#AC3721#AC3721

#AC3721 is a mid, vivid red. Relative luminance 0.116; OKLCH L 50.6% C 0.157 H 32.8°. Best body text is #FFFFFF at 6.32:1 contrast (WCAG AA passes).

Color values

HEX	#AC3721
RGB	rgb(172, 55, 33)
HSL	hsl(9, 68%, 40%)
HSV	hsv(9, 81%, 67%)
CMYK	cmyk(0%, 68%, 80.8%, 32.5%)
CIE-LAB	lab(40.60, 46.62, 39.27)
CIE-LCH	lch(40.60, 60.96, 40.11°)
OKLab	oklab(50.57% 0.1318 0.0848)
OKLCH	oklch(50.57% 0.157 32.8)
XYZ	xyz(18.6561, 11.6156, 2.6982)
Luminance	0.1161 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AC3721 #2196AC

analogous

#AC2151 #AC3721 #AC7C21

triadic

#AC3721 #21AC37 #3721AC

tetradic

#AC3721 #51AC21 #2196AC #7C21AC

square

#AC3721 #51AC21 #2196AC #7C21AC

split-complementary

#AC3721 #21AC7C #2151AC

monochromatic

#45160D #792717 #AC3721 #D84D32 #E27966

Accessibility & contrast

On white

6.32

#AC3721 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.32

#AC3721 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AC3721

6.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AC3721	#FFFFFF	#000000	##FFFFFF
##AC3721	1.00	6.32	3.32	6.32
#FFFFFF	6.32	1.00	21.00	1.00
#000000	3.32	21.00	1.00	21.00
##FFFFFF	6.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#594F1D

Deuteranopia (green-blind)

#76691C

Tritanopia (blue-blind)

#BE1133

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #ac3721;
/* rgb */ color: rgb(172, 55, 33);
/* oklch */ color: oklch(50.6% 0.157 32.8);

Tailwind

colors: {
  custom: {
    50: '#cd745e',
    500: '#ac3721',
    950: '#000000',
  },
}

SCSS

$custom: #ac3721;
$custom-light: #cd745e;
$custom-dark: #000000;

JSON

{
  "hex": "#ac3721",
  "rgb": {
    "r": 172,
    "g": 55,
    "b": 33
  },
  "hsl": {
    "h": 9.496,
    "s": 67.805,
    "l": 40.196
  },
  "oklch": {
    "l": 0.5057,
    "c": 0.1567,
    "h": 32.8
  },
  "luminance": 0.11613
}

Semantic roles & 50–950 ramp

primary

#AC3721

secondary

#62B7C7

accent

#CFEB3D

background

#FDF7F5

surface

#FBEDE9

border

#D4C8C5

text

#150904

muted

#837B79

Preview Lab

Preview with #AC3721

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

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