#A23737#A23737

#A23737 is a mid, vivid red. Relative luminance 0.107; OKLCH L 49.2% C 0.142 H 23.9°. Best body text is #FFFFFF at 6.69:1 contrast (WCAG AA passes).

Color values

HEX	#A23737
RGB	rgb(162, 55, 55)
HSL	hsl(0, 49%, 43%)
HSV	hsv(0, 66%, 64%)
CMYK	cmyk(0%, 66%, 66%, 36.5%)
CIE-LAB	lab(39.06, 44.17, 24.35)
CIE-LCH	lch(39.06, 50.43, 28.87°)
OKLab	oklab(49.16% 0.1297 0.0576)
OKLCH	oklch(49.16% 0.142 23.9)
XYZ	xyz(16.9578, 10.6920, 4.7845)
Luminance	0.1069 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A23737 #37A2A2

analogous

#A2376C #A23737 #A26C37

triadic

#A23737 #37A237 #3737A2

tetradic

#A23737 #6CA237 #37A2A2 #6C37A2

square

#A23737 #6CA237 #37A2A2 #6C37A2

split-complementary

#A23737 #37A26C #376CA2

monochromatic

#471818 #742727 #A23737 #C45252 #D48080

Accessibility & contrast

On white

6.69

#A23737 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.14

#A23737 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A23737

6.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A23737	#FFFFFF	#000000	##FFFFFF
##A23737	1.00	6.69	3.14	6.69
#FFFFFF	6.69	1.00	21.00	1.00
#000000	3.14	21.00	1.00	21.00
##FFFFFF	6.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#534E36

Deuteranopia (green-blind)

#6E6434

Tritanopia (blue-blind)

#B21E38

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #a23737;
/* rgb */ color: rgb(162, 55, 55);
/* oklch */ color: oklch(49.2% 0.142 23.9);

Tailwind

colors: {
  custom: {
    50: '#c4746e',
    500: '#a23737',
    950: '#000000',
  },
}

SCSS

$custom: #a23737;
$custom-light: #c4746e;
$custom-dark: #000000;

JSON

{
  "hex": "#a23737",
  "rgb": {
    "r": 162,
    "g": 55,
    "b": 55
  },
  "hsl": {
    "h": 0,
    "s": 49.309,
    "l": 42.549
  },
  "oklch": {
    "l": 0.49163,
    "c": 0.14194,
    "h": 23.9
  },
  "luminance": 0.1069
}

Semantic roles & 50–950 ramp

primary

#A23737

secondary

#78BDBD

accent

#D9D94F

background

#FCF7F6

surface

#F9EDEB

border

#D2C8C6

text

#140807

muted

#827B7A

Preview Lab

Preview with #A23737

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

Preview Lab → · Contrast checker → · Palette generator →