#A3373C#A3373C

#A3373C is a mid, vivid red. Relative luminance 0.108; OKLCH L 49.4% C 0.143 H 21.4°. Best body text is #FFFFFF at 6.63:1 contrast (WCAG AA passes).

Color values

HEX	#A3373C
RGB	rgb(163, 55, 60)
HSL	hsl(357, 50%, 43%)
HSV	hsv(357, 66%, 64%)
CMYK	cmyk(0%, 66.3%, 63.2%, 36.1%)
CIE-LAB	lab(39.32, 44.83, 21.64)
CIE-LCH	lch(39.32, 49.78, 25.77°)
OKLab	oklab(49.42% 0.1327 0.052)
OKLCH	oklch(49.42% 0.143 21.4)
XYZ	xyz(17.2877, 10.8475, 5.4575)
Luminance	0.1085 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A3373C #37A39E

analogous

#A33772 #A3373C #A36837

triadic

#A3373C #3CA337 #373CA3

tetradic

#A3373C #72A337 #37A39E #6837A3

square

#A3373C #72A337 #37A39E #6837A3

split-complementary

#A3373C #37A368 #3772A3

monochromatic

#47181A #75282B #A3373C #C55258 #D48084

Accessibility & contrast

On white

6.63

#A3373C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.17

#A3373C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A3373C

6.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A3373C	#FFFFFF	#000000	##FFFFFF
##A3373C	1.00	6.63	3.17	6.63
#FFFFFF	6.63	1.00	21.00	1.00
#000000	3.17	21.00	1.00	21.00
##FFFFFF	6.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#534E3B

Deuteranopia (green-blind)

#6E6539

Tritanopia (blue-blind)

#B31F3A

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #a3373c;
/* rgb */ color: rgb(163, 55, 60);
/* oklch */ color: oklch(49.4% 0.143 21.4);

Tailwind

colors: {
  custom: {
    50: '#c57471',
    500: '#a3373c',
    950: '#000000',
  },
}

SCSS

$custom: #a3373c;
$custom-light: #c57471;
$custom-dark: #000000;

JSON

{
  "hex": "#a3373c",
  "rgb": {
    "r": 163,
    "g": 55,
    "b": 60
  },
  "hsl": {
    "h": 357.222,
    "s": 49.541,
    "l": 42.745
  },
  "oklch": {
    "l": 0.49424,
    "c": 0.14253,
    "h": 21.4
  },
  "luminance": 0.10845
}

Semantic roles & 50–950 ramp

primary

#A3373C

secondary

#78BEBA

accent

#D9D34F

background

#FCF7F6

surface

#F9EDEC

border

#D2C8C7

text

#140907

muted

#827B7A

Preview Lab

Preview with #A3373C

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

Preview Lab → · Contrast checker → · Palette generator →