#42171D#42171D

#42171D is a dark, moderate red. Relative luminance 0.019; OKLCH L 27.3% C 0.067 H 14.1°. Best body text is #FFFFFF at 15.31:1 contrast (WCAG AA passes).

Color values

HEX	#42171D
RGB	rgb(66, 23, 29)
HSL	hsl(352, 48%, 17%)
HSV	hsv(352, 65%, 26%)
CMYK	cmyk(0%, 65.2%, 56.1%, 74.1%)
CIE-LAB	lab(14.74, 21.48, 6.42)
CIE-LCH	lch(14.74, 22.42, 16.63°)
OKLab	oklab(27.33% 0.0648 0.0163)
OKLCH	oklch(27.33% 0.067 14.1)
XYZ	xyz(2.7751, 1.8601, 1.3750)
Luminance	0.0186 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42171D #17423C

analogous

#421733 #42171D #422717

triadic

#42171D #1D4217 #171D42

tetradic

#42171D #334217 #17423C #271742

square

#42171D #334217 #17423C #271742

split-complementary

#42171D #174227 #173342

monochromatic

#17080A #17080A #42171D #6F2731 #9D3745

Accessibility & contrast

On white

15.31

#42171D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#42171D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42171D

15.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42171D	#FFFFFF	#000000	##FFFFFF
##42171D	1.00	15.31	1.37	15.31
#FFFFFF	15.31	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#20201D

Deuteranopia (green-blind)

#2B281C

Tritanopia (blue-blind)

#481119

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #42171d;
/* rgb */ color: rgb(66, 23, 29);
/* oklch */ color: oklch(27.3% 0.067 14.1);

Tailwind

colors: {
  custom: {
    50: '#795658',
    500: '#42171d',
    950: '#000000',
  },
}

SCSS

$custom: #42171d;
$custom-light: #795658;
$custom-dark: #000000;

JSON

{
  "hex": "#42171d",
  "rgb": {
    "r": 66,
    "g": 23,
    "b": 29
  },
  "hsl": {
    "h": 351.628,
    "s": 48.315,
    "l": 17.451
  },
  "oklch": {
    "l": 0.2733,
    "c": 0.06686,
    "h": 14.1
  },
  "luminance": 0.0186
}

Semantic roles & 50–950 ramp

primary

#42171D

secondary

#3C7970

accent

#D8C550

background

#F7F5F5

surface

#EEE9E9

border

#C9C5C5

text

#090303

muted

#7B7878

Preview Lab

Preview with #42171D

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

Preview Lab → · Contrast checker → · Palette generator →