#A33437#A33437

#A33437 is a mid, vivid red. Relative luminance 0.105; OKLCH L 49.0% C 0.146 H 22.9°. Best body text is #FFFFFF at 6.77:1 contrast (WCAG AA passes).

Color values

HEX	#A33437
RGB	rgb(163, 52, 55)
HSL	hsl(358, 52%, 42%)
HSV	hsv(358, 68%, 64%)
CMYK	cmyk(0%, 68.1%, 66.3%, 36.1%)
CIE-LAB	lab(38.76, 45.80, 24.02)
CIE-LCH	lch(38.76, 51.72, 27.67°)
OKLab	oklab(48.98% 0.1348 0.0568)
OKLCH	oklch(48.98% 0.146 22.9)
XYZ	xyz(17.0236, 10.5208, 4.7480)
Luminance	0.1052 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A33437 #34A3A0

analogous

#A3346F #A33437 #A36834

triadic

#A33437 #37A334 #3437A3

tetradic

#A33437 #6FA334 #34A3A0 #6834A3

square

#A33437 #6FA334 #34A3A0 #6834A3

split-complementary

#A33437 #34A368 #346FA3

monochromatic

#461618 #752527 #A33437 #C64E51 #D57C7F

Accessibility & contrast

On white

6.77

#A33437 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#A33437 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A33437

6.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A33437	#FFFFFF	#000000	##FFFFFF
##A33437	1.00	6.77	3.10	6.77
#FFFFFF	6.77	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#524C36

Deuteranopia (green-blind)

#6E6434

Tritanopia (blue-blind)

#B31836

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #a33437;
/* rgb */ color: rgb(163, 52, 55);
/* oklch */ color: oklch(49.0% 0.146 22.9);

Tailwind

colors: {
  custom: {
    50: '#c5726d',
    500: '#a33437',
    950: '#000000',
  },
}

SCSS

$custom: #a33437;
$custom-light: #c5726d;
$custom-dark: #000000;

JSON

{
  "hex": "#a33437",
  "rgb": {
    "r": 163,
    "g": 52,
    "b": 55
  },
  "hsl": {
    "h": 358.378,
    "s": 51.628,
    "l": 42.157
  },
  "oklch": {
    "l": 0.48976,
    "c": 0.14627,
    "h": 22.9
  },
  "luminance": 0.10518
}

Semantic roles & 50–950 ramp

primary

#A33437

secondary

#75BEBC

accent

#DBD74D

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140807

muted

#837B7A

Preview Lab

Preview with #A33437

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

Preview Lab → · Contrast checker → · Palette generator →