#A63B22#A63B22

#A63B22 is a mid, vivid red. Relative luminance 0.114; OKLCH L 50.0% C 0.146 H 34.5°. Best body text is #FFFFFF at 6.42:1 contrast (WCAG AA passes).

Color values

HEX	#A63B22
RGB	rgb(166, 59, 34)
HSL	hsl(11, 66%, 39%)
HSV	hsv(11, 80%, 65%)
CMYK	cmyk(0%, 64.5%, 79.5%, 34.9%)
CIE-LAB	lab(40.17, 42.78, 37.96)
CIE-LCH	lch(40.17, 57.19, 41.58°)
OKLab	oklab(50.05% 0.1207 0.0828)
OKLCH	oklch(50.05% 0.146 34.5)
XYZ	xyz(17.5805, 11.3529, 2.7787)
Luminance	0.1135 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63B22 #228DA6

analogous

#A6224B #A63B22 #A67D22

triadic

#A63B22 #22A63B #3B22A6

tetradic

#A63B22 #4BA622 #228DA6 #7D22A6

square

#A63B22 #4BA622 #228DA6 #7D22A6

split-complementary

#A63B22 #22A67D #224BA6

monochromatic

#40170D #732918 #A63B22 #D55030 #DF7B63

Accessibility & contrast

On white

6.42

#A63B22 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.27

#A63B22 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63B22

6.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63B22	#FFFFFF	#000000	##FFFFFF
##A63B22	1.00	6.42	3.27	6.42
#FFFFFF	6.42	1.00	21.00	1.00
#000000	3.27	21.00	1.00	21.00
##FFFFFF	6.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#59501E

Deuteranopia (green-blind)

#74671E

Tritanopia (blue-blind)

#B71E36

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a63b22;
/* rgb */ color: rgb(166, 59, 34);
/* oklch */ color: oklch(50.0% 0.146 34.5);

Tailwind

colors: {
  custom: {
    50: '#c8765f',
    500: '#a63b22',
    950: '#000000',
  },
}

SCSS

$custom: #a63b22;
$custom-light: #c8765f;
$custom-dark: #000000;

JSON

{
  "hex": "#a63b22",
  "rgb": {
    "r": 166,
    "g": 59,
    "b": 34
  },
  "hsl": {
    "h": 11.364,
    "s": 66,
    "l": 39.216
  },
  "oklch": {
    "l": 0.50047,
    "c": 0.14632,
    "h": 34.5
  },
  "luminance": 0.1135
}

Semantic roles & 50–950 ramp

primary

#A63B22

secondary

#5FB1C4

accent

#C9E93F

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150904

muted

#837B79

Preview Lab

Preview with #A63B22

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

Preview Lab → · Contrast checker → · Palette generator →