#A63F43#A63F43

#A63F43 is a mid, vivid red. Relative luminance 0.121; OKLCH L 51.1% C 0.136 H 21.0°. Best body text is #FFFFFF at 6.15:1 contrast (WCAG AA passes).

Color values

HEX	#A63F43
RGB	rgb(166, 63, 67)
HSL	hsl(358, 45%, 45%)
HSV	hsv(358, 62%, 65%)
CMYK	cmyk(0%, 62%, 59.6%, 34.9%)
CIE-LAB	lab(41.33, 42.76, 20.02)
CIE-LCH	lch(41.33, 47.22, 25.09°)
OKLab	oklab(51.07% 0.1271 0.0488)
OKLCH	oklch(51.07% 0.136 21)
XYZ	xyz(18.5182, 12.0697, 6.6636)
Luminance	0.1207 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63F43 #3FA6A2

analogous

#A63F76 #A63F43 #A66F3F

triadic

#A63F43 #43A63F #3F43A6

tetradic

#A63F43 #76A63F #3FA6A2 #6F3FA6

square

#A63F43 #76A63F #3FA6A2 #6F3FA6

split-complementary

#A63F43 #3FA66F #3F76A6

monochromatic

#4D1D1F #7A2E31 #A63F43 #C36064 #D38C8F

Accessibility & contrast

On white

6.15

#A63F43 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.41

#A63F43 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63F43

6.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63F43	#FFFFFF	#000000	##FFFFFF
##A63F43	1.00	6.15	3.41	6.15
#FFFFFF	6.15	1.00	21.00	1.00
#000000	3.41	21.00	1.00	21.00
##FFFFFF	6.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#595442

Deuteranopia (green-blind)

#736A40

Tritanopia (blue-blind)

#B52B41

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #a63f43;
/* rgb */ color: rgb(166, 63, 67);
/* oklch */ color: oklch(51.1% 0.136 21.0);

Tailwind

colors: {
  custom: {
    50: '#c67977',
    500: '#a63f43',
    950: '#000000',
  },
}

SCSS

$custom: #a63f43;
$custom-light: #c67977;
$custom-dark: #000000;

JSON

{
  "hex": "#a63f43",
  "rgb": {
    "r": 166,
    "g": 63,
    "b": 67
  },
  "hsl": {
    "h": 357.67,
    "s": 44.978,
    "l": 44.902
  },
  "oklch": {
    "l": 0.51069,
    "c": 0.13612,
    "h": 21
  },
  "luminance": 0.12067
}

Semantic roles & 50–950 ramp

primary

#A63F43

secondary

#83BEBC

accent

#D5D053

background

#FCF7F7

surface

#F9EEED

border

#D2C9C8

text

#140908

muted

#827B7B

Preview Lab

Preview with #A63F43

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

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