#A33731#A33731

#A33731 is a mid, vivid red. Relative luminance 0.107; OKLCH L 49.2% C 0.144 H 26.9°. Best body text is #FFFFFF at 6.67:1 contrast (WCAG AA passes).

Color values

HEX	#A33731
RGB	rgb(163, 55, 49)
HSL	hsl(3, 54%, 42%)
HSV	hsv(3, 70%, 64%)
CMYK	cmyk(0%, 66.3%, 69.9%, 36.1%)
CIE-LAB	lab(39.14, 44.17, 28.14)
CIE-LCH	lch(39.14, 52.37, 32.50°)
OKLab	oklab(49.23% 0.1284 0.0651)
OKLCH	oklch(49.23% 0.144 26.9)
XYZ	xyz(17.0266, 10.7431, 4.0822)
Luminance	0.1074 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A33731 #319DA3

analogous

#A33164 #A33731 #A37031

triadic

#A33731 #31A337 #3731A3

tetradic

#A33731 #64A331 #319DA3 #7031A3

square

#A33731 #64A331 #319DA3 #7031A3

split-complementary

#A33731 #31A370 #3164A3

monochromatic

#451715 #742723 #A33731 #C85049 #D67D78

Accessibility & contrast

On white

6.67

#A33731 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#A33731 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A33731

6.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A33731	#FFFFFF	#000000	##FFFFFF
##A33731	1.00	6.67	3.15	6.67
#FFFFFF	6.67	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#544D30

Deuteranopia (green-blind)

#6F652E

Tritanopia (blue-blind)

#B31C36

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #a33731;
/* rgb */ color: rgb(163, 55, 49);
/* oklch */ color: oklch(49.2% 0.144 26.9);

Tailwind

colors: {
  custom: {
    50: '#c57469',
    500: '#a33731',
    950: '#000000',
  },
}

SCSS

$custom: #a33731;
$custom-light: #c57469;
$custom-dark: #000000;

JSON

{
  "hex": "#a33731",
  "rgb": {
    "r": 163,
    "g": 55,
    "b": 49
  },
  "hsl": {
    "h": 3.158,
    "s": 53.774,
    "l": 41.569
  },
  "oklch": {
    "l": 0.49233,
    "c": 0.14394,
    "h": 26.9
  },
  "luminance": 0.10741
}

Semantic roles & 50–950 ramp

primary

#A33731

secondary

#71BBBF

accent

#D5DD4B

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140806

muted

#837B7A

Preview Lab

Preview with #A33731

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

Preview Lab → · Contrast checker → · Palette generator →