#AC311F#AC311F

#AC311F is a mid, vivid red. Relative luminance 0.111; OKLCH L 49.9% C 0.162 H 31.4°. Best body text is #FFFFFF at 6.54:1 contrast (WCAG AA passes).

Color values

HEX	#AC311F
RGB	rgb(172, 49, 31)
HSL	hsl(8, 69%, 40%)
HSV	hsv(8, 82%, 67%)
CMYK	cmyk(0%, 71.5%, 82%, 32.5%)
CIE-LAB	lab(39.70, 48.97, 39.44)
CIE-LCH	lch(39.70, 62.88, 38.85°)
OKLab	oklab(49.89% 0.1387 0.0845)
OKLCH	oklch(49.89% 0.162 31.4)
XYZ	xyz(18.3611, 11.0690, 2.4658)
Luminance	0.1107 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AC311F #1F9AAC

analogous

#AC1F53 #AC311F #AC781F

triadic

#AC311F #1FAC31 #311FAC

tetradic

#AC311F #53AC1F #1F9AAC #781FAC

square

#AC311F #53AC1F #1F9AAC #781FAC

split-complementary

#AC311F #1FAC78 #1F53AC

monochromatic

#44130C #782216 #AC311F #D9452F #E37363

Accessibility & contrast

On white

6.54

#AC311F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#AC311F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AC311F

6.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AC311F	#FFFFFF	#000000	##FFFFFF
##AC311F	1.00	6.54	3.21	6.54
#FFFFFF	6.54	1.00	21.00	1.00
#000000	3.21	21.00	1.00	21.00
##FFFFFF	6.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#564C1C

Deuteranopia (green-blind)

#746719

Tritanopia (blue-blind)

#BE002E

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #ac311f;
/* rgb */ color: rgb(172, 49, 31);
/* oklch */ color: oklch(49.9% 0.162 31.4);

Tailwind

colors: {
  custom: {
    50: '#ce715c',
    500: '#ac311f',
    950: '#000000',
  },
}

SCSS

$custom: #ac311f;
$custom-light: #ce715c;
$custom-dark: #000000;

JSON

{
  "hex": "#ac311f",
  "rgb": {
    "r": 172,
    "g": 49,
    "b": 31
  },
  "hsl": {
    "h": 7.66,
    "s": 69.458,
    "l": 39.804
  },
  "oklch": {
    "l": 0.49888,
    "c": 0.16241,
    "h": 31.4
  },
  "luminance": 0.11066
}

Semantic roles & 50–950 ramp

primary

#AC311F

secondary

#5FBAC8

accent

#D6EC3C

background

#FDF7F5

surface

#FBEDE9

border

#D4C8C5

text

#150804

muted

#837B79

Preview Lab

Preview with #AC311F

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

Preview Lab → · Contrast checker → · Palette generator →