#A23739#A23739

#A23739 is a mid, vivid red. Relative luminance 0.107; OKLCH L 49.2% C 0.142 H 22.9°. Best body text is #FFFFFF at 6.68:1 contrast (WCAG AA passes).

Color values

HEX	#A23739
RGB	rgb(162, 55, 57)
HSL	hsl(359, 49%, 43%)
HSV	hsv(359, 66%, 64%)
CMYK	cmyk(0%, 66%, 64.8%, 36.5%)
CIE-LAB	lab(39.09, 44.29, 23.16)
CIE-LCH	lch(39.09, 49.98, 27.61°)
OKLab	oklab(49.2% 0.1305 0.0552)
OKLCH	oklch(49.2% 0.142 22.9)
XYZ	xyz(17.0067, 10.7115, 5.0421)
Luminance	0.1071 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A23739 #37A2A0

analogous

#A2376E #A23739 #A26B37

triadic

#A23739 #39A237 #3739A2

tetradic

#A23739 #6EA237 #37A2A0 #6B37A2

square

#A23739 #6EA237 #37A2A0 #6B37A2

split-complementary

#A23739 #37A26B #376EA2

monochromatic

#471819 #742729 #A23739 #C45254 #D48081

Accessibility & contrast

On white

6.68

#A23739 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.14

#A23739 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A23739

6.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A23739	#FFFFFF	#000000	##FFFFFF
##A23739	1.00	6.68	3.14	6.68
#FFFFFF	6.68	1.00	21.00	1.00
#000000	3.14	21.00	1.00	21.00
##FFFFFF	6.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#534E38

Deuteranopia (green-blind)

#6E6536

Tritanopia (blue-blind)

#B21E39

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #a23739;
/* rgb */ color: rgb(162, 55, 57);
/* oklch */ color: oklch(49.2% 0.142 22.9);

Tailwind

colors: {
  custom: {
    50: '#c4746f',
    500: '#a23739',
    950: '#000000',
  },
}

SCSS

$custom: #a23739;
$custom-light: #c4746f;
$custom-dark: #000000;

JSON

{
  "hex": "#a23739",
  "rgb": {
    "r": 162,
    "g": 55,
    "b": 57
  },
  "hsl": {
    "h": 358.879,
    "s": 49.309,
    "l": 42.549
  },
  "oklch": {
    "l": 0.49199,
    "c": 0.1417,
    "h": 22.9
  },
  "luminance": 0.10709
}

Semantic roles & 50–950 ramp

primary

#A23739

secondary

#78BDBC

accent

#D9D64F

background

#FCF7F6

surface

#F9EDEC

border

#D2C8C7

text

#140807

muted

#827B7A

Preview Lab

Preview with #A23739

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

Preview Lab → · Contrast checker → · Palette generator →