#A6231D#A6231D

#A6231D is a mid, vivid red. Relative luminance 0.094; OKLCH L 47.5% C 0.168 H 28.3°. Best body text is #FFFFFF at 7.29:1 contrast (WCAG AA passes).

Color values

HEX	#A6231D
RGB	rgb(166, 35, 29)
HSL	hsl(3, 70%, 38%)
HSV	hsv(3, 83%, 65%)
CMYK	cmyk(0%, 78.9%, 82.5%, 34.9%)
CIE-LAB	lab(36.74, 51.86, 37.26)
CIE-LCH	lch(36.74, 63.86, 35.69°)
OKLab	oklab(47.47% 0.148 0.0796)
OKLCH	oklch(47.47% 0.168 28.3)
XYZ	xyz(16.5507, 9.4004, 2.1052)
Luminance	0.0940 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A6231D #1DA0A6

analogous

#A61D5B #A6231D #A6671D

triadic

#A6231D #1DA623 #231DA6

tetradic

#A6231D #5BA61D #1DA0A6 #671DA6

square

#A6231D #5BA61D #1DA0A6 #671DA6

split-complementary

#A6231D #1DA667 #1D5BA6

monochromatic

#3E0D0B #721814 #A6231D #D92F27 #E2615B

Accessibility & contrast

On white

7.29

#A6231D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.88

#A6231D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A6231D

7.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A6231D	#FFFFFF	#000000	##FFFFFF
##A6231D	1.00	7.29	2.88	7.29
#FFFFFF	7.29	1.00	21.00	1.00
#000000	2.88	21.00	1.00	21.00
##FFFFFF	7.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D441A

Deuteranopia (green-blind)

#6D6116

Tritanopia (blue-blind)

#B70023

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #a6231d;
/* rgb */ color: rgb(166, 35, 29);
/* oklch */ color: oklch(47.5% 0.168 28.3);

Tailwind

colors: {
  custom: {
    50: '#ca6a5a',
    500: '#a6231d',
    950: '#000000',
  },
}

SCSS

$custom: #a6231d;
$custom-light: #ca6a5a;
$custom-dark: #000000;

JSON

{
  "hex": "#a6231d",
  "rgb": {
    "r": 166,
    "g": 35,
    "b": 29
  },
  "hsl": {
    "h": 2.628,
    "s": 70.256,
    "l": 38.235
  },
  "oklch": {
    "l": 0.47468,
    "c": 0.16802,
    "h": 28.3
  },
  "luminance": 0.09398
}

Semantic roles & 50–950 ramp

primary

#A6231D

secondary

#59C1C6

accent

#E5ED3B

background

#FDF6F5

surface

#FBECE9

border

#D4C7C5

text

#150704

muted

#837A79

Preview Lab

Preview with #A6231D

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

Preview Lab → · Contrast checker → · Palette generator →