#AC3531#AC3531

#AC3531 is a mid, vivid red. Relative luminance 0.115; OKLCH L 50.5% C 0.156 H 26.3°. Best body text is #FFFFFF at 6.35:1 contrast (WCAG AA passes).

Color values

HEX	#AC3531
RGB	rgb(172, 53, 49)
HSL	hsl(2, 56%, 43%)
HSV	hsv(2, 72%, 67%)
CMYK	cmyk(0%, 69.2%, 71.5%, 32.5%)
CIE-LAB	lab(40.48, 48.11, 30.12)
CIE-LCH	lch(40.48, 56.76, 32.05°)
OKLab	oklab(50.54% 0.1397 0.069)
OKLCH	oklch(50.54% 0.156 26.3)
XYZ	xyz(18.8428, 11.5414, 4.1407)
Luminance	0.1154 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AC3531 #31A8AC

analogous

#AC316A #AC3531 #AC7231

triadic

#AC3531 #31AC35 #3531AC

tetradic

#AC3531 #6AAC31 #31A8AC #7231AC

square

#AC3531 #6AAC31 #31A8AC #7231AC

split-complementary

#AC3531 #31AC72 #316AAC

monochromatic

#4D1816 #7C2623 #AC3531 #CC524E #DA807D

Accessibility & contrast

On white

6.35

#AC3531 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.31

#AC3531 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AC3531

6.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AC3531	#FFFFFF	#000000	##FFFFFF
##AC3531	1.00	6.35	3.31	6.35
#FFFFFF	6.35	1.00	21.00	1.00
#000000	3.31	21.00	1.00	21.00
##FFFFFF	6.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#564F30

Deuteranopia (green-blind)

#74692D

Tritanopia (blue-blind)

#BD1035

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #ac3531;
/* rgb */ color: rgb(172, 53, 49);
/* oklch */ color: oklch(50.5% 0.156 26.3);

Tailwind

colors: {
  custom: {
    50: '#cc7469',
    500: '#ac3531',
    950: '#000000',
  },
}

SCSS

$custom: #ac3531;
$custom-light: #cc7469;
$custom-dark: #000000;

JSON

{
  "hex": "#ac3531",
  "rgb": {
    "r": 172,
    "g": 53,
    "b": 49
  },
  "hsl": {
    "h": 1.951,
    "s": 55.656,
    "l": 43.333
  },
  "oklch": {
    "l": 0.50538,
    "c": 0.15579,
    "h": 26.3
  },
  "luminance": 0.11539
}

Semantic roles & 50–950 ramp

primary

#AC3531

secondary

#76C0C3

accent

#DADF49

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150906

muted

#837B7A

Preview Lab

Preview with #AC3531

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

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