#A33537#A33537

#A33537 is a mid, vivid red. Relative luminance 0.106; OKLCH L 49.1% C 0.145 H 23.2°. Best body text is #FFFFFF at 6.73:1 contrast (WCAG AA passes).

Color values

HEX	#A33537
RGB	rgb(163, 53, 55)
HSL	hsl(359, 51%, 42%)
HSV	hsv(359, 67%, 64%)
CMYK	cmyk(0%, 67.5%, 66.3%, 36.1%)
CIE-LAB	lab(38.92, 45.38, 24.22)
CIE-LCH	lch(38.92, 51.44, 28.09°)
OKLab	oklab(49.09% 0.1334 0.0573)
OKLCH	oklch(49.09% 0.145 23.2)
XYZ	xyz(17.0687, 10.6110, 4.7630)
Luminance	0.1061 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A33537 #35A3A1

analogous

#A3356E #A33537 #A36A35

triadic

#A33537 #37A335 #3537A3

tetradic

#A33537 #6EA335 #35A3A1 #6A35A3

square

#A33537 #6EA335 #35A3A1 #6A35A3

split-complementary

#A33537 #35A36A #356EA3

monochromatic

#471718 #752627 #A33537 #C64F51 #D57E7F

Accessibility & contrast

On white

6.73

#A33537 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#A33537 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A33537

6.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A33537	#FFFFFF	#000000	##FFFFFF
##A33537	1.00	6.73	3.12	6.73
#FFFFFF	6.73	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#524D36

Deuteranopia (green-blind)

#6E6434

Tritanopia (blue-blind)

#B31A37

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #a33537;
/* rgb */ color: rgb(163, 53, 55);
/* oklch */ color: oklch(49.1% 0.145 23.2);

Tailwind

colors: {
  custom: {
    50: '#c5736e',
    500: '#a33537',
    950: '#000000',
  },
}

SCSS

$custom: #a33537;
$custom-light: #c5736e;
$custom-dark: #000000;

JSON

{
  "hex": "#a33537",
  "rgb": {
    "r": 163,
    "g": 53,
    "b": 55
  },
  "hsl": {
    "h": 358.909,
    "s": 50.926,
    "l": 42.353
  },
  "oklch": {
    "l": 0.49093,
    "c": 0.1452,
    "h": 23.2
  },
  "luminance": 0.10609
}

Semantic roles & 50–950 ramp

primary

#A33537

secondary

#76BEBD

accent

#DAD84D

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140807

muted

#837B7A

Preview Lab

Preview with #A33537

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

Preview Lab → · Contrast checker → · Palette generator →