#A33E37#A33E37

#A33E37 is a mid, vivid red. Relative luminance 0.115; OKLCH L 50.2% C 0.135 H 27.0°. Best body text is #FFFFFF at 6.36:1 contrast (WCAG AA passes).

Color values

HEX	#A33E37
RGB	rgb(163, 62, 55)
HSL	hsl(4, 50%, 43%)
HSV	hsv(4, 66%, 64%)
CMYK	cmyk(0%, 62%, 66.3%, 36.1%)
CIE-LAB	lab(40.43, 41.33, 26.09)
CIE-LCH	lch(40.43, 48.87, 32.26°)
OKLab	oklab(50.23% 0.1207 0.0615)
OKLCH	oklch(50.23% 0.135 27)
XYZ	xyz(17.5182, 11.5100, 4.9129)
Luminance	0.1151 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A33E37 #379CA3

analogous

#A33766 #A33E37 #A37437

triadic

#A33E37 #37A33E #3E37A3

tetradic

#A33E37 #66A337 #379CA3 #7437A3

square

#A33E37 #66A337 #379CA3 #7437A3

split-complementary

#A33E37 #37A374 #3766A3

monochromatic

#471B18 #752D28 #A33E37 #C55A52 #D48680

Accessibility & contrast

On white

6.36

#A33E37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#A33E37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A33E37

6.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A33E37	#FFFFFF	#000000	##FFFFFF
##A33E37	1.00	6.36	3.30	6.36
#FFFFFF	6.36	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#585236

Deuteranopia (green-blind)

#726734

Tritanopia (blue-blind)

#B3293D

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a33e37;
/* rgb */ color: rgb(163, 62, 55);
/* oklch */ color: oklch(50.2% 0.135 27.0);

Tailwind

colors: {
  custom: {
    50: '#c5786e',
    500: '#a33e37',
    950: '#000000',
  },
}

SCSS

$custom: #a33e37;
$custom-light: #c5786e;
$custom-dark: #000000;

JSON

{
  "hex": "#a33e37",
  "rgb": {
    "r": 163,
    "g": 62,
    "b": 55
  },
  "hsl": {
    "h": 3.889,
    "s": 49.541,
    "l": 42.745
  },
  "oklch": {
    "l": 0.50226,
    "c": 0.13541,
    "h": 27
  },
  "luminance": 0.11508
}

Semantic roles & 50–950 ramp

primary

#A33E37

secondary

#78B9BE

accent

#D0D94F

background

#FCF7F6

surface

#F9EDEB

border

#D2C8C6

text

#140907

muted

#827B7A

Preview Lab

Preview with #A33E37

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

Preview Lab → · Contrast checker → · Palette generator →