#A63A1D#A63A1D

#A63A1D is a mid, vivid red. Relative luminance 0.112; OKLCH L 49.9% C 0.148 H 35.6°. Best body text is #FFFFFF at 6.47:1 contrast (WCAG AA passes).

Color values

HEX	#A63A1D
RGB	rgb(166, 58, 29)
HSL	hsl(13, 70%, 38%)
HSV	hsv(13, 83%, 65%)
CMYK	cmyk(0%, 65.1%, 82.5%, 34.9%)
CIE-LAB	lab(39.96, 43.06, 40.33)
CIE-LCH	lch(39.96, 58.99, 43.13°)
OKLab	oklab(49.87% 0.1206 0.0864)
OKLCH	oklch(49.87% 0.148 35.6)
XYZ	xyz(17.4627, 11.2244, 2.4092)
Luminance	0.1122 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63A1D #1D89A6

analogous

#A61D44 #A63A1D #A67E1D

triadic

#A63A1D #1DA63A #3A1DA6

tetradic

#A63A1D #44A61D #1D89A6 #7E1DA6

square

#A63A1D #44A61D #1D89A6 #7E1DA6

split-complementary

#A63A1D #1DA67E #1D44A6

monochromatic

#3E160B #722814 #A63A1D #D94D27 #E2785B

Accessibility & contrast

On white

6.47

#A63A1D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.24

#A63A1D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63A1D

6.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63A1D	#FFFFFF	#000000	##FFFFFF
##A63A1D	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)

#594F18

Deuteranopia (green-blind)

#746718

Tritanopia (blue-blind)

#B71C34

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #a63a1d;
/* rgb */ color: rgb(166, 58, 29);
/* oklch */ color: oklch(49.9% 0.148 35.6);

Tailwind

colors: {
  custom: {
    50: '#c9755c',
    500: '#a63a1d',
    950: '#000000',
  },
}

SCSS

$custom: #a63a1d;
$custom-light: #c9755c;
$custom-dark: #000000;

JSON

{
  "hex": "#a63a1d",
  "rgb": {
    "r": 166,
    "g": 58,
    "b": 29
  },
  "hsl": {
    "h": 12.701,
    "s": 70.256,
    "l": 38.235
  },
  "oklch": {
    "l": 0.49873,
    "c": 0.14833,
    "h": 35.6
  },
  "luminance": 0.11222
}

Semantic roles & 50–950 ramp

primary

#A63A1D

secondary

#59AFC6

accent

#C7ED3B

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150904

muted

#837B79

Preview Lab

Preview with #A63A1D

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

Preview Lab → · Contrast checker → · Palette generator →