#A63C2C#A63C2C

#A63C2C is a mid, vivid red. Relative luminance 0.115; OKLCH L 50.3% C 0.143 H 31.1°. Best body text is #FFFFFF at 6.36:1 contrast (WCAG AA passes).

Color values

HEX	#A63C2C
RGB	rgb(166, 60, 44)
HSL	hsl(8, 58%, 41%)
HSV	hsv(8, 73%, 65%)
CMYK	cmyk(0%, 63.9%, 73.5%, 34.9%)
CIE-LAB	lab(40.45, 42.75, 32.72)
CIE-LCH	lch(40.45, 53.83, 37.43°)
OKLab	oklab(50.29% 0.1225 0.074)
OKLCH	oklch(50.29% 0.143 31.1)
XYZ	xyz(17.7983, 11.5231, 3.6694)
Luminance	0.1152 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63C2C #2C96A6

analogous

#A62C59 #A63C2C #A6792C

triadic

#A63C2C #2CA63C #3C2CA6

tetradic

#A63C2C #59A62C #2C96A6 #792CA6

square

#A63C2C #59A62C #2C96A6 #792CA6

split-complementary

#A63C2C #2CA679 #2C59A6

monochromatic

#451912 #762B1F #A63C2C #CD5442 #DA8073

Accessibility & contrast

On white

6.36

#A63C2C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#A63C2C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63C2C

6.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63C2C	#FFFFFF	#000000	##FFFFFF
##A63C2C	1.00	6.36	3.30	6.36
#FFFFFF	6.36	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#59512A

Deuteranopia (green-blind)

#746829

Tritanopia (blue-blind)

#B72239

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a63c2c;
/* rgb */ color: rgb(166, 60, 44);
/* oklch */ color: oklch(50.3% 0.143 31.1);

Tailwind

colors: {
  custom: {
    50: '#c87766',
    500: '#a63c2c',
    950: '#000000',
  },
}

SCSS

$custom: #a63c2c;
$custom-light: #c87766;
$custom-dark: #000000;

JSON

{
  "hex": "#a63c2c",
  "rgb": {
    "r": 166,
    "g": 60,
    "b": 44
  },
  "hsl": {
    "h": 7.869,
    "s": 58.095,
    "l": 41.176
  },
  "oklch": {
    "l": 0.50292,
    "c": 0.14314,
    "h": 31.1
  },
  "luminance": 0.11521
}

Semantic roles & 50–950 ramp

primary

#A63C2C

secondary

#6DB6C1

accent

#CDE146

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140906

muted

#837B7A

Preview Lab

Preview with #A63C2C

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

Preview Lab → · Contrast checker → · Palette generator →