#AC3137#AC3137

#AC3137 is a mid, vivid red. Relative luminance 0.112; OKLCH L 50.2% C 0.159 H 22.5°. Best body text is #FFFFFF at 6.46:1 contrast (WCAG AA passes).

Color values

HEX	#AC3137
RGB	rgb(172, 49, 55)
HSL	hsl(357, 56%, 43%)
HSV	hsv(357, 72%, 67%)
CMYK	cmyk(0%, 71.5%, 68%, 32.5%)
CIE-LAB	lab(39.99, 50.00, 25.91)
CIE-LCH	lch(39.99, 56.31, 27.40°)
OKLab	oklab(50.2% 0.1469 0.0607)
OKLCH	oklch(50.2% 0.159 22.5)
XYZ	xyz(18.8032, 11.2459, 4.7943)
Luminance	0.1124 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AC3137 #31ACA6

analogous

#AC3174 #AC3137 #AC6831

triadic

#AC3137 #37AC31 #3137AC

tetradic

#AC3137 #74AC31 #31ACA6 #6831AC

square

#AC3137 #74AC31 #31ACA6 #6831AC

split-complementary

#AC3137 #31AC68 #3174AC

monochromatic

#4D1619 #7C2328 #AC3137 #CC4E54 #DA7D82

Accessibility & contrast

On white

6.46

#AC3137 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.25

#AC3137 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AC3137

6.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AC3137	#FFFFFF	#000000	##FFFFFF
##AC3137	1.00	6.46	3.25	6.46
#FFFFFF	6.46	1.00	21.00	1.00
#000000	3.25	21.00	1.00	21.00
##FFFFFF	6.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#534D36

Deuteranopia (green-blind)

#726833

Tritanopia (blue-blind)

#BD0634

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #ac3137;
/* rgb */ color: rgb(172, 49, 55);
/* oklch */ color: oklch(50.2% 0.159 22.5);

Tailwind

colors: {
  custom: {
    50: '#cc726d',
    500: '#ac3137',
    950: '#000000',
  },
}

SCSS

$custom: #ac3137;
$custom-light: #cc726d;
$custom-dark: #000000;

JSON

{
  "hex": "#ac3137",
  "rgb": {
    "r": 172,
    "g": 49,
    "b": 55
  },
  "hsl": {
    "h": 357.073,
    "s": 55.656,
    "l": 43.333
  },
  "oklch": {
    "l": 0.50203,
    "c": 0.15899,
    "h": 22.5
  },
  "luminance": 0.11243
}

Semantic roles & 50–950 ramp

primary

#AC3137

secondary

#76C3BF

accent

#DFD849

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150807

muted

#837B7A

Preview Lab

Preview with #AC3137

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

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