#AC371E#AC371E

#AC371E is a mid, vivid red. Relative luminance 0.116; OKLCH L 50.5% C 0.157 H 33.7°. Best body text is #FFFFFF at 6.33:1 contrast (WCAG AA passes).

Color values

HEX	#AC371E
RGB	rgb(172, 55, 30)
HSL	hsl(11, 70%, 40%)
HSV	hsv(11, 83%, 67%)
CMYK	cmyk(0%, 68%, 82.6%, 32.5%)
CIE-LAB	lab(40.57, 46.52, 40.79)
CIE-LCH	lch(40.57, 61.88, 41.25°)
OKLab	oklab(50.54% 0.1309 0.0872)
OKLCH	oklch(50.54% 0.157 33.7)
XYZ	xyz(18.6159, 11.5996, 2.4868)
Luminance	0.1160 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AC371E #1E93AC

analogous

#AC1E4C #AC371E #AC7E1E

triadic

#AC371E #1EAC37 #371EAC

tetradic

#AC371E #4CAC1E #1E93AC #7E1EAC

square

#AC371E #4CAC1E #1E93AC #7E1EAC

split-complementary

#AC371E #1EAC7E #1E4CAC

monochromatic

#44160C #782615 #AC371E #DA4B2D #E37861

Accessibility & contrast

On white

6.33

#AC371E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.32

#AC371E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AC371E

6.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AC371E	#FFFFFF	#000000	##FFFFFF
##AC371E	1.00	6.33	3.32	6.33
#FFFFFF	6.33	1.00	21.00	1.00
#000000	3.32	21.00	1.00	21.00
##FFFFFF	6.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#594F1A

Deuteranopia (green-blind)

#766918

Tritanopia (blue-blind)

#BE1032

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #ac371e;
/* rgb */ color: rgb(172, 55, 30);
/* oklch */ color: oklch(50.5% 0.157 33.7);

Tailwind

colors: {
  custom: {
    50: '#cd745c',
    500: '#ac371e',
    950: '#000000',
  },
}

SCSS

$custom: #ac371e;
$custom-light: #cd745c;
$custom-dark: #000000;

JSON

{
  "hex": "#ac371e",
  "rgb": {
    "r": 172,
    "g": 55,
    "b": 30
  },
  "hsl": {
    "h": 10.563,
    "s": 70.297,
    "l": 39.608
  },
  "oklch": {
    "l": 0.50542,
    "c": 0.15726,
    "h": 33.7
  },
  "luminance": 0.11597
}

Semantic roles & 50–950 ramp

primary

#AC371E

secondary

#5EB5C8

accent

#CEED3B

background

#FDF7F5

surface

#FBEDE9

border

#D4C8C5

text

#150904

muted

#837B79

Preview Lab

Preview with #AC371E

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

Preview Lab → · Contrast checker → · Palette generator →