#A7311C#A7311C

#A7311C is a mid, vivid red. Relative luminance 0.105; OKLCH L 49.0% C 0.158 H 32.4°. Best body text is #FFFFFF at 6.78:1 contrast (WCAG AA passes).

Color values

HEX	#A7311C
RGB	rgb(167, 49, 28)
HSL	hsl(9, 71%, 38%)
HSV	hsv(9, 83%, 65%)
CMYK	cmyk(0%, 70.7%, 83.2%, 34.5%)
CIE-LAB	lab(38.72, 47.19, 39.74)
CIE-LCH	lch(38.72, 61.70, 40.10°)
OKLab	oklab(48.98% 0.1331 0.0846)
OKLCH	oklch(48.98% 0.158 32.4)
XYZ	xyz(17.2463, 10.4986, 2.2167)
Luminance	0.1050 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A7311C #1C92A7

analogous

#A71C4C #A7311C #A7761C

triadic

#A7311C #1CA731 #311CA7

tetradic

#A7311C #4CA71C #1C92A7 #761CA7

square

#A7311C #4CA71C #1C92A7 #761CA7

split-complementary

#A7311C #1CA776 #1C4CA7

monochromatic

#3E120A #732213 #A7311C #DB4126 #E36F5A

Accessibility & contrast

On white

6.78

#A7311C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#A7311C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A7311C

6.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A7311C	#FFFFFF	#000000	##FFFFFF
##A7311C	1.00	6.78	3.10	6.78
#FFFFFF	6.78	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#544B18

Deuteranopia (green-blind)

#716516

Tritanopia (blue-blind)

#B8002D

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #a7311c;
/* rgb */ color: rgb(167, 49, 28);
/* oklch */ color: oklch(49.0% 0.158 32.4);

Tailwind

colors: {
  custom: {
    50: '#ca715a',
    500: '#a7311c',
    950: '#000000',
  },
}

SCSS

$custom: #a7311c;
$custom-light: #ca715a;
$custom-dark: #000000;

JSON

{
  "hex": "#a7311c",
  "rgb": {
    "r": 167,
    "g": 49,
    "b": 28
  },
  "hsl": {
    "h": 9.065,
    "s": 71.282,
    "l": 38.235
  },
  "oklch": {
    "l": 0.48978,
    "c": 0.15772,
    "h": 32.4
  },
  "luminance": 0.10496
}

Semantic roles & 50–950 ramp

primary

#A7311C

secondary

#58B6C7

accent

#D3EE3A

background

#FDF7F5

surface

#FBEDE9

border

#D4C8C5

text

#150804

muted

#837B79

Preview Lab

Preview with #A7311C

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

Preview Lab → · Contrast checker → · Palette generator →