#A63D27#A63D27

#A63D27 is a mid, vivid red. Relative luminance 0.116; OKLCH L 50.4% C 0.143 H 33.6°. Best body text is #FFFFFF at 6.33:1 contrast (WCAG AA passes).

Color values

HEX	#A63D27
RGB	rgb(166, 61, 39)
HSL	hsl(10, 62%, 40%)
HSV	hsv(10, 77%, 65%)
CMYK	cmyk(0%, 63.3%, 76.5%, 34.9%)
CIE-LAB	lab(40.56, 42.06, 35.66)
CIE-LCH	lch(40.56, 55.14, 40.30°)
OKLab	oklab(50.36% 0.1194 0.0792)
OKLCH	oklch(50.36% 0.143 33.6)
XYZ	xyz(17.7627, 11.5935, 3.2215)
Luminance	0.1159 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63D27 #2790A6

analogous

#A62750 #A63D27 #A67D27

triadic

#A63D27 #27A63D #3D27A6

tetradic

#A63D27 #50A627 #2790A6 #7D27A6

square

#A63D27 #50A627 #2790A6 #7D27A6

split-complementary

#A63D27 #27A67D #2750A6

monochromatic

#431910 #742B1B #A63D27 #D1543A #DC7F6B

Accessibility & contrast

On white

6.33

#A63D27 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.32

#A63D27 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63D27

6.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63D27	#FFFFFF	#000000	##FFFFFF
##A63D27	1.00	6.33	3.32	6.33
#FFFFFF	6.33	1.00	21.00	1.00
#000000	3.32	21.00	1.00	21.00
##FFFFFF	6.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5124

Deuteranopia (green-blind)

#746823

Tritanopia (blue-blind)

#B72339

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #a63d27;
/* rgb */ color: rgb(166, 61, 39);
/* oklch */ color: oklch(50.4% 0.143 33.6);

Tailwind

colors: {
  custom: {
    50: '#c87762',
    500: '#a63d27',
    950: '#000000',
  },
}

SCSS

$custom: #a63d27;
$custom-light: #c87762;
$custom-dark: #000000;

JSON

{
  "hex": "#a63d27",
  "rgb": {
    "r": 166,
    "g": 61,
    "b": 39
  },
  "hsl": {
    "h": 10.394,
    "s": 61.951,
    "l": 40.196
  },
  "oklch": {
    "l": 0.5036,
    "c": 0.14328,
    "h": 33.6
  },
  "luminance": 0.11591
}

Semantic roles & 50–950 ramp

primary

#A63D27

secondary

#66B3C3

accent

#C9E543

background

#FDF7F5

surface

#FAEDEA

border

#D3C8C6

text

#150905

muted

#837B79

Preview Lab

Preview with #A63D27

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

Preview Lab → · Contrast checker → · Palette generator →