#A63C27#A63C27

#A63C27 is a mid, vivid red. Relative luminance 0.115; OKLCH L 50.2% C 0.144 H 33.1°. Best body text is #FFFFFF at 6.37:1 contrast (WCAG AA passes).

Color values

HEX	#A63C27
RGB	rgb(166, 60, 39)
HSL	hsl(10, 62%, 40%)
HSV	hsv(10, 77%, 65%)
CMYK	cmyk(0%, 63.9%, 76.5%, 34.9%)
CIE-LAB	lab(40.39, 42.52, 35.48)
CIE-LCH	lch(40.39, 55.38, 39.84°)
OKLab	oklab(50.23% 0.1208 0.0788)
OKLCH	oklch(50.23% 0.144 33.1)
XYZ	xyz(17.7099, 11.4877, 3.2039)
Luminance	0.1148 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63C27 #2791A6

analogous

#A62752 #A63C27 #A67B27

triadic

#A63C27 #27A63C #3C27A6

tetradic

#A63C27 #52A627 #2791A6 #7B27A6

square

#A63C27 #52A627 #2791A6 #7B27A6

split-complementary

#A63C27 #27A67B #2752A6

monochromatic

#431810 #742A1B #A63C27 #D1533A #DC7E6B

Accessibility & contrast

On white

6.37

#A63C27 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#A63C27 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63C27

6.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63C27	#FFFFFF	#000000	##FFFFFF
##A63C27	1.00	6.37	3.30	6.37
#FFFFFF	6.37	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5024

Deuteranopia (green-blind)

#746823

Tritanopia (blue-blind)

#B72138

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a63c27;
/* rgb */ color: rgb(166, 60, 39);
/* oklch */ color: oklch(50.2% 0.144 33.1);

Tailwind

colors: {
  custom: {
    50: '#c87762',
    500: '#a63c27',
    950: '#000000',
  },
}

SCSS

$custom: #a63c27;
$custom-light: #c87762;
$custom-dark: #000000;

JSON

{
  "hex": "#a63c27",
  "rgb": {
    "r": 166,
    "g": 60,
    "b": 39
  },
  "hsl": {
    "h": 9.921,
    "s": 61.951,
    "l": 40.196
  },
  "oklch": {
    "l": 0.5023,
    "c": 0.14425,
    "h": 33.1
  },
  "luminance": 0.11485
}

Semantic roles & 50–950 ramp

primary

#A63C27

secondary

#66B3C3

accent

#CAE543

background

#FDF7F5

surface

#FAEDEA

border

#D3C8C6

text

#150905

muted

#837B79

Preview Lab

Preview with #A63C27

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

Preview Lab → · Contrast checker → · Palette generator →