#A63B2A#A63B2A

#A63B2A is a mid, vivid red. Relative luminance 0.114; OKLCH L 50.1% C 0.145 H 31.5°. Best body text is #FFFFFF at 6.40:1 contrast (WCAG AA passes).

Color values

HEX	#A63B2A
RGB	rgb(166, 59, 42)
HSL	hsl(8, 60%, 41%)
HSV	hsv(8, 75%, 65%)
CMYK	cmyk(0%, 64.5%, 74.7%, 34.9%)
CIE-LAB	lab(40.25, 43.11, 33.65)
CIE-LCH	lch(40.25, 54.68, 37.97°)
OKLab	oklab(50.14% 0.1232 0.0756)
OKLCH	oklch(50.14% 0.145 31.5)
XYZ	xyz(17.7097, 11.4046, 3.4588)
Luminance	0.1140 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63B2A #2A95A6

analogous

#A62A57 #A63B2A #A6792A

triadic

#A63B2A #2AA63B #3B2AA6

tetradic

#A63B2A #57A62A #2A95A6 #792AA6

square

#A63B2A #57A62A #2A95A6 #792AA6

split-complementary

#A63B2A #2AA679 #2A57A6

monochromatic

#441811 #752A1E #A63B2A #CE533F #DB7E70

Accessibility & contrast

On white

6.40

#A63B2A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#A63B2A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63B2A

6.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63B2A	#FFFFFF	#000000	##FFFFFF
##A63B2A	1.00	6.40	3.28	6.40
#FFFFFF	6.40	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#595028

Deuteranopia (green-blind)

#736826

Tritanopia (blue-blind)

#B72038

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a63b2a;
/* rgb */ color: rgb(166, 59, 42);
/* oklch */ color: oklch(50.1% 0.145 31.5);

Tailwind

colors: {
  custom: {
    50: '#c87664',
    500: '#a63b2a',
    950: '#000000',
  },
}

SCSS

$custom: #a63b2a;
$custom-light: #c87664;
$custom-dark: #000000;

JSON

{
  "hex": "#a63b2a",
  "rgb": {
    "r": 166,
    "g": 59,
    "b": 42
  },
  "hsl": {
    "h": 8.226,
    "s": 59.615,
    "l": 40.784
  },
  "oklch": {
    "l": 0.50138,
    "c": 0.14457,
    "h": 31.5
  },
  "luminance": 0.11402
}

Semantic roles & 50–950 ramp

primary

#A63B2A

secondary

#6AB6C2

accent

#CDE345

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140905

muted

#837B7A

Preview Lab

Preview with #A63B2A

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

Preview Lab → · Contrast checker → · Palette generator →