#A63F1D#A63F1D

#A63F1D is a mid, vivid red. Relative luminance 0.118; OKLCH L 50.5% C 0.144 H 37.8°. Best body text is #FFFFFF at 6.27:1 contrast (WCAG AA passes).

Color values

HEX	#A63F1D
RGB	rgb(166, 63, 29)
HSL	hsl(15, 70%, 38%)
HSV	hsv(15, 83%, 65%)
CMYK	cmyk(0%, 62%, 82.5%, 34.9%)
CIE-LAB	lab(40.82, 40.75, 41.14)
CIE-LCH	lch(40.82, 57.91, 45.27°)
OKLab	oklab(50.53% 0.1135 0.0882)
OKLCH	oklch(50.53% 0.144 37.8)
XYZ	xyz(17.7271, 11.7532, 2.4973)
Luminance	0.1175 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63F1D #1D84A6

analogous

#A61D3F #A63F1D #A6831D

triadic

#A63F1D #1DA63F #3F1DA6

tetradic

#A63F1D #3FA61D #1D84A6 #831DA6

square

#A63F1D #3FA61D #1D84A6 #831DA6

split-complementary

#A63F1D #1DA683 #1D3FA6

monochromatic

#3E170B #722B14 #A63F1D #D95327 #E27D5B

Accessibility & contrast

On white

6.27

#A63F1D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.35

#A63F1D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63F1D

6.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63F1D	#FFFFFF	#000000	##FFFFFF
##A63F1D	1.00	6.27	3.35	6.27
#FFFFFF	6.27	1.00	21.00	1.00
#000000	3.35	21.00	1.00	21.00
##FFFFFF	6.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5218

Deuteranopia (green-blind)

#766919

Tritanopia (blue-blind)

#B72538

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #a63f1d;
/* rgb */ color: rgb(166, 63, 29);
/* oklch */ color: oklch(50.5% 0.144 37.8);

Tailwind

colors: {
  custom: {
    50: '#c8785c',
    500: '#a63f1d',
    950: '#000000',
  },
}

SCSS

$custom: #a63f1d;
$custom-light: #c8785c;
$custom-dark: #000000;

JSON

{
  "hex": "#a63f1d",
  "rgb": {
    "r": 166,
    "g": 63,
    "b": 29
  },
  "hsl": {
    "h": 14.891,
    "s": 70.256,
    "l": 38.235
  },
  "oklch": {
    "l": 0.50525,
    "c": 0.14373,
    "h": 37.8
  },
  "luminance": 0.11751
}

Semantic roles & 50–950 ramp

primary

#A63F1D

secondary

#59ABC6

accent

#C1ED3B

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150904

muted

#837B79

Preview Lab

Preview with #A63F1D

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

Preview Lab → · Contrast checker → · Palette generator →