#A63C31#A63C31

#A63C31 is a mid, vivid red. Relative luminance 0.116; OKLCH L 50.4% C 0.142 H 29.0°. Best body text is #FFFFFF at 6.34:1 contrast (WCAG AA passes).

Color values

HEX	#A63C31
RGB	rgb(166, 60, 49)
HSL	hsl(6, 54%, 42%)
HSV	hsv(6, 70%, 65%)
CMYK	cmyk(0%, 63.9%, 70.5%, 34.9%)
CIE-LAB	lab(40.51, 43.00, 29.89)
CIE-LCH	lch(40.51, 52.37, 34.80°)
OKLab	oklab(50.36% 0.1243 0.0688)
OKLCH	oklch(50.36% 0.142 29)
XYZ	xyz(17.8980, 11.5629, 4.1945)
Luminance	0.1156 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63C31 #319BA6

analogous

#A63161 #A63C31 #A67731

triadic

#A63C31 #31A63C #3C31A6

tetradic

#A63C31 #61A631 #319BA6 #7731A6

square

#A63C31 #61A631 #319BA6 #7731A6

split-complementary

#A63C31 #31A677 #3161A6

monochromatic

#471A15 #772B23 #A63C31 #CA564A #D8837A

Accessibility & contrast

On white

6.34

#A63C31 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.31

#A63C31 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63C31

6.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63C31	#FFFFFF	#000000	##FFFFFF
##A63C31	1.00	6.34	3.31	6.34
#FFFFFF	6.34	1.00	21.00	1.00
#000000	3.31	21.00	1.00	21.00
##FFFFFF	6.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#59512F

Deuteranopia (green-blind)

#73682E

Tritanopia (blue-blind)

#B6233A

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a63c31;
/* rgb */ color: rgb(166, 60, 49);
/* oklch */ color: oklch(50.4% 0.142 29.0);

Tailwind

colors: {
  custom: {
    50: '#c77769',
    500: '#a63c31',
    950: '#000000',
  },
}

SCSS

$custom: #a63c31;
$custom-light: #c77769;
$custom-dark: #000000;

JSON

{
  "hex": "#a63c31",
  "rgb": {
    "r": 166,
    "g": 60,
    "b": 49
  },
  "hsl": {
    "h": 5.641,
    "s": 54.419,
    "l": 42.157
  },
  "oklch": {
    "l": 0.50362,
    "c": 0.14211,
    "h": 29
  },
  "luminance": 0.1156
}

Semantic roles & 50–950 ramp

primary

#A63C31

secondary

#73B9C0

accent

#D0DE4A

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140906

muted

#837B7A

Preview Lab

Preview with #A63C31

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

Preview Lab → · Contrast checker → · Palette generator →