#A43739#A43739

#A43739 is a mid, vivid red. Relative luminance 0.109; OKLCH L 49.5% C 0.144 H 23.0°. Best body text is #FFFFFF at 6.60:1 contrast (WCAG AA passes).

Color values

HEX	#A43739
RGB	rgb(164, 55, 57)
HSL	hsl(359, 50%, 43%)
HSV	hsv(359, 66%, 64%)
CMYK	cmyk(0%, 66.5%, 65.2%, 35.7%)
CIE-LAB	lab(39.45, 44.99, 23.69)
CIE-LCH	lch(39.45, 50.84, 27.77°)
OKLab	oklab(49.54% 0.1325 0.0563)
OKLCH	oklch(49.54% 0.144 23)
XYZ	xyz(17.4163, 10.9227, 5.0613)
Luminance	0.1092 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A43739 #37A4A2

analogous

#A4376F #A43739 #A46B37

triadic

#A43739 #39A437 #3739A4

tetradic

#A43739 #6FA437 #37A4A2 #6B37A4

square

#A43739 #6FA437 #37A4A2 #6B37A4

split-complementary

#A43739 #37A46B #376FA4

monochromatic

#481819 #762829 #A43739 #C55355 #D58182

Accessibility & contrast

On white

6.60

#A43739 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.18

#A43739 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A43739

6.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A43739	#FFFFFF	#000000	##FFFFFF
##A43739	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)

#544E38

Deuteranopia (green-blind)

#6F6636

Tritanopia (blue-blind)

#B41D39

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #a43739;
/* rgb */ color: rgb(164, 55, 57);
/* oklch */ color: oklch(49.5% 0.144 23.0);

Tailwind

colors: {
  custom: {
    50: '#c6746f',
    500: '#a43739',
    950: '#000000',
  },
}

SCSS

$custom: #a43739;
$custom-light: #c6746f;
$custom-dark: #000000;

JSON

{
  "hex": "#a43739",
  "rgb": {
    "r": 164,
    "g": 55,
    "b": 57
  },
  "hsl": {
    "h": 358.899,
    "s": 49.772,
    "l": 42.941
  },
  "oklch": {
    "l": 0.49536,
    "c": 0.14393,
    "h": 23
  },
  "luminance": 0.1092
}

Semantic roles & 50–950 ramp

primary

#A43739

secondary

#79BEBD

accent

#D9D74F

background

#FDF7F6

surface

#FAEDEC

border

#D3C8C7

text

#140907

muted

#837B7A

Preview Lab

Preview with #A43739

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

Preview Lab → · Contrast checker → · Palette generator →