#A63F2F#A63F2F

#A63F2F is a mid, vivid red. Relative luminance 0.119; OKLCH L 50.7% C 0.139 H 31.2°. Best body text is #FFFFFF at 6.23:1 contrast (WCAG AA passes).

Color values

HEX	#A63F2F
RGB	rgb(166, 63, 47)
HSL	hsl(8, 56%, 42%)
HSV	hsv(8, 72%, 65%)
CMYK	cmyk(0%, 62%, 71.7%, 34.9%)
CIE-LAB	lab(41.01, 41.50, 31.63)
CIE-LCH	lch(41.01, 52.18, 37.31°)
OKLab	oklab(50.73% 0.1193 0.0723)
OKLCH	oklch(50.73% 0.139 31.2)
XYZ	xyz(18.0183, 11.8697, 4.0311)
Luminance	0.1187 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63F2F #2F96A6

analogous

#A62F5B #A63F2F #A67B2F

triadic

#A63F2F #2FA63F #3F2FA6

tetradic

#A63F2F #5BA62F #2F96A6 #7B2FA6

square

#A63F2F #5BA62F #2F96A6 #7B2FA6

split-complementary

#A63F2F #2FA67B #2F5BA6

monochromatic

#471B14 #762D21 #A63F2F #CB5947 #D88477

Accessibility & contrast

On white

6.23

#A63F2F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.37

#A63F2F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63F2F

6.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63F2F	#FFFFFF	#000000	##FFFFFF
##A63F2F	1.00	6.23	3.37	6.23
#FFFFFF	6.23	1.00	21.00	1.00
#000000	3.37	21.00	1.00	21.00
##FFFFFF	6.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B532D

Deuteranopia (green-blind)

#75692C

Tritanopia (blue-blind)

#B6273C

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #a63f2f;
/* rgb */ color: rgb(166, 63, 47);
/* oklch */ color: oklch(50.7% 0.139 31.2);

Tailwind

colors: {
  custom: {
    50: '#c77868',
    500: '#a63f2f',
    950: '#000000',
  },
}

SCSS

$custom: #a63f2f;
$custom-light: #c77868;
$custom-dark: #000000;

JSON

{
  "hex": "#a63f2f",
  "rgb": {
    "r": 166,
    "g": 63,
    "b": 47
  },
  "hsl": {
    "h": 8.067,
    "s": 55.869,
    "l": 41.765
  },
  "oklch": {
    "l": 0.50726,
    "c": 0.13944,
    "h": 31.2
  },
  "luminance": 0.11867
}

Semantic roles & 50–950 ramp

primary

#A63F2F

secondary

#70B6C1

accent

#CBDF49

background

#FDF7F6

surface

#FAEEEB

border

#D3C9C6

text

#140906

muted

#837B7A

Preview Lab

Preview with #A63F2F

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

Preview Lab → · Contrast checker → · Palette generator →