#A63B40#A63B40

#A63B40 is a mid, vivid red. Relative luminance 0.116; OKLCH L 50.5% C 0.141 H 21.0°. Best body text is #FFFFFF at 6.32:1 contrast (WCAG AA passes).

Color values

HEX	#A63B40
RGB	rgb(166, 59, 64)
HSL	hsl(357, 48%, 44%)
HSV	hsv(357, 64%, 65%)
CMYK	cmyk(0%, 64.5%, 61.4%, 34.9%)
CIE-LAB	lab(40.59, 44.38, 20.90)
CIE-LCH	lch(40.59, 49.06, 25.22°)
OKLab	oklab(50.49% 0.1316 0.0506)
OKLCH	oklch(50.49% 0.141 21)
XYZ	xyz(18.2170, 11.6075, 6.1307)
Luminance	0.1161 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63B40 #3BA6A1

analogous

#A63B76 #A63B40 #A66C3B

triadic

#A63B40 #40A63B #3B40A6

tetradic

#A63B40 #76A63B #3BA6A1 #6C3BA6

square

#A63B40 #76A63B #3BA6A1 #6C3BA6

split-complementary

#A63B40 #3BA66C #3B76A6

monochromatic

#4C1B1D #792B2F #A63B40 #C45A5F #D4878B

Accessibility & contrast

On white

6.32

#A63B40 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.32

#A63B40 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63B40

6.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63B40	#FFFFFF	#000000	##FFFFFF
##A63B40	1.00	6.32	3.32	6.32
#FFFFFF	6.32	1.00	21.00	1.00
#000000	3.32	21.00	1.00	21.00
##FFFFFF	6.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#56513F

Deuteranopia (green-blind)

#71683D

Tritanopia (blue-blind)

#B6253E

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #a63b40;
/* rgb */ color: rgb(166, 59, 64);
/* oklch */ color: oklch(50.5% 0.141 21.0);

Tailwind

colors: {
  custom: {
    50: '#c67674',
    500: '#a63b40',
    950: '#000000',
  },
}

SCSS

$custom: #a63b40;
$custom-light: #c67674;
$custom-dark: #000000;

JSON

{
  "hex": "#a63b40",
  "rgb": {
    "r": 166,
    "g": 59,
    "b": 64
  },
  "hsl": {
    "h": 357.196,
    "s": 47.556,
    "l": 44.118
  },
  "oklch": {
    "l": 0.50494,
    "c": 0.14103,
    "h": 21
  },
  "luminance": 0.11605
}

Semantic roles & 50–950 ramp

primary

#A63B40

secondary

#7EBFBC

accent

#D7D151

background

#FDF7F7

surface

#FAEDED

border

#D3C8C8

text

#140908

muted

#837B7B

Preview Lab

Preview with #A63B40

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

Preview Lab → · Contrast checker → · Palette generator →