmer on the right.

9B3D4C9E3642A12F36A4252AA7181AAA0000AE0E00B11901B52101B92702BC2E02

#AA0000 color harmonies

Complementary

The opposite hue — maximum contrast and energy.

AA000000AAAA
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Split complementary

The two hues next to the complement — contrast with less tension.

AA000000AA550055AA
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Analogous

Neighbouring hues — calm, cohesive and natural.

AA0000AA0055AA5500
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Triadic

Three hues evenly spaced at 120° — vibrant yet balanced.

AA000000AA000000AA
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Tetradic

Two complementary pairs — rich, best with one dominant color.

AA0000AAAA0000AAAA0000AA
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Square

Four hues spaced at 90° — bold and playful.

AA000055AA0000AAAA5500AA
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#AA0000 for color-blind viewers (and dogs)

How #AA0000 appears with each type of color vision deficiency (Machado 2009 model) — and to your dog. Try the dog vision simulator →

  • Dog vision 63% similarHow dogs see it · simulated as #6B5E00
  • Protanopia 58% similar1.3% of men, 0.02% of women · simulated as #463D00
  • Protanomaly 74% similar1.3% of men, 0.02% of women · simulated as #6E3900
  • Deuteranopia 63% similar1.2% of men, 0.01% of women · simulated as #6B5E00
  • Deuteranomaly 75% similar5% of men, 0.35% of women · simulated as #814C00
  • Tritanopia 92% similar0.001% of men, 0.03% of women · simulated as #BC0006
  • Tritanomaly 97% similar0.0001% of men, 0.0001% of women · simulated as #B20002
  • Achromatopsia 62% similar0.003% of men, 0.003% of women · simulated as #535353
  • Achromatomaly 73% similar0.001% of men, 0.001% of women · simulated as #714848

#AA0000 contrast checker

AaThe quick brown fox jumps over the lazy dog.
7.75:1 Very good#AA0000 text on white
AA normalPassAAA normalPass
AA largePassAAA largePass
AaThe quick brown fox jumps over the lazy dog.
2.71:1 Very poor#AA0000 text on black
AA normalFailAAA normalFail
AA largeFailAAA largeFail

Need another background? Pick any pair in the palette generator and open the contrast panel.

Colors similar to #AA0000

Palettes with #AA0000

#AA0000 in CSS

/* Heartbeat */
.color { color: #AA0000; }
.background { background-color: #AA0000; }
.border { border: 1px solid #AA0000; }

/* Other notations */
color: rgb(170 0 0);
color: hsl(0 100% 33%);
color: oklch(0.463 0.190 29.2);

#AA0000 FAQ

What color is #AA0000?

#AA0000 is a dark, vivid red. Its closest named color is Heartbeat. It belongs to the red color family and is a warm color.

What is the RGB value of #AA0000?

#AA0000 is rgb(170, 0, 0) in RGB, hsl(0, 100%, 33%) in HSL and cmyk(0%, 100%, 100%, 33%) in CMYK.

What is the complementary color of #AA0000?

The complementary color of #AA0000 is #00AAAA, which sits opposite it on the color wheel.

Which text color works on #AA0000?

White text has the best contrast on #AA0000: 7.75:1, which meets the WCAG AA requirement of 4.5:1 for normal text.

Is #AA0000 a warm or cool color?

#AA0000 is a warm color.