#A1371B#A1371B

#A1371B is a mid, vivid red. Relative luminance 0.104; OKLCH L 48.6% C 0.146 H 35.4°. Best body text is #FFFFFF at 6.82:1 contrast (WCAG AA passes).

Color values

HEX	#A1371B
RGB	rgb(161, 55, 27)
HSL	hsl(13, 71%, 37%)
HSV	hsv(13, 83%, 63%)
CMYK	cmyk(0%, 65.8%, 83.2%, 36.9%)
CIE-LAB	lab(38.54, 42.52, 39.67)
CIE-LCH	lch(38.54, 58.15, 43.01°)
OKLab	oklab(48.63% 0.1191 0.0847)
OKLCH	oklch(48.63% 0.146 35.4)
XYZ	xyz(16.2638, 10.3910, 2.1860)
Luminance	0.1039 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A1371B #1B85A1

analogous

#A11B42 #A1371B #A17A1B

triadic

#A1371B #1BA137 #371BA1

tetradic

#A1371B #42A11B #1B85A1 #7A1BA1

square

#A1371B #42A11B #1B85A1 #7A1BA1

split-complementary

#A1371B #1BA17A #1B42A1

monochromatic

#381309 #6D2512 #A1371B #D54924 #E27254

Accessibility & contrast

On white

6.82

#A1371B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.08

#A1371B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A1371B

6.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A1371B	#FFFFFF	#000000	##FFFFFF
##A1371B	1.00	6.82	3.08	6.82
#FFFFFF	6.82	1.00	21.00	1.00
#000000	3.08	21.00	1.00	21.00
##FFFFFF	6.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#564C17

Deuteranopia (green-blind)

#706316

Tritanopia (blue-blind)

#B21832

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #a1371b;
/* rgb */ color: rgb(161, 55, 27);
/* oklch */ color: oklch(48.6% 0.146 35.4);

Tailwind

colors: {
  custom: {
    50: '#c5735a',
    500: '#a1371b',
    950: '#000000',
  },
}

SCSS

$custom: #a1371b;
$custom-light: #c5735a;
$custom-dark: #000000;

JSON

{
  "hex": "#a1371b",
  "rgb": {
    "r": 161,
    "g": 55,
    "b": 27
  },
  "hsl": {
    "h": 12.537,
    "s": 71.277,
    "l": 36.863
  },
  "oklch": {
    "l": 0.48628,
    "c": 0.14611,
    "h": 35.4
  },
  "luminance": 0.10389
}

Semantic roles & 50–950 ramp

primary

#A1371B

secondary

#52ADC5

accent

#C8EE3A

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#140804

muted

#837B79

Preview Lab

Preview with #A1371B

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

Preview Lab → · Contrast checker → · Palette generator →