#A7311D#A7311D

#A7311D is a mid, vivid red. Relative luminance 0.105; OKLCH L 49.0% C 0.158 H 32.1°. Best body text is #FFFFFF at 6.77:1 contrast (WCAG AA passes).

Color values

HEX	#A7311D
RGB	rgb(167, 49, 29)
HSL	hsl(9, 70%, 38%)
HSV	hsv(9, 83%, 65%)
CMYK	cmyk(0%, 70.7%, 82.6%, 34.5%)
CIE-LAB	lab(38.73, 47.22, 39.23)
CIE-LCH	lch(38.73, 61.39, 39.72°)
OKLab	oklab(48.99% 0.1334 0.0838)
OKLCH	oklch(48.99% 0.158 32.1)
XYZ	xyz(17.2585, 10.5035, 2.2808)
Luminance	0.1050 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A7311D #1D93A7

analogous

#A71D4E #A7311D #A7761D

triadic

#A7311D #1DA731 #311DA7

tetradic

#A7311D #4EA71D #1D93A7 #761DA7

square

#A7311D #4EA71D #1D93A7 #761DA7

split-complementary

#A7311D #1DA776 #1D4EA7

monochromatic

#3F120B #732214 #A7311D #DA4128 #E36F5C

Accessibility & contrast

On white

6.77

#A7311D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#A7311D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A7311D

6.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A7311D	#FFFFFF	#000000	##FFFFFF
##A7311D	1.00	6.77	3.10	6.77
#FFFFFF	6.77	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#544B19

Deuteranopia (green-blind)

#716517

Tritanopia (blue-blind)

#B8002E

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #a7311d;
/* rgb */ color: rgb(167, 49, 29);
/* oklch */ color: oklch(49.0% 0.158 32.1);

Tailwind

colors: {
  custom: {
    50: '#ca715b',
    500: '#a7311d',
    950: '#000000',
  },
}

SCSS

$custom: #a7311d;
$custom-light: #ca715b;
$custom-dark: #000000;

JSON

{
  "hex": "#a7311d",
  "rgb": {
    "r": 167,
    "g": 49,
    "b": 29
  },
  "hsl": {
    "h": 8.696,
    "s": 70.408,
    "l": 38.431
  },
  "oklch": {
    "l": 0.48987,
    "c": 0.15755,
    "h": 32.1
  },
  "luminance": 0.10501
}

Semantic roles & 50–950 ramp

primary

#A7311D

secondary

#59B7C7

accent

#D3ED3B

background

#FDF7F5

surface

#FBEDE9

border

#D4C8C5

text

#150804

muted

#837B79

Preview Lab

Preview with #A7311D

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

Preview Lab → · Contrast checker → · Palette generator →