#AC3631#AC3631

#AC3631 is a mid, vivid red. Relative luminance 0.116; OKLCH L 50.6% C 0.155 H 26.6°. Best body text is #FFFFFF at 6.31:1 contrast (WCAG AA passes).

Color values

HEX	#AC3631
RGB	rgb(172, 54, 49)
HSL	hsl(2, 56%, 43%)
HSV	hsv(2, 72%, 67%)
CMYK	cmyk(0%, 68.6%, 71.5%, 32.5%)
CIE-LAB	lab(40.63, 47.70, 30.29)
CIE-LCH	lch(40.63, 56.51, 32.42°)
OKLab	oklab(50.65% 0.1384 0.0694)
OKLCH	oklch(50.65% 0.155 26.6)
XYZ	xyz(18.8888, 11.6335, 4.1560)
Luminance	0.1163 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AC3631 #31A7AC

analogous

#AC3169 #AC3631 #AC7331

triadic

#AC3631 #31AC36 #3631AC

tetradic

#AC3631 #69AC31 #31A7AC #7331AC

square

#AC3631 #69AC31 #31A7AC #7331AC

split-complementary

#AC3631 #31AC73 #3169AC

monochromatic

#4D1816 #7C2723 #AC3631 #CC534E #DA817D

Accessibility & contrast

On white

6.31

#AC3631 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.33

#AC3631 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AC3631

6.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AC3631	#FFFFFF	#000000	##FFFFFF
##AC3631	1.00	6.31	3.33	6.31
#FFFFFF	6.31	1.00	21.00	1.00
#000000	3.33	21.00	1.00	21.00
##FFFFFF	6.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#57502F

Deuteranopia (green-blind)

#75692D

Tritanopia (blue-blind)

#BD1336

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #ac3631;
/* rgb */ color: rgb(172, 54, 49);
/* oklch */ color: oklch(50.6% 0.155 26.6);

Tailwind

colors: {
  custom: {
    50: '#cc7469',
    500: '#ac3631',
    950: '#000000',
  },
}

SCSS

$custom: #ac3631;
$custom-light: #cc7469;
$custom-dark: #000000;

JSON

{
  "hex": "#ac3631",
  "rgb": {
    "r": 172,
    "g": 54,
    "b": 49
  },
  "hsl": {
    "h": 2.439,
    "s": 55.656,
    "l": 43.333
  },
  "oklch": {
    "l": 0.5065,
    "c": 0.15481,
    "h": 26.6
  },
  "luminance": 0.11631
}

Semantic roles & 50–950 ramp

primary

#AC3631

secondary

#76C0C3

accent

#D9DF49

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150906

muted

#837B7A

Preview Lab

Preview with #AC3631

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

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