#A6371F#A6371F

#A6371F is a mid, vivid red. Relative luminance 0.109; OKLCH L 49.5% C 0.151 H 33.8°. Best body text is #FFFFFF at 6.59:1 contrast (WCAG AA passes).

Color values

HEX	#A6371F
RGB	rgb(166, 55, 31)
HSL	hsl(11, 69%, 39%)
HSV	hsv(11, 81%, 65%)
CMYK	cmyk(0%, 66.9%, 81.3%, 34.9%)
CIE-LAB	lab(39.48, 44.45, 38.85)
CIE-LCH	lch(39.48, 59.03, 41.16°)
OKLab	oklab(49.52% 0.1253 0.0838)
OKLCH	oklch(49.52% 0.151 33.8)
XYZ	xyz(17.3414, 10.9409, 2.4947)
Luminance	0.1094 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A6371F #1F8EA6

analogous

#A61F4A #A6371F #A67A1F

triadic

#A6371F #1FA637 #371FA6

tetradic

#A6371F #4AA61F #1F8EA6 #7A1FA6

square

#A6371F #4AA61F #1F8EA6 #7A1FA6

split-complementary

#A6371F #1FA67A #1F4AA6

monochromatic

#3F150C #722615 #A6371F #D7492B #E1765E

Accessibility & contrast

On white

6.59

#A6371F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#A6371F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A6371F

6.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A6371F	#FFFFFF	#000000	##FFFFFF
##A6371F	1.00	6.59	3.19	6.59
#FFFFFF	6.59	1.00	21.00	1.00
#000000	3.19	21.00	1.00	21.00
##FFFFFF	6.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#574D1B

Deuteranopia (green-blind)

#72661A

Tritanopia (blue-blind)

#B71532

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #a6371f;
/* rgb */ color: rgb(166, 55, 31);
/* oklch */ color: oklch(49.5% 0.151 33.8);

Tailwind

colors: {
  custom: {
    50: '#c9745d',
    500: '#a6371f',
    950: '#000000',
  },
}

SCSS

$custom: #a6371f;
$custom-light: #c9745d;
$custom-dark: #000000;

JSON

{
  "hex": "#a6371f",
  "rgb": {
    "r": 166,
    "g": 55,
    "b": 31
  },
  "hsl": {
    "h": 10.667,
    "s": 68.528,
    "l": 38.627
  },
  "oklch": {
    "l": 0.49521,
    "c": 0.15069,
    "h": 33.8
  },
  "luminance": 0.10938
}

Semantic roles & 50–950 ramp

primary

#A6371F

secondary

#5BB3C5

accent

#CCEB3C

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150804

muted

#837B79

Preview Lab

Preview with #A6371F

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

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