#A33740#A33740

#A33740 is a mid, vivid red. Relative luminance 0.109; OKLCH L 49.5% C 0.142 H 19.2°. Best body text is #FFFFFF at 6.61:1 contrast (WCAG AA passes).

Color values

HEX	#A33740
RGB	rgb(163, 55, 64)
HSL	hsl(355, 50%, 43%)
HSV	hsv(355, 66%, 64%)
CMYK	cmyk(0%, 66.3%, 60.7%, 36.1%)
CIE-LAB	lab(39.40, 45.11, 19.25)
CIE-LCH	lch(39.40, 49.05, 23.11°)
OKLab	oklab(49.5% 0.1343 0.0469)
OKLCH	oklch(49.5% 0.142 19.2)
XYZ	xyz(17.3975, 10.8914, 6.0356)
Luminance	0.1089 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A33740 #37A39A

analogous

#A33776 #A33740 #A36437

triadic

#A33740 #40A337 #3740A3

tetradic

#A33740 #76A337 #37A39A #6437A3

square

#A33740 #76A337 #37A39A #6437A3

split-complementary

#A33740 #37A364 #3776A3

monochromatic

#47181C #75282E #A33740 #C5525C #D48087

Accessibility & contrast

On white

6.61

#A33740 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.18

#A33740 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A33740

6.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A33740	#FFFFFF	#000000	##FFFFFF
##A33740	1.00	6.61	3.18	6.61
#FFFFFF	6.61	1.00	21.00	1.00
#000000	3.18	21.00	1.00	21.00
##FFFFFF	6.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#534E40

Deuteranopia (green-blind)

#6E653D

Tritanopia (blue-blind)

#B2203B

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #a33740;
/* rgb */ color: rgb(163, 55, 64);
/* oklch */ color: oklch(49.5% 0.142 19.2);

Tailwind

colors: {
  custom: {
    50: '#c47474',
    500: '#a33740',
    950: '#000000',
  },
}

SCSS

$custom: #a33740;
$custom-light: #c47474;
$custom-dark: #000000;

JSON

{
  "hex": "#a33740",
  "rgb": {
    "r": 163,
    "g": 55,
    "b": 64
  },
  "hsl": {
    "h": 355,
    "s": 49.541,
    "l": 42.745
  },
  "oklch": {
    "l": 0.49504,
    "c": 0.14227,
    "h": 19.2
  },
  "luminance": 0.10889
}

Semantic roles & 50–950 ramp

primary

#A33740

secondary

#78BEB8

accent

#D9CE4F

background

#FCF7F7

surface

#F9EDED

border

#D2C8C8

text

#140908

muted

#827B7B

Preview Lab

Preview with #A33740

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

Preview Lab → · Contrast checker → · Palette generator →