#423638#423638

#423638 is a dark, near-neutral red. Relative luminance 0.041; OKLCH L 34.6% C 0.017 H 6.7°. Best body text is #FFFFFF at 11.56:1 contrast (WCAG AA passes).

Color values

HEX	#423638
RGB	rgb(66, 54, 56)
HSL	hsl(350, 10%, 24%)
HSV	hsv(350, 18%, 26%)
CMYK	cmyk(0%, 18.2%, 15.2%, 74.1%)
CIE-LAB	lab(23.94, 5.72, 0.74)
CIE-LCH	lch(23.94, 5.77, 7.37°)
OKLab	oklab(34.65% 0.0173 0.002)
OKLCH	oklch(34.65% 0.017 6.7)
XYZ	xyz(4.2797, 4.0822, 4.3031)
Luminance	0.0408 (WCAG relative)
Temperature	neutral
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423638 #364240

analogous

#42363E #423638 #423A36

triadic

#423638 #384236 #363842

tetradic

#423638 #3E4236 #364240 #3A3642

square

#423638 #3E4236 #364240 #3A3642

split-complementary

#423638 #36423A #363E42

monochromatic

#110E0E #201A1B #423638 #645255 #856D71

Accessibility & contrast

On white

11.56

#423638 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#423638 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423638

11.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423638	#FFFFFF	#000000	##FFFFFF
##423638	1.00	11.56	1.82	11.56
#FFFFFF	11.56	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#383838

Deuteranopia (green-blind)

#3A3A38

Tritanopia (blue-blind)

#443537

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #423638;
/* rgb */ color: rgb(66, 54, 56);
/* oklch */ color: oklch(34.6% 0.017 6.7);

Tailwind

colors: {
  custom: {
    50: '#766d6e',
    500: '#423638',
    950: '#000000',
  },
}

SCSS

$custom: #423638;
$custom-light: #766d6e;
$custom-dark: #000000;

JSON

{
  "hex": "#423638",
  "rgb": {
    "r": 66,
    "g": 54,
    "b": 56
  },
  "hsl": {
    "h": 350,
    "s": 10,
    "l": 23.529
  },
  "oklch": {
    "l": 0.3465,
    "c": 0.01737,
    "h": 6.7
  },
  "luminance": 0.04082
}

Semantic roles & 50–950 ramp

primary

#423638

secondary

#62716F

accent

#B3A975

background

#F7F6F6

surface

#EDEBEB

border

#C8C6C6

text

#080707

muted

#7B7A7A

Preview Lab

Preview with #423638

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

Preview Lab → · Contrast checker → · Palette generator →