#A6311C#A6311C

#A6311C is a mid, vivid red. Relative luminance 0.104; OKLCH L 48.8% C 0.157 H 32.5°. Best body text is #FFFFFF at 6.82:1 contrast (WCAG AA passes).

Color values

HEX	#A6311C
RGB	rgb(166, 49, 28)
HSL	hsl(9, 71%, 38%)
HSV	hsv(9, 83%, 65%)
CMYK	cmyk(0%, 70.5%, 83.1%, 34.9%)
CIE-LAB	lab(38.53, 46.85, 39.49)
CIE-LCH	lch(38.53, 61.28, 40.13°)
OKLab	oklab(48.8% 0.1322 0.0842)
OKLCH	oklch(48.8% 0.157 32.5)
XYZ	xyz(17.0358, 10.3901, 2.2068)
Luminance	0.1039 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A6311C #1C91A6

analogous

#A61C4C #A6311C #A6761C

triadic

#A6311C #1CA631 #311CA6

tetradic

#A6311C #4CA61C #1C91A6 #761CA6

square

#A6311C #4CA61C #1C91A6 #761CA6

split-complementary

#A6311C #1CA676 #1C4CA6

monochromatic

#3D120A #722213 #A6311C #DA4125 #E36E59

Accessibility & contrast

On white

6.82

#A6311C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.08

#A6311C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A6311C

6.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A6311C	#FFFFFF	#000000	##FFFFFF
##A6311C	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)

#544A18

Deuteranopia (green-blind)

#716416

Tritanopia (blue-blind)

#B7012D

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #a6311c;
/* rgb */ color: rgb(166, 49, 28);
/* oklch */ color: oklch(48.8% 0.157 32.5);

Tailwind

colors: {
  custom: {
    50: '#c9705a',
    500: '#a6311c',
    950: '#000000',
  },
}

SCSS

$custom: #a6311c;
$custom-light: #c9705a;
$custom-dark: #000000;

JSON

{
  "hex": "#a6311c",
  "rgb": {
    "r": 166,
    "g": 49,
    "b": 28
  },
  "hsl": {
    "h": 9.13,
    "s": 71.134,
    "l": 38.039
  },
  "oklch": {
    "l": 0.48802,
    "c": 0.15668,
    "h": 32.5
  },
  "luminance": 0.10387
}

Semantic roles & 50–950 ramp

primary

#A6311C

secondary

#57B6C7

accent

#D3EE3A

background

#FDF7F5

surface

#FBEDE9

border

#D4C8C5

text

#150804

muted

#837B79

Preview Lab

Preview with #A6311C

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

Preview Lab → · Contrast checker → · Palette generator →