#A63C2B#A63C2B

#A63C2B is a mid, vivid red. Relative luminance 0.115; OKLCH L 50.3% C 0.143 H 31.5°. Best body text is #FFFFFF at 6.36:1 contrast (WCAG AA passes).

Color values

HEX	#A63C2B
RGB	rgb(166, 60, 43)
HSL	hsl(8, 59%, 41%)
HSV	hsv(8, 74%, 65%)
CMYK	cmyk(0%, 63.9%, 74.1%, 34.9%)
CIE-LAB	lab(40.44, 42.70, 33.28)
CIE-LCH	lch(40.44, 54.14, 37.93°)
OKLab	oklab(50.28% 0.1222 0.075)
OKLCH	oklch(50.28% 0.143 31.5)
XYZ	xyz(17.7797, 11.5156, 3.5715)
Luminance	0.1151 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63C2B #2B95A6

analogous

#A62B57 #A63C2B #A6792B

triadic

#A63C2B #2BA63C #3C2BA6

tetradic

#A63C2B #57A62B #2B95A6 #792BA6

square

#A63C2B #57A62B #2B95A6 #792BA6

split-complementary

#A63C2B #2BA679 #2B57A6

monochromatic

#451912 #752A1E #A63C2B #CE5441 #DA8071

Accessibility & contrast

On white

6.36

#A63C2B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#A63C2B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63C2B

6.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63C2B	#FFFFFF	#000000	##FFFFFF
##A63C2B	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)

#595129

Deuteranopia (green-blind)

#746828

Tritanopia (blue-blind)

#B72239

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a63c2b;
/* rgb */ color: rgb(166, 60, 43);
/* oklch */ color: oklch(50.3% 0.143 31.5);

Tailwind

colors: {
  custom: {
    50: '#c87765',
    500: '#a63c2b',
    950: '#000000',
  },
}

SCSS

$custom: #a63c2b;
$custom-light: #c87765;
$custom-dark: #000000;

JSON

{
  "hex": "#a63c2b",
  "rgb": {
    "r": 166,
    "g": 60,
    "b": 43
  },
  "hsl": {
    "h": 8.293,
    "s": 58.852,
    "l": 40.98
  },
  "oklch": {
    "l": 0.50279,
    "c": 0.14336,
    "h": 31.5
  },
  "luminance": 0.11513
}

Semantic roles & 50–950 ramp

primary

#A63C2B

secondary

#6BB6C1

accent

#CCE246

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140905

muted

#837B7A

Preview Lab

Preview with #A63C2B

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

Preview Lab → · Contrast checker → · Palette generator →