#A43738#A43738

#A43738 is a mid, vivid red. Relative luminance 0.109; OKLCH L 49.5% C 0.144 H 23.5°. Best body text is #FFFFFF at 6.60:1 contrast (WCAG AA passes).

Color values

HEX	#A43738
RGB	rgb(164, 55, 56)
HSL	hsl(359, 50%, 43%)
HSV	hsv(359, 66%, 64%)
CMYK	cmyk(0%, 66.5%, 65.9%, 35.7%)
CIE-LAB	lab(39.43, 44.92, 24.28)
CIE-LCH	lch(39.43, 51.07, 28.39°)
OKLab	oklab(49.52% 0.1321 0.0575)
OKLCH	oklch(49.52% 0.144 23.5)
XYZ	xyz(17.3916, 10.9128, 4.9312)
Luminance	0.1091 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A43738 #37A4A3

analogous

#A4376E #A43738 #A46D37

triadic

#A43738 #38A437 #3738A4

tetradic

#A43738 #6EA437 #37A4A3 #6D37A4

square

#A43738 #6EA437 #37A4A3 #6D37A4

split-complementary

#A43738 #37A46D #376EA4

monochromatic

#481819 #762828 #A43738 #C55354 #D58182

Accessibility & contrast

On white

6.60

#A43738 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.18

#A43738 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A43738

6.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A43738	#FFFFFF	#000000	##FFFFFF
##A43738	1.00	6.60	3.18	6.60
#FFFFFF	6.60	1.00	21.00	1.00
#000000	3.18	21.00	1.00	21.00
##FFFFFF	6.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#544E37

Deuteranopia (green-blind)

#6F6635

Tritanopia (blue-blind)

#B41D38

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #a43738;
/* rgb */ color: rgb(164, 55, 56);
/* oklch */ color: oklch(49.5% 0.144 23.5);

Tailwind

colors: {
  custom: {
    50: '#c6746e',
    500: '#a43738',
    950: '#000000',
  },
}

SCSS

$custom: #a43738;
$custom-light: #c6746e;
$custom-dark: #000000;

JSON

{
  "hex": "#a43738",
  "rgb": {
    "r": 164,
    "g": 55,
    "b": 56
  },
  "hsl": {
    "h": 359.45,
    "s": 49.772,
    "l": 42.941
  },
  "oklch": {
    "l": 0.49518,
    "c": 0.14405,
    "h": 23.5
  },
  "luminance": 0.1091
}

Semantic roles & 50–950 ramp

primary

#A43738

secondary

#79BEBD

accent

#D9D84F

background

#FDF7F6

surface

#FAEDEC

border

#D3C8C7

text

#140907

muted

#837B7A

Preview Lab

Preview with #A43738

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

Preview Lab → · Contrast checker → · Palette generator →