#A63D3D#A63D3D

#A63D3D is a mid, vivid red. Relative luminance 0.118; OKLCH L 50.7% C 0.139 H 23.5°. Best body text is #FFFFFF at 6.26:1 contrast (WCAG AA passes).

Color values

HEX	#A63D3D
RGB	rgb(166, 61, 61)
HSL	hsl(0, 46%, 45%)
HSV	hsv(0, 63%, 65%)
CMYK	cmyk(0%, 63.3%, 63.3%, 34.9%)
CIE-LAB	lab(40.87, 43.26, 23.11)
CIE-LCH	lch(40.87, 49.05, 28.11°)
OKLab	oklab(50.69% 0.1276 0.0554)
OKLCH	oklch(50.69% 0.139 23.5)
XYZ	xyz(18.2387, 11.7838, 5.7281)
Luminance	0.1178 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63D3D #3DA6A6

analogous

#A63D72 #A63D3D #A6723D

triadic

#A63D3D #3DA63D #3D3DA6

tetradic

#A63D3D #72A63D #3DA6A6 #723DA6

square

#A63D3D #72A63D #3DA6A6 #723DA6

split-complementary

#A63D3D #3DA672 #3D72A6

monochromatic

#4C1C1C #792D2D #A63D3D #C35D5D #D48A8A

Accessibility & contrast

On white

6.26

#A63D3D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.36

#A63D3D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63D3D

6.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63D3D	#FFFFFF	#000000	##FFFFFF
##A63D3D	1.00	6.26	3.36	6.26
#FFFFFF	6.26	1.00	21.00	1.00
#000000	3.36	21.00	1.00	21.00
##FFFFFF	6.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#58523C

Deuteranopia (green-blind)

#72693A

Tritanopia (blue-blind)

#B6273E

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #a63d3d;
/* rgb */ color: rgb(166, 61, 61);
/* oklch */ color: oklch(50.7% 0.139 23.5);

Tailwind

colors: {
  custom: {
    50: '#c77772',
    500: '#a63d3d',
    950: '#000000',
  },
}

SCSS

$custom: #a63d3d;
$custom-light: #c77772;
$custom-dark: #000000;

JSON

{
  "hex": "#a63d3d",
  "rgb": {
    "r": 166,
    "g": 61,
    "b": 61
  },
  "hsl": {
    "h": 0,
    "s": 46.256,
    "l": 44.51
  },
  "oklch": {
    "l": 0.50691,
    "c": 0.13906,
    "h": 23.5
  },
  "luminance": 0.11781
}

Semantic roles & 50–950 ramp

primary

#A63D3D

secondary

#80BEBE

accent

#D6D652

background

#FDF7F6

surface

#FAEDEC

border

#D3C8C7

text

#140908

muted

#837B7B

Preview Lab

Preview with #A63D3D

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

Preview Lab → · Contrast checker → · Palette generator →