#42171F#42171F

#42171F is a dark, moderate red. Relative luminance 0.019; OKLCH L 27.4% C 0.067 H 11.2°. Best body text is #FFFFFF at 15.28:1 contrast (WCAG AA passes).

Color values

HEX	#42171F
RGB	rgb(66, 23, 31)
HSL	hsl(349, 48%, 17%)
HSV	hsv(349, 65%, 26%)
CMYK	cmyk(0%, 65.2%, 53%, 74.1%)
CIE-LAB	lab(14.79, 21.71, 5.04)
CIE-LCH	lch(14.79, 22.29, 13.07°)
OKLab	oklab(27.39% 0.0658 0.013)
OKLCH	oklch(27.39% 0.067 11.2)
XYZ	xyz(2.8007, 1.8703, 1.5096)
Luminance	0.0187 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42171F #17423A

analogous

#421735 #42171F #422417

triadic

#42171F #1F4217 #171F42

tetradic

#42171F #354217 #17423A #241742

square

#42171F #354217 #17423A #241742

split-complementary

#42171F #174224 #173542

monochromatic

#17080B #17080B #42171F #6F2734 #9D374A

Accessibility & contrast

On white

15.28

#42171F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#42171F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42171F

15.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42171F	#FFFFFF	#000000	##FFFFFF
##42171F	1.00	15.28	1.37	15.28
#FFFFFF	15.28	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#20201F

Deuteranopia (green-blind)

#2B281E

Tritanopia (blue-blind)

#48111A

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #42171f;
/* rgb */ color: rgb(66, 23, 31);
/* oklch */ color: oklch(27.4% 0.067 11.2);

Tailwind

colors: {
  custom: {
    50: '#79565a',
    500: '#42171f',
    950: '#000000',
  },
}

SCSS

$custom: #42171f;
$custom-light: #79565a;
$custom-dark: #000000;

JSON

{
  "hex": "#42171f",
  "rgb": {
    "r": 66,
    "g": 23,
    "b": 31
  },
  "hsl": {
    "h": 348.837,
    "s": 48.315,
    "l": 17.451
  },
  "oklch": {
    "l": 0.2739,
    "c": 0.06706,
    "h": 11.2
  },
  "luminance": 0.0187
}

Semantic roles & 50–950 ramp

primary

#42171F

secondary

#3C796E

accent

#D8BF50

background

#F7F5F5

surface

#EEE9E9

border

#C9C5C5

text

#090303

muted

#7B7878

Preview Lab

Preview with #42171F

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

Preview Lab → · Contrast checker → · Palette generator →