#A33037#A33037

#A33037 is a mid, vivid red. Relative luminance 0.102; OKLCH L 48.5% C 0.150 H 21.5°. Best body text is #FFFFFF at 6.92:1 contrast (WCAG AA passes).

Color values

HEX	#A33037
RGB	rgb(163, 48, 55)
HSL	hsl(356, 55%, 41%)
HSV	hsv(356, 71%, 64%)
CMYK	cmyk(0%, 70.6%, 66.3%, 36.1%)
CIE-LAB	lab(38.16, 47.44, 23.27)
CIE-LCH	lch(38.16, 52.84, 26.13°)
OKLab	oklab(48.53% 0.14 0.0552)
OKLCH	oklch(48.53% 0.15 21.5)
XYZ	xyz(16.8526, 10.1787, 4.6910)
Luminance	0.1018 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A33037 #30A39C

analogous

#A33071 #A33037 #A36330

triadic

#A33037 #37A330 #3037A3

tetradic

#A33037 #71A330 #30A39C #6330A3

square

#A33037 #71A330 #30A39C #6330A3

split-complementary

#A33037 #30A363 #3071A3

monochromatic

#441417 #742227 #A33037 #C9474F #D7777C

Accessibility & contrast

On white

6.92

#A33037 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.04

#A33037 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A33037

6.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A33037	#FFFFFF	#000000	##FFFFFF
##A33037	1.00	6.92	3.04	6.92
#FFFFFF	6.92	1.00	21.00	1.00
#000000	3.04	21.00	1.00	21.00
##FFFFFF	6.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F4A36

Deuteranopia (green-blind)

#6C6334

Tritanopia (blue-blind)

#B30E34

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #a33037;
/* rgb */ color: rgb(163, 48, 55);
/* oklch */ color: oklch(48.5% 0.150 21.5);

Tailwind

colors: {
  custom: {
    50: '#c5706d',
    500: '#a33037',
    950: '#000000',
  },
}

SCSS

$custom: #a33037;
$custom-light: #c5706d;
$custom-dark: #000000;

JSON

{
  "hex": "#a33037",
  "rgb": {
    "r": 163,
    "g": 48,
    "b": 55
  },
  "hsl": {
    "h": 356.348,
    "s": 54.502,
    "l": 41.373
  },
  "oklch": {
    "l": 0.48527,
    "c": 0.15045,
    "h": 21.5
  },
  "luminance": 0.10176
}

Semantic roles & 50–950 ramp

primary

#A33037

secondary

#70BFBA

accent

#DED54A

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140807

muted

#837B7A

Preview Lab

Preview with #A33037

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

Preview Lab → · Contrast checker → · Palette generator →