#AC3640#AC3640

#AC3640 is a mid, vivid red. Relative luminance 0.118; OKLCH L 50.9% C 0.153 H 19.8°. Best body text is #FFFFFF at 6.26:1 contrast (WCAG AA passes).

Color values

HEX	#AC3640
RGB	rgb(172, 54, 64)
HSL	hsl(355, 52%, 44%)
HSV	hsv(355, 69%, 67%)
CMYK	cmyk(0%, 68.6%, 62.8%, 32.5%)
CIE-LAB	lab(40.87, 48.56, 21.48)
CIE-LCH	lch(40.87, 53.10, 23.86°)
OKLab	oklab(50.91% 0.1442 0.0518)
OKLCH	oklch(50.91% 0.153 19.8)
XYZ	xyz(19.2598, 11.7819, 6.1095)
Luminance	0.1178 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AC3640 #36ACA2

analogous

#AC367B #AC3640 #AC6736

triadic

#AC3640 #40AC36 #3640AC

tetradic

#AC3640 #7BAC36 #36ACA2 #6736AC

square

#AC3640 #7BAC36 #36ACA2 #6736AC

split-complementary

#AC3640 #36AC67 #367BAC

monochromatic

#4F191D #7D272F #AC3640 #CA555F #D8848B

Accessibility & contrast

On white

6.26

#AC3640 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.36

#AC3640 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AC3640

6.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AC3640	#FFFFFF	#000000	##FFFFFF
##AC3640	1.00	6.26	3.36	6.26
#FFFFFF	6.26	1.00	21.00	1.00
#000000	3.36	21.00	1.00	21.00
##FFFFFF	6.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#555140

Deuteranopia (green-blind)

#736A3D

Tritanopia (blue-blind)

#BD193B

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #ac3640;
/* rgb */ color: rgb(172, 54, 64);
/* oklch */ color: oklch(50.9% 0.153 19.8);

Tailwind

colors: {
  custom: {
    50: '#cb7474',
    500: '#ac3640',
    950: '#000000',
  },
}

SCSS

$custom: #ac3640;
$custom-light: #cb7474;
$custom-dark: #000000;

JSON

{
  "hex": "#ac3640",
  "rgb": {
    "r": 172,
    "g": 54,
    "b": 64
  },
  "hsl": {
    "h": 354.915,
    "s": 52.212,
    "l": 44.314
  },
  "oklch": {
    "l": 0.50906,
    "c": 0.1532,
    "h": 19.8
  },
  "luminance": 0.11779
}

Semantic roles & 50–950 ramp

primary

#AC3640

secondary

#7CC2BC

accent

#DCCF4C

background

#FDF7F7

surface

#FAEDED

border

#D3C8C8

text

#150908

muted

#837B7B

Preview Lab

Preview with #AC3640

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

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