#A63B2C#A63B2C

#A63B2C is a mid, vivid red. Relative luminance 0.114; OKLCH L 50.2% C 0.144 H 30.7°. Best body text is #FFFFFF at 6.40:1 contrast (WCAG AA passes).

Color values

HEX	#A63B2C
RGB	rgb(166, 59, 44)
HSL	hsl(7, 58%, 41%)
HSV	hsv(7, 73%, 65%)
CMYK	cmyk(0%, 64.5%, 73.5%, 34.9%)
CIE-LAB	lab(40.28, 43.20, 32.53)
CIE-LCH	lch(40.28, 54.08, 36.98°)
OKLab	oklab(50.16% 0.1239 0.0736)
OKLCH	oklch(50.16% 0.144 30.7)
XYZ	xyz(17.7464, 11.4193, 3.6521)
Luminance	0.1142 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63B2C #2C97A6

analogous

#A62C5A #A63B2C #A6782C

triadic

#A63B2C #2CA63B #3B2CA6

tetradic

#A63B2C #5AA62C #2C97A6 #782CA6

square

#A63B2C #5AA62C #2C97A6 #782CA6

split-complementary

#A63B2C #2CA678 #2C5AA6

monochromatic

#451912 #762A1F #A63B2C #CD5342 #DA7F73

Accessibility & contrast

On white

6.40

#A63B2C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#A63B2C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63B2C

6.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63B2C	#FFFFFF	#000000	##FFFFFF
##A63B2C	1.00	6.40	3.28	6.40
#FFFFFF	6.40	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#59502A

Deuteranopia (green-blind)

#736829

Tritanopia (blue-blind)

#B72038

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a63b2c;
/* rgb */ color: rgb(166, 59, 44);
/* oklch */ color: oklch(50.2% 0.144 30.7);

Tailwind

colors: {
  custom: {
    50: '#c87666',
    500: '#a63b2c',
    950: '#000000',
  },
}

SCSS

$custom: #a63b2c;
$custom-light: #c87666;
$custom-dark: #000000;

JSON

{
  "hex": "#a63b2c",
  "rgb": {
    "r": 166,
    "g": 59,
    "b": 44
  },
  "hsl": {
    "h": 7.377,
    "s": 58.095,
    "l": 41.176
  },
  "oklch": {
    "l": 0.50164,
    "c": 0.14415,
    "h": 30.7
  },
  "luminance": 0.11417
}

Semantic roles & 50–950 ramp

primary

#A63B2C

secondary

#6DB7C1

accent

#CEE146

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140906

muted

#837B7A

Preview Lab

Preview with #A63B2C

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

Preview Lab → · Contrast checker → · Palette generator →