#A63A22#A63A22

#A63A22 is a mid, vivid red. Relative luminance 0.112; OKLCH L 49.9% C 0.147 H 34.0°. Best body text is #FFFFFF at 6.46:1 contrast (WCAG AA passes).

Color values

HEX	#A63A22
RGB	rgb(166, 58, 34)
HSL	hsl(11, 66%, 39%)
HSV	hsv(11, 80%, 65%)
CMYK	cmyk(0%, 65.1%, 79.5%, 34.9%)
CIE-LAB	lab(40.00, 43.23, 37.79)
CIE-LCH	lch(40.00, 57.42, 41.16°)
OKLab	oklab(49.92% 0.122 0.0824)
OKLCH	oklch(49.92% 0.147 34)
XYZ	xyz(17.5296, 11.2511, 2.7617)
Luminance	0.1125 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63A22 #228EA6

analogous

#A6224C #A63A22 #A67C22

triadic

#A63A22 #22A63A #3A22A6

tetradic

#A63A22 #4CA622 #228EA6 #7C22A6

square

#A63A22 #4CA622 #228EA6 #7C22A6

split-complementary

#A63A22 #22A67C #224CA6

monochromatic

#40170D #732818 #A63A22 #D54E30 #DF7A63

Accessibility & contrast

On white

6.46

#A63A22 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.25

#A63A22 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63A22

6.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63A22	#FFFFFF	#000000	##FFFFFF
##A63A22	1.00	6.46	3.25	6.46
#FFFFFF	6.46	1.00	21.00	1.00
#000000	3.25	21.00	1.00	21.00
##FFFFFF	6.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#594F1E

Deuteranopia (green-blind)

#73671E

Tritanopia (blue-blind)

#B71C35

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #a63a22;
/* rgb */ color: rgb(166, 58, 34);
/* oklch */ color: oklch(49.9% 0.147 34.0);

Tailwind

colors: {
  custom: {
    50: '#c8755f',
    500: '#a63a22',
    950: '#000000',
  },
}

SCSS

$custom: #a63a22;
$custom-light: #c8755f;
$custom-dark: #000000;

JSON

{
  "hex": "#a63a22",
  "rgb": {
    "r": 166,
    "g": 58,
    "b": 34
  },
  "hsl": {
    "h": 10.909,
    "s": 66,
    "l": 39.216
  },
  "oklch": {
    "l": 0.4992,
    "c": 0.14726,
    "h": 34
  },
  "luminance": 0.11249
}

Semantic roles & 50–950 ramp

primary

#A63A22

secondary

#5FB2C4

accent

#CAE93F

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150904

muted

#837B79

Preview Lab

Preview with #A63A22

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

Preview Lab → · Contrast checker → · Palette generator →