#AC3131#AC3131

#AC3131 is a mid, vivid red. Relative luminance 0.112; OKLCH L 50.1% C 0.160 H 25.0°. Best body text is #FFFFFF at 6.49:1 contrast (WCAG AA passes).

Color values

HEX	#AC3131
RGB	rgb(172, 49, 49)
HSL	hsl(0, 56%, 43%)
HSV	hsv(0, 72%, 67%)
CMYK	cmyk(0%, 71.5%, 71.5%, 32.5%)
CIE-LAB	lab(39.90, 49.69, 29.44)
CIE-LCH	lch(39.90, 57.75, 30.65°)
OKLab	oklab(50.11% 0.1447 0.0676)
OKLCH	oklch(50.11% 0.16 25)
XYZ	xyz(18.6680, 11.1918, 4.0824)
Luminance	0.1119 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AC3131 #31ACAC

analogous

#AC316E #AC3131 #AC6E31

triadic

#AC3131 #31AC31 #3131AC

tetradic

#AC3131 #6EAC31 #31ACAC #6E31AC

square

#AC3131 #6EAC31 #31ACAC #6E31AC

split-complementary

#AC3131 #31AC6E #316EAC

monochromatic

#4D1616 #7C2323 #AC3131 #CC4E4E #DA7D7D

Accessibility & contrast

On white

6.49

#AC3131 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.24

#AC3131 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AC3131

6.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AC3131	#FFFFFF	#000000	##FFFFFF
##AC3131	1.00	6.49	3.24	6.49
#FFFFFF	6.49	1.00	21.00	1.00
#000000	3.24	21.00	1.00	21.00
##FFFFFF	6.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#544D30

Deuteranopia (green-blind)

#73682D

Tritanopia (blue-blind)

#BD0333

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #ac3131;
/* rgb */ color: rgb(172, 49, 49);
/* oklch */ color: oklch(50.1% 0.160 25.0);

Tailwind

colors: {
  custom: {
    50: '#cd7269',
    500: '#ac3131',
    950: '#000000',
  },
}

SCSS

$custom: #ac3131;
$custom-light: #cd7269;
$custom-dark: #000000;

JSON

{
  "hex": "#ac3131",
  "rgb": {
    "r": 172,
    "g": 49,
    "b": 49
  },
  "hsl": {
    "h": 0,
    "s": 55.656,
    "l": 43.333
  },
  "oklch": {
    "l": 0.50107,
    "c": 0.15965,
    "h": 25
  },
  "luminance": 0.11189
}

Semantic roles & 50–950 ramp

primary

#AC3131

secondary

#76C3C3

accent

#DFDF49

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150806

muted

#837B7A

Preview Lab

Preview with #AC3131

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

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