#A63A2B#A63A2B

#A63A2B is a mid, vivid red. Relative luminance 0.113; OKLCH L 50.0% C 0.145 H 30.7°. Best body text is #FFFFFF at 6.44:1 contrast (WCAG AA passes).

Color values

HEX	#A63A2B
RGB	rgb(166, 58, 43)
HSL	hsl(7, 59%, 41%)
HSV	hsv(7, 74%, 65%)
CMYK	cmyk(0%, 65.1%, 74.1%, 34.9%)
CIE-LAB	lab(40.10, 43.60, 32.90)
CIE-LCH	lch(40.10, 54.62, 37.04°)
OKLab	oklab(50.03% 0.125 0.0742)
OKLCH	oklch(50.03% 0.145 30.7)
XYZ	xyz(17.6769, 11.3100, 3.5373)
Luminance	0.1131 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63A2B #2B97A6

analogous

#A62B59 #A63A2B #A6772B

triadic

#A63A2B #2BA63A #3A2BA6

tetradic

#A63A2B #59A62B #2B97A6 #772BA6

square

#A63A2B #59A62B #2B97A6 #772BA6

split-complementary

#A63A2B #2BA677 #2B59A6

monochromatic

#451812 #75291E #A63A2B #CE5241 #DA7E71

Accessibility & contrast

On white

6.44

#A63A2B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.26

#A63A2B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63A2B

6.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63A2B	#FFFFFF	#000000	##FFFFFF
##A63A2B	1.00	6.44	3.26	6.44
#FFFFFF	6.44	1.00	21.00	1.00
#000000	3.26	21.00	1.00	21.00
##FFFFFF	6.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#585029

Deuteranopia (green-blind)

#736727

Tritanopia (blue-blind)

#B71E37

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #a63a2b;
/* rgb */ color: rgb(166, 58, 43);
/* oklch */ color: oklch(50.0% 0.145 30.7);

Tailwind

colors: {
  custom: {
    50: '#c87565',
    500: '#a63a2b',
    950: '#000000',
  },
}

SCSS

$custom: #a63a2b;
$custom-light: #c87565;
$custom-dark: #000000;

JSON

{
  "hex": "#a63a2b",
  "rgb": {
    "r": 166,
    "g": 58,
    "b": 43
  },
  "hsl": {
    "h": 7.317,
    "s": 58.852,
    "l": 40.98
  },
  "oklch": {
    "l": 0.50025,
    "c": 0.14535,
    "h": 30.7
  },
  "luminance": 0.11308
}

Semantic roles & 50–950 ramp

primary

#A63A2B

secondary

#6BB7C1

accent

#CFE246

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140905

muted

#837B7A

Preview Lab

Preview with #A63A2B

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

Preview Lab → · Contrast checker → · Palette generator →