#A6371C#A6371C

#A6371C is a mid, vivid red. Relative luminance 0.109; OKLCH L 49.5% C 0.151 H 34.7°. Best body text is #FFFFFF at 6.59:1 contrast (WCAG AA passes).

Color values

HEX	#A6371C
RGB	rgb(166, 55, 28)
HSL	hsl(12, 71%, 38%)
HSV	hsv(12, 83%, 65%)
CMYK	cmyk(0%, 66.9%, 83.1%, 34.9%)
CIE-LAB	lab(39.46, 44.35, 40.36)
CIE-LCH	lch(39.46, 59.96, 42.30°)
OKLab	oklab(49.49% 0.1244 0.0861)
OKLCH	oklch(49.49% 0.151 34.7)
XYZ	xyz(17.3037, 10.9258, 2.2961)
Luminance	0.1092 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A6371C #1C8BA6

analogous

#A61C46 #A6371C #A67C1C

triadic

#A6371C #1CA637 #371CA6

tetradic

#A6371C #46A61C #1C8BA6 #7C1CA6

square

#A6371C #46A61C #1C8BA6 #7C1CA6

split-complementary

#A6371C #1CA67C #1C46A6

monochromatic

#3D140A #722613 #A6371C #DA4825 #E37459

Accessibility & contrast

On white

6.59

#A6371C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.18

#A6371C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A6371C

6.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A6371C	#FFFFFF	#000000	##FFFFFF
##A6371C	1.00	6.59	3.18	6.59
#FFFFFF	6.59	1.00	21.00	1.00
#000000	3.18	21.00	1.00	21.00
##FFFFFF	6.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#574D18

Deuteranopia (green-blind)

#736617

Tritanopia (blue-blind)

#B71532

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #a6371c;
/* rgb */ color: rgb(166, 55, 28);
/* oklch */ color: oklch(49.5% 0.151 34.7);

Tailwind

colors: {
  custom: {
    50: '#c9745b',
    500: '#a6371c',
    950: '#000000',
  },
}

SCSS

$custom: #a6371c;
$custom-light: #c9745b;
$custom-dark: #000000;

JSON

{
  "hex": "#a6371c",
  "rgb": {
    "r": 166,
    "g": 55,
    "b": 28
  },
  "hsl": {
    "h": 11.739,
    "s": 71.134,
    "l": 38.039
  },
  "oklch": {
    "l": 0.49493,
    "c": 0.15128,
    "h": 34.7
  },
  "luminance": 0.10923
}

Semantic roles & 50–950 ramp

primary

#A6371C

secondary

#57B1C7

accent

#CBEE3A

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150804

muted

#837B79

Preview Lab

Preview with #A6371C

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

Preview Lab → · Contrast checker → · Palette generator →