#A3231A#A3231A

#A3231A is a mid, vivid red. Relative luminance 0.091; OKLCH L 46.9% C 0.165 H 29.1°. Best body text is #FFFFFF at 7.47:1 contrast (WCAG AA passes).

Color values

HEX#A3231A
RGBrgb(163, 35, 26)
HSLhsl(4, 72%, 37%)
HSVhsv(4, 84%, 64%)
CMYKcmyk(0%, 78.5%, 84%, 36.1%)
CIE-LABlab(36.11, 50.85, 38.06)
CIE-LCHlch(36.11, 63.52, 36.81°)
OKLaboklab(46.88% 0.1446 0.0805)
OKLCHoklch(46.88% 0.165 29.1)
XYZxyz(15.8937, 9.0657, 1.8901)
Luminance0.0906 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#A3231A #1A9AA3
analogous
#A31A55 #A3231A #A3681A
triadic
#A3231A #1AA323 #231AA3
tetradic
#A3231A #55A31A #1A9AA3 #681AA3
square
#A3231A #55A31A #1A9AA3 #681AA3
split-complementary
#A3231A #1AA368 #1A55A3
monochromatic
#390C09 #6E1812 #A3231A #D82E22 #E45D54

Accessibility & contrast

On white

7.47
#A3231A on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.81
#A3231A on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A3231A
7.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##A3231A#FFFFFF#000000##FFFFFF
##A3231A1.007.472.817.47
#FFFFFF7.471.0021.001.00
#0000002.8121.001.0021.00
##FFFFFF7.471.0021.001.00

Color blindness preview

Protanopia (red-blind)
#4C4317
Deuteranopia (green-blind)
#6B5F13
Tritanopia (blue-blind)
#B40023
Achromatopsia (no color)
#555555

Design tokens & code

CSS
--color: #a3231a;
/* rgb */ color: rgb(163, 35, 26);
/* oklch */ color: oklch(46.9% 0.165 29.1);
Tailwind
colors: {
  custom: {
    50: '#c86a58',
    500: '#a3231a',
    950: '#000000',
  },
}
SCSS
$custom: #a3231a;
$custom-light: #c86a58;
$custom-dark: #000000;
JSON
{
  "hex": "#a3231a",
  "rgb": {
    "r": 163,
    "g": 35,
    "b": 26
  },
  "hsl": {
    "h": 3.942,
    "s": 72.487,
    "l": 37.059
  },
  "oklch": {
    "l": 0.46881,
    "c": 0.16547,
    "h": 29.1
  },
  "luminance": 0.09063
}

Semantic roles & 50–950 ramp

primary
#A3231A
secondary
#52BFC7
accent
#E3EF39
background
#FDF6F5
surface
#FBECE9
border
#D4C7C5
text
#150703
muted
#837A78

Preview Lab

Preview with #A3231A

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

Preview Lab → · Contrast checker → · Palette generator →

#A3231A Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva