#AC331F#AC331F

#AC331F is a mid, vivid red. Relative luminance 0.112; OKLCH L 50.1% C 0.161 H 32.0°. Best body text is #FFFFFF at 6.47:1 contrast (WCAG AA passes).

Color values

HEX	#AC331F
RGB	rgb(172, 51, 31)
HSL	hsl(9, 69%, 40%)
HSV	hsv(9, 82%, 67%)
CMYK	cmyk(0%, 70.3%, 82%, 32.5%)
CIE-LAB	lab(39.98, 48.19, 39.72)
CIE-LCH	lch(39.98, 62.45, 39.50°)
OKLab	oklab(50.1% 0.1362 0.0851)
OKLCH	oklch(50.1% 0.161 32)
XYZ	xyz(18.4466, 11.2401, 2.4943)
Luminance	0.1124 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AC331F #1F98AC

analogous

#AC1F51 #AC331F #AC7A1F

triadic

#AC331F #1FAC33 #331FAC

tetradic

#AC331F #51AC1F #1F98AC #7A1FAC

square

#AC331F #51AC1F #1F98AC #7A1FAC

split-complementary

#AC331F #1FAC7A #1F51AC

monochromatic

#44140C #782416 #AC331F #D9472F #E37563

Accessibility & contrast

On white

6.47

#AC331F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.25

#AC331F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AC331F

6.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AC331F	#FFFFFF	#000000	##FFFFFF
##AC331F	1.00	6.47	3.25	6.47
#FFFFFF	6.47	1.00	21.00	1.00
#000000	3.25	21.00	1.00	21.00
##FFFFFF	6.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#574D1B

Deuteranopia (green-blind)

#756819

Tritanopia (blue-blind)

#BE0230

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #ac331f;
/* rgb */ color: rgb(172, 51, 31);
/* oklch */ color: oklch(50.1% 0.161 32.0);

Tailwind

colors: {
  custom: {
    50: '#ce725d',
    500: '#ac331f',
    950: '#000000',
  },
}

SCSS

$custom: #ac331f;
$custom-light: #ce725d;
$custom-dark: #000000;

JSON

{
  "hex": "#ac331f",
  "rgb": {
    "r": 172,
    "g": 51,
    "b": 31
  },
  "hsl": {
    "h": 8.511,
    "s": 69.458,
    "l": 39.804
  },
  "oklch": {
    "l": 0.50102,
    "c": 0.16066,
    "h": 32
  },
  "luminance": 0.11237
}

Semantic roles & 50–950 ramp

primary

#AC331F

secondary

#5FB9C8

accent

#D3EC3C

background

#FDF7F5

surface

#FBEDE9

border

#D4C8C5

text

#150804

muted

#837B79

Preview Lab

Preview with #AC331F

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

Preview Lab → · Contrast checker → · Palette generator →