#A63A2C#A63A2C

#A63A2C is a mid, vivid red. Relative luminance 0.113; OKLCH L 50.0% C 0.145 H 30.3°. Best body text is #FFFFFF at 6.44:1 contrast (WCAG AA passes).

Color values

HEX	#A63A2C
RGB	rgb(166, 58, 44)
HSL	hsl(7, 58%, 41%)
HSV	hsv(7, 73%, 65%)
CMYK	cmyk(0%, 65.1%, 73.5%, 34.9%)
CIE-LAB	lab(40.11, 43.65, 32.34)
CIE-LCH	lch(40.11, 54.33, 36.54°)
OKLab	oklab(50.04% 0.1253 0.0732)
OKLCH	oklch(50.04% 0.145 30.3)
XYZ	xyz(17.6955, 11.3175, 3.6351)
Luminance	0.1132 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63A2C #2C98A6

analogous

#A62C5B #A63A2C #A6772C

triadic

#A63A2C #2CA63A #3A2CA6

tetradic

#A63A2C #5BA62C #2C98A6 #772CA6

square

#A63A2C #5BA62C #2C98A6 #772CA6

split-complementary

#A63A2C #2CA677 #2C5BA6

monochromatic

#451812 #76291F #A63A2C #CD5242 #DA7E73

Accessibility & contrast

On white

6.44

#A63A2C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.26

#A63A2C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63A2C

6.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63A2C	#FFFFFF	#000000	##FFFFFF
##A63A2C	1.00	6.44	3.26	6.44
#FFFFFF	6.44	1.00	21.00	1.00
#000000	3.26	21.00	1.00	21.00
##FFFFFF	6.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#58502A

Deuteranopia (green-blind)

#736729

Tritanopia (blue-blind)

#B71E37

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #a63a2c;
/* rgb */ color: rgb(166, 58, 44);
/* oklch */ color: oklch(50.0% 0.145 30.3);

Tailwind

colors: {
  custom: {
    50: '#c87666',
    500: '#a63a2c',
    950: '#000000',
  },
}

SCSS

$custom: #a63a2c;
$custom-light: #c87666;
$custom-dark: #000000;

JSON

{
  "hex": "#a63a2c",
  "rgb": {
    "r": 166,
    "g": 58,
    "b": 44
  },
  "hsl": {
    "h": 6.885,
    "s": 58.095,
    "l": 41.176
  },
  "oklch": {
    "l": 0.50038,
    "c": 0.14514,
    "h": 30.3
  },
  "luminance": 0.11315
}

Semantic roles & 50–950 ramp

primary

#A63A2C

secondary

#6DB8C1

accent

#D0E146

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140906

muted

#837B7A

Preview Lab

Preview with #A63A2C

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

Preview Lab → · Contrast checker → · Palette generator →