#A43731#A43731

#A43731 is a mid, vivid red. Relative luminance 0.108; OKLCH L 49.4% C 0.145 H 26.9°. Best body text is #FFFFFF at 6.63:1 contrast (WCAG AA passes).

Color values

HEX	#A43731
RGB	rgb(164, 55, 49)
HSL	hsl(3, 54%, 42%)
HSV	hsv(3, 70%, 64%)
CMYK	cmyk(0%, 66.5%, 70.1%, 35.7%)
CIE-LAB	lab(39.33, 44.52, 28.40)
CIE-LCH	lch(39.33, 52.81, 32.53°)
OKLab	oklab(49.4% 0.1294 0.0656)
OKLCH	oklch(49.4% 0.145 26.9)
XYZ	xyz(17.2322, 10.8491, 4.0918)
Luminance	0.1085 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A43731 #319EA4

analogous

#A43165 #A43731 #A47131

triadic

#A43731 #31A437 #3731A4

tetradic

#A43731 #65A431 #319EA4 #7131A4

square

#A43731 #65A431 #319EA4 #7131A4

split-complementary

#A43731 #31A471 #3165A4

monochromatic

#461715 #752723 #A43731 #C95049 #D77D79

Accessibility & contrast

On white

6.63

#A43731 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.17

#A43731 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A43731

6.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A43731	#FFFFFF	#000000	##FFFFFF
##A43731	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)

#554E30

Deuteranopia (green-blind)

#70652E

Tritanopia (blue-blind)

#B41B36

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #a43731;
/* rgb */ color: rgb(164, 55, 49);
/* oklch */ color: oklch(49.4% 0.145 26.9);

Tailwind

colors: {
  custom: {
    50: '#c67469',
    500: '#a43731',
    950: '#000000',
  },
}

SCSS

$custom: #a43731;
$custom-light: #c67469;
$custom-dark: #000000;

JSON

{
  "hex": "#a43731",
  "rgb": {
    "r": 164,
    "g": 55,
    "b": 49
  },
  "hsl": {
    "h": 3.13,
    "s": 53.991,
    "l": 41.765
  },
  "oklch": {
    "l": 0.49402,
    "c": 0.14505,
    "h": 26.9
  },
  "luminance": 0.10847
}

Semantic roles & 50–950 ramp

primary

#A43731

secondary

#72BBBF

accent

#D6DD4A

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140806

muted

#837B7A

Preview Lab

Preview with #A43731

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

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