#A63F36#A63F36

#A63F36 is a mid, vivid red. Relative luminance 0.119; OKLCH L 50.8% C 0.138 H 27.9°. Best body text is #FFFFFF at 6.20:1 contrast (WCAG AA passes).

Color values

HEX	#A63F36
RGB	rgb(166, 63, 54)
HSL	hsl(5, 51%, 43%)
HSV	hsv(5, 67%, 65%)
CMYK	cmyk(0%, 62%, 67.5%, 34.9%)
CIE-LAB	lab(41.11, 41.89, 27.63)
CIE-LCH	lch(41.11, 50.19, 33.41°)
OKLab	oklab(50.83% 0.1219 0.0647)
OKLCH	oklch(50.83% 0.138 27.9)
XYZ	xyz(18.1710, 11.9308, 4.8353)
Luminance	0.1193 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63F36 #369DA6

analogous

#A63665 #A63F36 #A67736

triadic

#A63F36 #36A63F #3F36A6

tetradic

#A63F36 #65A636 #369DA6 #7736A6

square

#A63F36 #65A636 #369DA6 #7736A6

split-complementary

#A63F36 #36A677 #3665A6

monochromatic

#4A1C18 #782D27 #A63F36 #C75C52 #D68781

Accessibility & contrast

On white

6.20

#A63F36 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.39

#A63F36 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63F36

6.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63F36	#FFFFFF	#000000	##FFFFFF
##A63F36	1.00	6.20	3.39	6.20
#FFFFFF	6.20	1.00	21.00	1.00
#000000	3.39	21.00	1.00	21.00
##FFFFFF	6.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5334

Deuteranopia (green-blind)

#746933

Tritanopia (blue-blind)

#B6293D

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #a63f36;
/* rgb */ color: rgb(166, 63, 54);
/* oklch */ color: oklch(50.8% 0.138 27.9);

Tailwind

colors: {
  custom: {
    50: '#c7786d',
    500: '#a63f36',
    950: '#000000',
  },
}

SCSS

$custom: #a63f36;
$custom-light: #c7786d;
$custom-dark: #000000;

JSON

{
  "hex": "#a63f36",
  "rgb": {
    "r": 166,
    "g": 63,
    "b": 54
  },
  "hsl": {
    "h": 4.821,
    "s": 50.909,
    "l": 43.137
  },
  "oklch": {
    "l": 0.50831,
    "c": 0.13797,
    "h": 27.9
  },
  "luminance": 0.11928
}

Semantic roles & 50–950 ramp

primary

#A63F36

secondary

#79BABF

accent

#CFDA4D

background

#FDF7F6

surface

#FAEEEB

border

#D3C9C6

text

#140907

muted

#837B7A

Preview Lab

Preview with #A63F36

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

Preview Lab → · Contrast checker → · Palette generator →