#A3373F#A3373F

#A3373F is a mid, vivid red. Relative luminance 0.109; OKLCH L 49.5% C 0.142 H 19.8°. Best body text is #FFFFFF at 6.61:1 contrast (WCAG AA passes).

Color values

HEX	#A3373F
RGB	rgb(163, 55, 63)
HSL	hsl(356, 50%, 43%)
HSV	hsv(356, 66%, 64%)
CMYK	cmyk(0%, 66.3%, 61.3%, 36.1%)
CIE-LAB	lab(39.38, 45.04, 19.85)
CIE-LCH	lch(39.38, 49.22, 23.79°)
OKLab	oklab(49.48% 0.1339 0.0482)
OKLCH	oklch(49.48% 0.142 19.8)
XYZ	xyz(17.3693, 10.8802, 5.8871)
Luminance	0.1088 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A3373F #37A39B

analogous

#A33775 #A3373F #A36537

triadic

#A3373F #3FA337 #373FA3

tetradic

#A3373F #75A337 #37A39B #6537A3

square

#A3373F #75A337 #37A39B #6537A3

split-complementary

#A3373F #37A365 #3775A3

monochromatic

#47181C #75282D #A3373F #C5525B #D48086

Accessibility & contrast

On white

6.61

#A3373F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.18

#A3373F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A3373F

6.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A3373F	#FFFFFF	#000000	##FFFFFF
##A3373F	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)

#534E3F

Deuteranopia (green-blind)

#6E653C

Tritanopia (blue-blind)

#B3203B

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #a3373f;
/* rgb */ color: rgb(163, 55, 63);
/* oklch */ color: oklch(49.5% 0.142 19.8);

Tailwind

colors: {
  custom: {
    50: '#c47474',
    500: '#a3373f',
    950: '#000000',
  },
}

SCSS

$custom: #a3373f;
$custom-light: #c47474;
$custom-dark: #000000;

JSON

{
  "hex": "#a3373f",
  "rgb": {
    "r": 163,
    "g": 55,
    "b": 63
  },
  "hsl": {
    "h": 355.556,
    "s": 49.541,
    "l": 42.745
  },
  "oklch": {
    "l": 0.49483,
    "c": 0.14231,
    "h": 19.8
  },
  "luminance": 0.10878
}

Semantic roles & 50–950 ramp

primary

#A3373F

secondary

#78BEB8

accent

#D9CF4F

background

#FCF7F7

surface

#F9EDED

border

#D2C8C8

text

#140908

muted

#827B7B

Preview Lab

Preview with #A3373F

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

Preview Lab → · Contrast checker → · Palette generator →