#AC251C#AC251C

#AC251C is a mid, vivid red. Relative luminance 0.102; OKLCH L 48.7% C 0.173 H 29.0°. Best body text is #FFFFFF at 6.92:1 contrast (WCAG AA passes).

Color values

HEX	#AC251C
RGB	rgb(172, 37, 28)
HSL	hsl(4, 72%, 39%)
HSV	hsv(4, 84%, 67%)
CMYK	cmyk(0%, 78.5%, 83.7%, 32.5%)
CIE-LAB	lab(38.16, 53.06, 39.57)
CIE-LCH	lch(38.16, 66.19, 36.71°)
OKLab	oklab(48.74% 0.1509 0.0837)
OKLCH	oklch(48.74% 0.173 29)
XYZ	xyz(17.8866, 10.1805, 2.1216)
Luminance	0.1018 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AC251C #1CA3AC

analogous

#AC1C5B #AC251C #AC6D1C

triadic

#AC251C #1CAC25 #251CAC

tetradic

#AC251C #5BAC1C #1CA3AC #6D1CAC

square

#AC251C #5BAC1C #1CA3AC #6D1CAC

split-complementary

#AC251C #1CAC6D #1C5BAC

monochromatic

#430E0B #771A13 #AC251C #DC3429 #E5665E

Accessibility & contrast

On white

6.92

#AC251C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.04

#AC251C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AC251C

6.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AC251C	#FFFFFF	#000000	##FFFFFF
##AC251C	1.00	6.92	3.04	6.92
#FFFFFF	6.92	1.00	21.00	1.00
#000000	3.04	21.00	1.00	21.00
##FFFFFF	6.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#504719

Deuteranopia (green-blind)

#716414

Tritanopia (blue-blind)

#BE0025

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #ac251c;
/* rgb */ color: rgb(172, 37, 28);
/* oklch */ color: oklch(48.7% 0.173 29.0);

Tailwind

colors: {
  custom: {
    50: '#ce6c5a',
    500: '#ac251c',
    950: '#000000',
  },
}

SCSS

$custom: #ac251c;
$custom-light: #ce6c5a;
$custom-dark: #000000;

JSON

{
  "hex": "#ac251c",
  "rgb": {
    "r": 172,
    "g": 37,
    "b": 28
  },
  "hsl": {
    "h": 3.75,
    "s": 72,
    "l": 39.216
  },
  "oklch": {
    "l": 0.48737,
    "c": 0.17253,
    "h": 29
  },
  "luminance": 0.10178
}

Semantic roles & 50–950 ramp

primary

#AC251C

secondary

#5BC2C9

accent

#E3EF39

background

#FEF6F5

surface

#FCECE9

border

#D5C7C5

text

#160804

muted

#847A79

Preview Lab

Preview with #AC251C

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

Preview Lab → · Contrast checker → · Palette generator →