#A63B20#A63B20

#A63B20 is a mid, vivid red. Relative luminance 0.113; OKLCH L 50.0% C 0.147 H 35.1°. Best body text is #FFFFFF at 6.43:1 contrast (WCAG AA passes).

Color values

HEX	#A63B20
RGB	rgb(166, 59, 32)
HSL	hsl(12, 68%, 39%)
HSV	hsv(12, 81%, 65%)
CMYK	cmyk(0%, 64.5%, 80.7%, 34.9%)
CIE-LAB	lab(40.15, 42.71, 38.99)
CIE-LCH	lch(40.15, 57.83, 42.40°)
OKLab	oklab(50.03% 0.1201 0.0844)
OKLCH	oklch(50.03% 0.147 35.1)
XYZ	xyz(17.5525, 11.3417, 2.6311)
Luminance	0.1134 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63B20 #208BA6

analogous

#A62048 #A63B20 #A67E20

triadic

#A63B20 #20A63B #3B20A6

tetradic

#A63B20 #48A620 #208BA6 #7E20A6

square

#A63B20 #48A620 #208BA6 #7E20A6

split-complementary

#A63B20 #20A67E #2048A6

monochromatic

#3F170C #732916 #A63B20 #D64F2D #E07A60

Accessibility & contrast

On white

6.43

#A63B20 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.27

#A63B20 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63B20

6.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63B20	#FFFFFF	#000000	##FFFFFF
##A63B20	1.00	6.43	3.27	6.43
#FFFFFF	6.43	1.00	21.00	1.00
#000000	3.27	21.00	1.00	21.00
##FFFFFF	6.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A501C

Deuteranopia (green-blind)

#74671C

Tritanopia (blue-blind)

#B71E36

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a63b20;
/* rgb */ color: rgb(166, 59, 32);
/* oklch */ color: oklch(50.0% 0.147 35.1);

Tailwind

colors: {
  custom: {
    50: '#c8765e',
    500: '#a63b20',
    950: '#000000',
  },
}

SCSS

$custom: #a63b20;
$custom-light: #c8765e;
$custom-dark: #000000;

JSON

{
  "hex": "#a63b20",
  "rgb": {
    "r": 166,
    "g": 59,
    "b": 32
  },
  "hsl": {
    "h": 12.09,
    "s": 67.677,
    "l": 38.824
  },
  "oklch": {
    "l": 0.50027,
    "c": 0.14676,
    "h": 35.1
  },
  "luminance": 0.11339
}

Semantic roles & 50–950 ramp

primary

#A63B20

secondary

#5DB0C5

accent

#C8EB3D

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150904

muted

#837B79

Preview Lab

Preview with #A63B20

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

Preview Lab → · Contrast checker → · Palette generator →