#A63A40#A63A40

#A63A40 is a mid, vivid red. Relative luminance 0.115; OKLCH L 50.4% C 0.142 H 20.6°. Best body text is #FFFFFF at 6.36:1 contrast (WCAG AA passes).

Color values

HEX	#A63A40
RGB	rgb(166, 58, 64)
HSL	hsl(357, 48%, 44%)
HSV	hsv(357, 65%, 65%)
CMYK	cmyk(0%, 65.1%, 61.4%, 34.9%)
CIE-LAB	lab(40.42, 44.83, 20.69)
CIE-LCH	lch(40.42, 49.37, 24.78°)
OKLab	oklab(50.37% 0.1331 0.0501)
OKLCH	oklch(50.37% 0.142 20.6)
XYZ	xyz(18.1661, 11.5057, 6.1137)
Luminance	0.1150 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63A40 #3AA6A0

analogous

#A63A76 #A63A40 #A66A3A

triadic

#A63A40 #40A63A #3A40A6

tetradic

#A63A40 #76A63A #3AA6A0 #6A3AA6

square

#A63A40 #76A63A #3AA6A0 #6A3AA6

split-complementary

#A63A40 #3AA66A #3A76A6

monochromatic

#4B1A1D #792A2F #A63A40 #C5585E #D5868A

Accessibility & contrast

On white

6.36

#A63A40 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#A63A40 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63A40

6.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63A40	#FFFFFF	#000000	##FFFFFF
##A63A40	1.00	6.36	3.30	6.36
#FFFFFF	6.36	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#56513F

Deuteranopia (green-blind)

#71683D

Tritanopia (blue-blind)

#B6233D

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a63a40;
/* rgb */ color: rgb(166, 58, 64);
/* oklch */ color: oklch(50.4% 0.142 20.6);

Tailwind

colors: {
  custom: {
    50: '#c67674',
    500: '#a63a40',
    950: '#000000',
  },
}

SCSS

$custom: #a63a40;
$custom-light: #c67674;
$custom-dark: #000000;

JSON

{
  "hex": "#a63a40",
  "rgb": {
    "r": 166,
    "g": 58,
    "b": 64
  },
  "hsl": {
    "h": 356.667,
    "s": 48.214,
    "l": 43.922
  },
  "oklch": {
    "l": 0.5037,
    "c": 0.14218,
    "h": 20.6
  },
  "luminance": 0.11503
}

Semantic roles & 50–950 ramp

primary

#A63A40

secondary

#7DBFBB

accent

#D8D050

background

#FDF7F7

surface

#FAEDED

border

#D3C8C8

text

#140908

muted

#837B7B

Preview Lab

Preview with #A63A40

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

Preview Lab → · Contrast checker → · Palette generator →