#A63D3F#A63D3F

#A63D3F is a mid, vivid red. Relative luminance 0.118; OKLCH L 50.7% C 0.139 H 22.4°. Best body text is #FFFFFF at 6.25:1 contrast (WCAG AA passes).

Color values

HEX	#A63D3F
RGB	rgb(166, 61, 63)
HSL	hsl(359, 46%, 45%)
HSV	hsv(359, 63%, 65%)
CMYK	cmyk(0%, 63.3%, 62%, 34.9%)
CIE-LAB	lab(40.91, 43.40, 21.93)
CIE-LCH	lch(40.91, 48.63, 26.81°)
OKLab	oklab(50.73% 0.1284 0.0529)
OKLCH	oklch(50.73% 0.139 22.4)
XYZ	xyz(18.2936, 11.8058, 6.0171)
Luminance	0.1180 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63D3F #3DA6A4

analogous

#A63D74 #A63D3F #A6703D

triadic

#A63D3F #3FA63D #3D3FA6

tetradic

#A63D3F #74A63D #3DA6A4 #703DA6

square

#A63D3F #74A63D #3DA6A4 #703DA6

split-complementary

#A63D3F #3DA670 #3D74A6

monochromatic

#4C1C1D #792D2E #A63D3F #C35D5F #D48A8B

Accessibility & contrast

On white

6.25

#A63D3F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.36

#A63D3F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63D3F

6.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63D3F	#FFFFFF	#000000	##FFFFFF
##A63D3F	1.00	6.25	3.36	6.25
#FFFFFF	6.25	1.00	21.00	1.00
#000000	3.36	21.00	1.00	21.00
##FFFFFF	6.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#58523E

Deuteranopia (green-blind)

#72693C

Tritanopia (blue-blind)

#B6283F

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #a63d3f;
/* rgb */ color: rgb(166, 61, 63);
/* oklch */ color: oklch(50.7% 0.139 22.4);

Tailwind

colors: {
  custom: {
    50: '#c67874',
    500: '#a63d3f',
    950: '#000000',
  },
}

SCSS

$custom: #a63d3f;
$custom-light: #c67874;
$custom-dark: #000000;

JSON

{
  "hex": "#a63d3f",
  "rgb": {
    "r": 166,
    "g": 61,
    "b": 63
  },
  "hsl": {
    "h": 358.857,
    "s": 46.256,
    "l": 44.51
  },
  "oklch": {
    "l": 0.50729,
    "c": 0.13883,
    "h": 22.4
  },
  "luminance": 0.11803
}

Semantic roles & 50–950 ramp

primary

#A63D3F

secondary

#80BEBD

accent

#D6D352

background

#FCF7F7

surface

#F9EDED

border

#D2C8C8

text

#140908

muted

#827B7B

Preview Lab

Preview with #A63D3F

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

Preview Lab → · Contrast checker → · Palette generator →