#A63B1E#A63B1E

#A63B1E is a mid, vivid red. Relative luminance 0.113; OKLCH L 50.0% C 0.147 H 35.7°. Best body text is #FFFFFF at 6.43:1 contrast (WCAG AA passes).

Color values

HEX	#A63B1E
RGB	rgb(166, 59, 30)
HSL	hsl(13, 69%, 38%)
HSV	hsv(13, 82%, 65%)
CMYK	cmyk(0%, 64.5%, 81.9%, 34.9%)
CIE-LAB	lab(40.13, 42.64, 39.99)
CIE-LCH	lch(40.13, 58.46, 43.17°)
OKLab	oklab(50.01% 0.1195 0.086)
OKLCH	oklch(50.01% 0.147 35.7)
XYZ	xyz(17.5262, 11.3312, 2.4923)
Luminance	0.1133 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63B1E #1E89A6

analogous

#A61E45 #A63B1E #A67F1E

triadic

#A63B1E #1EA63B #3B1EA6

tetradic

#A63B1E #45A61E #1E89A6 #7F1EA6

square

#A63B1E #45A61E #1E89A6 #7F1EA6

split-complementary

#A63B1E #1EA67F #1E45A6

monochromatic

#3E160B #722915 #A63B1E #D84E29 #E2795D

Accessibility & contrast

On white

6.43

#A63B1E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.27

#A63B1E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63B1E

6.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63B1E	#FFFFFF	#000000	##FFFFFF
##A63B1E	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)

#5A501A

Deuteranopia (green-blind)

#746719

Tritanopia (blue-blind)

#B71E35

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a63b1e;
/* rgb */ color: rgb(166, 59, 30);
/* oklch */ color: oklch(50.0% 0.147 35.7);

Tailwind

colors: {
  custom: {
    50: '#c9765c',
    500: '#a63b1e',
    950: '#000000',
  },
}

SCSS

$custom: #a63b1e;
$custom-light: #c9765c;
$custom-dark: #000000;

JSON

{
  "hex": "#a63b1e",
  "rgb": {
    "r": 166,
    "g": 59,
    "b": 30
  },
  "hsl": {
    "h": 12.794,
    "s": 69.388,
    "l": 38.431
  },
  "oklch": {
    "l": 0.50009,
    "c": 0.1472,
    "h": 35.7
  },
  "luminance": 0.11329
}

Semantic roles & 50–950 ramp

primary

#A63B1E

secondary

#5AAFC6

accent

#C7EC3C

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150904

muted

#837B79

Preview Lab

Preview with #A63B1E

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

Preview Lab → · Contrast checker → · Palette generator →