#AC271B#AC271B

#AC271B is a mid, vivid red. Relative luminance 0.103; OKLCH L 48.9% C 0.171 H 29.7°. Best body text is #FFFFFF at 6.86:1 contrast (WCAG AA passes).

Color values

HEX	#AC271B
RGB	rgb(172, 39, 27)
HSL	hsl(5, 73%, 39%)
HSV	hsv(5, 84%, 67%)
CMYK	cmyk(0%, 77.3%, 84.3%, 32.5%)
CIE-LAB	lab(38.38, 52.40, 40.29)
CIE-LCH	lch(38.38, 66.10, 37.56°)
OKLab	oklab(48.9% 0.1486 0.0849)
OKLCH	oklch(48.9% 0.171 29.7)
XYZ	xyz(17.9388, 10.3037, 2.0810)
Luminance	0.1030 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AC271B #1BA0AC

analogous

#AC1B57 #AC271B #AC701B

triadic

#AC271B #1BAC27 #271BAC

tetradic

#AC271B #57AC1B #1BA0AC #701BAC

square

#AC271B #57AC1B #1BA0AC #701BAC

split-complementary

#AC271B #1BAC70 #1B57AC

monochromatic

#420F0A #771B13 #AC271B #DD3627 #E5675C

Accessibility & contrast

On white

6.86

#AC271B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#AC271B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AC271B

6.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AC271B	#FFFFFF	#000000	##FFFFFF
##AC271B	1.00	6.86	3.06	6.86
#FFFFFF	6.86	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#514818

Deuteranopia (green-blind)

#716513

Tritanopia (blue-blind)

#BE0026

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #ac271b;
/* rgb */ color: rgb(172, 39, 27);
/* oklch */ color: oklch(48.9% 0.171 29.7);

Tailwind

colors: {
  custom: {
    50: '#ce6d59',
    500: '#ac271b',
    950: '#000000',
  },
}

SCSS

$custom: #ac271b;
$custom-light: #ce6d59;
$custom-dark: #000000;

JSON

{
  "hex": "#ac271b",
  "rgb": {
    "r": 172,
    "g": 39,
    "b": 27
  },
  "hsl": {
    "h": 4.966,
    "s": 72.864,
    "l": 39.02
  },
  "oklch": {
    "l": 0.48896,
    "c": 0.17116,
    "h": 29.7
  },
  "luminance": 0.10301
}

Semantic roles & 50–950 ramp

primary

#AC271B

secondary

#5AC0C9

accent

#E0F038

background

#FEF6F5

surface

#FCECE9

border

#D5C7C5

text

#160804

muted

#847A79

Preview Lab

Preview with #AC271B

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

Preview Lab → · Contrast checker → · Palette generator →