#AC311D#AC311D

#AC311D is a mid, vivid red. Relative luminance 0.111; OKLCH L 49.9% C 0.163 H 31.9°. Best body text is #FFFFFF at 6.54:1 contrast (WCAG AA passes).

Color values

HEX	#AC311D
RGB	rgb(172, 49, 29)
HSL	hsl(8, 71%, 39%)
HSV	hsv(8, 83%, 67%)
CMYK	cmyk(0%, 71.5%, 83.1%, 32.5%)
CIE-LAB	lab(39.68, 48.91, 40.46)
CIE-LCH	lch(39.68, 63.48, 39.60°)
OKLab	oklab(49.87% 0.1381 0.0861)
OKLCH	oklch(49.87% 0.163 31.9)
XYZ	xyz(18.3355, 11.0588, 2.3313)
Luminance	0.1106 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AC311D #1D98AC

analogous

#AC1D50 #AC311D #AC791D

triadic

#AC311D #1DAC31 #311DAC

tetradic

#AC311D #50AC1D #1D98AC #791DAC

square

#AC311D #50AC1D #1D98AC #791DAC

split-complementary

#AC311D #1DAC79 #1D50AC

monochromatic

#43130B #782214 #AC311D #DB442B #E4725F

Accessibility & contrast

On white

6.54

#AC311D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#AC311D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AC311D

6.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AC311D	#FFFFFF	#000000	##FFFFFF
##AC311D	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)

#564C19

Deuteranopia (green-blind)

#746717

Tritanopia (blue-blind)

#BE002E

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #ac311d;
/* rgb */ color: rgb(172, 49, 29);
/* oklch */ color: oklch(49.9% 0.163 31.9);

Tailwind

colors: {
  custom: {
    50: '#ce715b',
    500: '#ac311d',
    950: '#000000',
  },
}

SCSS

$custom: #ac311d;
$custom-light: #ce715b;
$custom-dark: #000000;

JSON

{
  "hex": "#ac311d",
  "rgb": {
    "r": 172,
    "g": 49,
    "b": 29
  },
  "hsl": {
    "h": 8.392,
    "s": 71.144,
    "l": 39.412
  },
  "oklch": {
    "l": 0.4987,
    "c": 0.16273,
    "h": 31.9
  },
  "luminance": 0.11056
}

Semantic roles & 50–950 ramp

primary

#AC311D

secondary

#5CB9C8

accent

#D5EE3A

background

#FDF7F5

surface

#FBEDE9

border

#D4C8C5

text

#150804

muted

#837B79

Preview Lab

Preview with #AC311D

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

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