#A63F22#A63F22

#A63F22 is a mid, vivid red. Relative luminance 0.118; OKLCH L 50.6% C 0.143 H 36.3°. Best body text is #FFFFFF at 6.26:1 contrast (WCAG AA passes).

Color values

HEX	#A63F22
RGB	rgb(166, 63, 34)
HSL	hsl(13, 66%, 39%)
HSV	hsv(13, 80%, 65%)
CMYK	cmyk(0%, 62%, 79.5%, 34.9%)
CIE-LAB	lab(40.86, 40.93, 38.66)
CIE-LCH	lch(40.86, 56.30, 43.37°)
OKLab	oklab(50.57% 0.1149 0.0843)
OKLCH	oklch(50.57% 0.143 36.3)
XYZ	xyz(17.7941, 11.7800, 2.8498)
Luminance	0.1178 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63F22 #2289A6

analogous

#A62247 #A63F22 #A68122

triadic

#A63F22 #22A63F #3F22A6

tetradic

#A63F22 #47A622 #2289A6 #8122A6

square

#A63F22 #47A622 #2289A6 #8122A6

split-complementary

#A63F22 #22A681 #2247A6

monochromatic

#40180D #732C18 #A63F22 #D55530 #DF7E63

Accessibility & contrast

On white

6.26

#A63F22 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.36

#A63F22 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63F22

6.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63F22	#FFFFFF	#000000	##FFFFFF
##A63F22	1.00	6.26	3.36	6.26
#FFFFFF	6.26	1.00	21.00	1.00
#000000	3.36	21.00	1.00	21.00
##FFFFFF	6.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C521E

Deuteranopia (green-blind)

#75691E

Tritanopia (blue-blind)

#B72539

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #a63f22;
/* rgb */ color: rgb(166, 63, 34);
/* oklch */ color: oklch(50.6% 0.143 36.3);

Tailwind

colors: {
  custom: {
    50: '#c8785f',
    500: '#a63f22',
    950: '#000000',
  },
}

SCSS

$custom: #a63f22;
$custom-light: #c8785f;
$custom-dark: #000000;

JSON

{
  "hex": "#a63f22",
  "rgb": {
    "r": 166,
    "g": 63,
    "b": 34
  },
  "hsl": {
    "h": 13.182,
    "s": 66,
    "l": 39.216
  },
  "oklch": {
    "l": 0.50572,
    "c": 0.14254,
    "h": 36.3
  },
  "luminance": 0.11777
}

Semantic roles & 50–950 ramp

primary

#A63F22

secondary

#5FAEC4

accent

#C4E93F

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150905

muted

#837B79

Preview Lab

Preview with #A63F22

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

Preview Lab → · Contrast checker → · Palette generator →