#A63A1C#A63A1C

#A63A1C is a mid, vivid red. Relative luminance 0.112; OKLCH L 49.9% C 0.149 H 35.9°. Best body text is #FFFFFF at 6.47:1 contrast (WCAG AA passes).

Color values

HEX	#A63A1C
RGB	rgb(166, 58, 28)
HSL	hsl(13, 71%, 38%)
HSV	hsv(13, 83%, 65%)
CMYK	cmyk(0%, 65.1%, 83.1%, 34.9%)
CIE-LAB	lab(39.95, 43.03, 40.82)
CIE-LCH	lch(39.95, 59.31, 43.49°)
OKLab	oklab(49.86% 0.1203 0.0871)
OKLCH	oklch(49.86% 0.149 35.9)
XYZ	xyz(17.4505, 11.2195, 2.3451)
Luminance	0.1122 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63A1C #1C88A6

analogous

#A61C43 #A63A1C #A67F1C

triadic

#A63A1C #1CA63A #3A1CA6

tetradic

#A63A1C #43A61C #1C88A6 #7F1CA6

square

#A63A1C #43A61C #1C88A6 #7F1CA6

split-complementary

#A63A1C #1CA67F #1C43A6

monochromatic

#3D150A #722813 #A63A1C #DA4C25 #E37759

Accessibility & contrast

On white

6.47

#A63A1C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.24

#A63A1C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63A1C

6.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63A1C	#FFFFFF	#000000	##FFFFFF
##A63A1C	1.00	6.47	3.24	6.47
#FFFFFF	6.47	1.00	21.00	1.00
#000000	3.24	21.00	1.00	21.00
##FFFFFF	6.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#594F17

Deuteranopia (green-blind)

#746717

Tritanopia (blue-blind)

#B71B34

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #a63a1c;
/* rgb */ color: rgb(166, 58, 28);
/* oklch */ color: oklch(49.9% 0.149 35.9);

Tailwind

colors: {
  custom: {
    50: '#c9755b',
    500: '#a63a1c',
    950: '#000000',
  },
}

SCSS

$custom: #a63a1c;
$custom-light: #c9755b;
$custom-dark: #000000;

JSON

{
  "hex": "#a63a1c",
  "rgb": {
    "r": 166,
    "g": 58,
    "b": 28
  },
  "hsl": {
    "h": 13.043,
    "s": 71.134,
    "l": 38.039
  },
  "oklch": {
    "l": 0.49864,
    "c": 0.14853,
    "h": 35.9
  },
  "luminance": 0.11217
}

Semantic roles & 50–950 ramp

primary

#A63A1C

secondary

#57AEC7

accent

#C7EE3A

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150904

muted

#837B79

Preview Lab

Preview with #A63A1C

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

Preview Lab → · Contrast checker → · Palette generator →