#A63F2A#A63F2A

#A63F2A is a mid, vivid red. Relative luminance 0.118; OKLCH L 50.7% C 0.141 H 33.3°. Best body text is #FFFFFF at 6.24:1 contrast (WCAG AA passes).

Color values

HEX	#A63F2A
RGB	rgb(166, 63, 42)
HSL	hsl(10, 60%, 41%)
HSV	hsv(10, 75%, 65%)
CMYK	cmyk(0%, 62%, 74.7%, 34.9%)
CIE-LAB	lab(40.95, 41.26, 34.41)
CIE-LCH	lch(40.95, 53.73, 39.83°)
OKLab	oklab(50.66% 0.1175 0.0772)
OKLCH	oklch(50.66% 0.141 33.3)
XYZ	xyz(17.9232, 11.8317, 3.5300)
Luminance	0.1183 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63F2A #2A91A6

analogous

#A62A53 #A63F2A #A67D2A

triadic

#A63F2A #2AA63F #3F2AA6

tetradic

#A63F2A #53A62A #2A91A6 #7D2AA6

square

#A63F2A #53A62A #2A91A6 #7D2AA6

split-complementary

#A63F2A #2AA67D #2A53A6

monochromatic

#441A11 #752C1E #A63F2A #CE573F #DB8270

Accessibility & contrast

On white

6.24

#A63F2A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.37

#A63F2A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63F2A

6.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63F2A	#FFFFFF	#000000	##FFFFFF
##A63F2A	1.00	6.24	3.37	6.24
#FFFFFF	6.24	1.00	21.00	1.00
#000000	3.37	21.00	1.00	21.00
##FFFFFF	6.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B5227

Deuteranopia (green-blind)

#756927

Tritanopia (blue-blind)

#B7263B

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #a63f2a;
/* rgb */ color: rgb(166, 63, 42);
/* oklch */ color: oklch(50.7% 0.141 33.3);

Tailwind

colors: {
  custom: {
    50: '#c87864',
    500: '#a63f2a',
    950: '#000000',
  },
}

SCSS

$custom: #a63f2a;
$custom-light: #c87864;
$custom-dark: #000000;

JSON

{
  "hex": "#a63f2a",
  "rgb": {
    "r": 166,
    "g": 63,
    "b": 42
  },
  "hsl": {
    "h": 10.161,
    "s": 59.615,
    "l": 40.784
  },
  "oklch": {
    "l": 0.50661,
    "c": 0.14061,
    "h": 33.3
  },
  "luminance": 0.11829
}

Semantic roles & 50–950 ramp

primary

#A63F2A

secondary

#6AB3C2

accent

#C8E345

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140905

muted

#837B7A

Preview Lab

Preview with #A63F2A

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

Preview Lab → · Contrast checker → · Palette generator →