#A33331#A33331

#A33331 is a mid, vivid red. Relative luminance 0.104; OKLCH L 48.8% C 0.148 H 25.4°. Best body text is #FFFFFF at 6.83:1 contrast (WCAG AA passes).

Color values

HEX	#A33331
RGB	rgb(163, 51, 49)
HSL	hsl(1, 54%, 42%)
HSV	hsv(1, 70%, 64%)
CMYK	cmyk(0%, 68.7%, 69.9%, 36.1%)
CIE-LAB	lab(38.51, 45.88, 27.38)
CIE-LCH	lch(38.51, 53.43, 30.83°)
OKLab	oklab(48.76% 0.1338 0.0635)
OKLCH	oklch(48.76% 0.148 25.4)
XYZ	xyz(16.8443, 10.3784, 4.0214)
Luminance	0.1038 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A33331 #31A1A3

analogous

#A33168 #A33331 #A36C31

triadic

#A33331 #31A333 #3331A3

tetradic

#A33331 #68A331 #31A1A3 #6C31A3

square

#A33331 #68A331 #31A1A3 #6C31A3

split-complementary

#A33331 #31A36C #3168A3

monochromatic

#451615 #742423 #A33331 #C84B49 #D67A78

Accessibility & contrast

On white

6.83

#A33331 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.08

#A33331 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A33331

6.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A33331	#FFFFFF	#000000	##FFFFFF
##A33331	1.00	6.83	3.08	6.83
#FFFFFF	6.83	1.00	21.00	1.00
#000000	3.08	21.00	1.00	21.00
##FFFFFF	6.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#524B30

Deuteranopia (green-blind)

#6E642E

Tritanopia (blue-blind)

#B31334

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #a33331;
/* rgb */ color: rgb(163, 51, 49);
/* oklch */ color: oklch(48.8% 0.148 25.4);

Tailwind

colors: {
  custom: {
    50: '#c57269',
    500: '#a33331',
    950: '#000000',
  },
}

SCSS

$custom: #a33331;
$custom-light: #c57269;
$custom-dark: #000000;

JSON

{
  "hex": "#a33331",
  "rgb": {
    "r": 163,
    "g": 51,
    "b": 49
  },
  "hsl": {
    "h": 1.053,
    "s": 53.774,
    "l": 41.569
  },
  "oklch": {
    "l": 0.4876,
    "c": 0.14805,
    "h": 25.4
  },
  "luminance": 0.10376
}

Semantic roles & 50–950 ramp

primary

#A33331

secondary

#71BDBF

accent

#DBDD4B

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140806

muted

#837B7A

Preview Lab

Preview with #A33331

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

Preview Lab → · Contrast checker → · Palette generator →