#AC3729#AC3729

#AC3729 is a mid, vivid red. Relative luminance 0.117; OKLCH L 50.7% C 0.155 H 30.1°. Best body text is #FFFFFF at 6.30:1 contrast (WCAG AA passes).

Color values

HEX	#AC3729
RGB	rgb(172, 55, 41)
HSL	hsl(6, 62%, 42%)
HSV	hsv(6, 76%, 67%)
CMYK	cmyk(0%, 68%, 76.2%, 32.5%)
CIE-LAB	lab(40.68, 46.92, 34.99)
CIE-LCH	lch(40.68, 58.53, 36.71°)
OKLab	oklab(50.66% 0.1343 0.0779)
OKLCH	oklch(50.66% 0.155 30.1)
XYZ	xyz(18.7818, 11.6659, 3.3602)
Luminance	0.1166 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AC3729 #299EAC

analogous

#AC295D #AC3729 #AC7929

triadic

#AC3729 #29AC37 #3729AC

tetradic

#AC3729 #5DAC29 #299EAC #7929AC

square

#AC3729 #5DAC29 #299EAC #7929AC

split-complementary

#AC3729 #29AC79 #295DAC

monochromatic

#491711 #7B271D #AC3729 #D25041 #DD7D72

Accessibility & contrast

On white

6.30

#AC3729 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.33

#AC3729 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AC3729

6.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AC3729	#FFFFFF	#000000	##FFFFFF
##AC3729	1.00	6.30	3.33	6.30
#FFFFFF	6.30	1.00	21.00	1.00
#000000	3.33	21.00	1.00	21.00
##FFFFFF	6.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#585027

Deuteranopia (green-blind)

#756925

Tritanopia (blue-blind)

#BD1335

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #ac3729;
/* rgb */ color: rgb(172, 55, 41);
/* oklch */ color: oklch(50.7% 0.155 30.1);

Tailwind

colors: {
  custom: {
    50: '#cd7564',
    500: '#ac3729',
    950: '#000000',
  },
}

SCSS

$custom: #ac3729;
$custom-light: #cd7564;
$custom-dark: #000000;

JSON

{
  "hex": "#ac3729",
  "rgb": {
    "r": 172,
    "g": 55,
    "b": 41
  },
  "hsl": {
    "h": 6.412,
    "s": 61.502,
    "l": 41.765
  },
  "oklch": {
    "l": 0.50657,
    "c": 0.15521,
    "h": 30.1
  },
  "luminance": 0.11663
}

Semantic roles & 50–950 ramp

primary

#AC3729

secondary

#6CBBC5

accent

#D3E543

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150905

muted

#837B7A

Preview Lab

Preview with #AC3729

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

Preview Lab → · Contrast checker → · Palette generator →