#AA231B#AA231B

#AA231B is a mid, vivid red. Relative luminance 0.098; OKLCH L 48.2% C 0.172 H 28.8°. Best body text is #FFFFFF at 7.08:1 contrast (WCAG AA passes).

Color values

HEX	#AA231B
RGB	rgb(170, 35, 27)
HSL	hsl(3, 73%, 39%)
HSV	hsv(3, 84%, 67%)
CMYK	cmyk(0%, 79.4%, 84.1%, 33.3%)
CIE-LAB	lab(37.54, 53.03, 39.37)
CIE-LCH	lch(37.54, 66.05, 36.59°)
OKLab	oklab(48.2% 0.1508 0.083)
OKLCH	oklch(48.2% 0.172 28.8)
XYZ	xyz(17.3786, 9.8301, 2.0191)
Luminance	0.0983 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AA231B #1BA2AA

analogous

#AA1B5A #AA231B #AA6A1B

triadic

#AA231B #1BAA23 #231BAA

tetradic

#AA231B #5AAA1B #1BA2AA #6A1BAA

square

#AA231B #5AAA1B #1BA2AA #6A1BAA

split-complementary

#AA231B #1BAA6A #1B5AAA

monochromatic

#400D0A #751813 #AA231B #DC3026 #E5625B

Accessibility & contrast

On white

7.08

#AA231B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.97

#AA231B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #AA231B

7.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AA231B	#FFFFFF	#000000	##FFFFFF
##AA231B	1.00	7.08	2.97	7.08
#FFFFFF	7.08	1.00	21.00	1.00
#000000	2.97	21.00	1.00	21.00
##FFFFFF	7.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E4518

Deuteranopia (green-blind)

#6F6313

Tritanopia (blue-blind)

#BC0023

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #aa231b;
/* rgb */ color: rgb(170, 35, 27);
/* oklch */ color: oklch(48.2% 0.172 28.8);

Tailwind

colors: {
  custom: {
    50: '#cd6b59',
    500: '#aa231b',
    950: '#000000',
  },
}

SCSS

$custom: #aa231b;
$custom-light: #cd6b59;
$custom-dark: #000000;

JSON

{
  "hex": "#aa231b",
  "rgb": {
    "r": 170,
    "g": 35,
    "b": 27
  },
  "hsl": {
    "h": 3.357,
    "s": 72.589,
    "l": 38.627
  },
  "oklch": {
    "l": 0.48195,
    "c": 0.17217,
    "h": 28.8
  },
  "luminance": 0.09827
}

Semantic roles & 50–950 ramp

primary

#AA231B

secondary

#58C2C9

accent

#E5EF39

background

#FDF6F5

surface

#FBECE9

border

#D4C7C5

text

#160703

muted

#847A78

Preview Lab

Preview with #AA231B

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →