#A6311D#A6311D

#A6311D is a mid, vivid red. Relative luminance 0.104; OKLCH L 48.8% C 0.157 H 32.2°. Best body text is #FFFFFF at 6.82:1 contrast (WCAG AA passes).

Color values

HEX	#A6311D
RGB	rgb(166, 49, 29)
HSL	hsl(9, 70%, 38%)
HSV	hsv(9, 83%, 65%)
CMYK	cmyk(0%, 70.5%, 82.5%, 34.9%)
CIE-LAB	lab(38.54, 46.88, 38.99)
CIE-LCH	lch(38.54, 60.97, 39.75°)
OKLab	oklab(48.81% 0.1324 0.0834)
OKLCH	oklch(48.81% 0.157 32.2)
XYZ	xyz(17.0480, 10.3949, 2.2709)
Luminance	0.1039 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A6311D #1D92A6

analogous

#A61D4D #A6311D #A6751D

triadic

#A6311D #1DA631 #311DA6

tetradic

#A6311D #4DA61D #1D92A6 #751DA6

square

#A6311D #4DA61D #1D92A6 #751DA6

split-complementary

#A6311D #1DA675 #1D4DA6

monochromatic

#3E120B #722214 #A6311D #D94127 #E26F5B

Accessibility & contrast

On white

6.82

#A6311D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.08

#A6311D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A6311D

6.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A6311D	#FFFFFF	#000000	##FFFFFF
##A6311D	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)

#544A19

Deuteranopia (green-blind)

#716417

Tritanopia (blue-blind)

#B7022D

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #a6311d;
/* rgb */ color: rgb(166, 49, 29);
/* oklch */ color: oklch(48.8% 0.157 32.2);

Tailwind

colors: {
  custom: {
    50: '#c9715b',
    500: '#a6311d',
    950: '#000000',
  },
}

SCSS

$custom: #a6311d;
$custom-light: #c9715b;
$custom-dark: #000000;

JSON

{
  "hex": "#a6311d",
  "rgb": {
    "r": 166,
    "g": 49,
    "b": 29
  },
  "hsl": {
    "h": 8.759,
    "s": 70.256,
    "l": 38.235
  },
  "oklch": {
    "l": 0.48811,
    "c": 0.15651,
    "h": 32.2
  },
  "luminance": 0.10392
}

Semantic roles & 50–950 ramp

primary

#A6311D

secondary

#59B6C6

accent

#D3ED3B

background

#FDF7F5

surface

#FBEDE9

border

#D4C8C5

text

#150804

muted

#837B79

Preview Lab

Preview with #A6311D

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

Preview Lab → · Contrast checker → · Palette generator →