#A63F3D#A63F3D

#A63F3D is a mid, vivid red. Relative luminance 0.120; OKLCH L 51.0% C 0.137 H 24.3°. Best body text is #FFFFFF at 6.18:1 contrast (WCAG AA passes).

Color values

HEX	#A63F3D
RGB	rgb(166, 63, 61)
HSL	hsl(1, 46%, 45%)
HSV	hsv(1, 63%, 65%)
CMYK	cmyk(0%, 62%, 63.3%, 34.9%)
CIE-LAB	lab(41.22, 42.34, 23.55)
CIE-LCH	lch(41.22, 48.45, 29.09°)
OKLab	oklab(50.95% 0.1246 0.0564)
OKLCH	oklch(50.95% 0.137 24.3)
XYZ	xyz(18.3474, 12.0014, 5.7643)
Luminance	0.1200 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63F3D #3DA4A6

analogous

#A63D70 #A63F3D #A6743D

triadic

#A63F3D #3DA63F #3F3DA6

tetradic

#A63F3D #70A63D #3DA4A6 #743DA6

square

#A63F3D #70A63D #3DA4A6 #743DA6

split-complementary

#A63F3D #3DA674 #3D70A6

monochromatic

#4C1D1C #792E2D #A63F3D #C35F5D #D48B8A

Accessibility & contrast

On white

6.18

#A63F3D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.40

#A63F3D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63F3D

6.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63F3D	#FFFFFF	#000000	##FFFFFF
##A63F3D	1.00	6.18	3.40	6.18
#FFFFFF	6.18	1.00	21.00	1.00
#000000	3.40	21.00	1.00	21.00
##FFFFFF	6.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#59533C

Deuteranopia (green-blind)

#73693A

Tritanopia (blue-blind)

#B62A3F

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #a63f3d;
/* rgb */ color: rgb(166, 63, 61);
/* oklch */ color: oklch(51.0% 0.137 24.3);

Tailwind

colors: {
  custom: {
    50: '#c67972',
    500: '#a63f3d',
    950: '#000000',
  },
}

SCSS

$custom: #a63f3d;
$custom-light: #c67972;
$custom-dark: #000000;

JSON

{
  "hex": "#a63f3d",
  "rgb": {
    "r": 166,
    "g": 63,
    "b": 61
  },
  "hsl": {
    "h": 1.143,
    "s": 46.256,
    "l": 44.51
  },
  "oklch": {
    "l": 0.50952,
    "c": 0.13679,
    "h": 24.3
  },
  "luminance": 0.11999
}

Semantic roles & 50–950 ramp

primary

#A63F3D

secondary

#80BDBE

accent

#D3D652

background

#FDF7F6

surface

#FAEEEC

border

#D3C9C7

text

#140908

muted

#837B7B

Preview Lab

Preview with #A63F3D

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

Preview Lab → · Contrast checker → · Palette generator →