#AC3636#AC3636

#AC3636 is a mid, vivid red. Relative luminance 0.117; OKLCH L 50.7% C 0.154 H 24.5°. Best body text is #FFFFFF at 6.30:1 contrast (WCAG AA passes).

Color values

HEX	#AC3636
RGB	rgb(172, 54, 54)
HSL	hsl(0, 52%, 44%)
HSV	hsv(0, 69%, 67%)
CMYK	cmyk(0%, 68.6%, 68.6%, 32.5%)
CIE-LAB	lab(40.70, 47.96, 27.39)
CIE-LCH	lch(40.70, 55.23, 29.73°)
OKLab	oklab(50.73% 0.1403 0.0639)
OKLCH	oklch(50.73% 0.154 24.5)
XYZ	xyz(19.0003, 11.6781, 4.7429)
Luminance	0.1168 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AC3636 #36ACAC

analogous

#AC3671 #AC3636 #AC7136

triadic

#AC3636 #36AC36 #3636AC

tetradic

#AC3636 #71AC36 #36ACAC #7136AC

square

#AC3636 #71AC36 #36ACAC #7136AC

split-complementary

#AC3636 #36AC71 #3671AC

monochromatic

#4F1919 #7D2727 #AC3636 #CA5555 #D88484

Accessibility & contrast

On white

6.30

#AC3636 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.34

#AC3636 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AC3636

6.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AC3636	#FFFFFF	#000000	##FFFFFF
##AC3636	1.00	6.30	3.34	6.30
#FFFFFF	6.30	1.00	21.00	1.00
#000000	3.34	21.00	1.00	21.00
##FFFFFF	6.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#565035

Deuteranopia (green-blind)

#746932

Tritanopia (blue-blind)

#BD1537

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #ac3636;
/* rgb */ color: rgb(172, 54, 54);
/* oklch */ color: oklch(50.7% 0.154 24.5);

Tailwind

colors: {
  custom: {
    50: '#cc746d',
    500: '#ac3636',
    950: '#000000',
  },
}

SCSS

$custom: #ac3636;
$custom-light: #cc746d;
$custom-dark: #000000;

JSON

{
  "hex": "#ac3636",
  "rgb": {
    "r": 172,
    "g": 54,
    "b": 54
  },
  "hsl": {
    "h": 0,
    "s": 52.212,
    "l": 44.314
  },
  "oklch": {
    "l": 0.50727,
    "c": 0.15411,
    "h": 24.5
  },
  "luminance": 0.11675
}

Semantic roles & 50–950 ramp

primary

#AC3636

secondary

#7CC2C2

accent

#DCDC4C

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#150907

muted

#837B7A

Preview Lab

Preview with #AC3636

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

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