#42171E#42171E

#42171E is a dark, moderate red. Relative luminance 0.019; OKLCH L 27.4% C 0.067 H 12.6°. Best body text is #FFFFFF at 15.29:1 contrast (WCAG AA passes).

Color values

HEX	#42171E
RGB	rgb(66, 23, 30)
HSL	hsl(350, 48%, 17%)
HSV	hsv(350, 65%, 26%)
CMYK	cmyk(0%, 65.2%, 54.5%, 74.1%)
CIE-LAB	lab(14.76, 21.60, 5.73)
CIE-LCH	lch(14.76, 22.34, 14.86°)
OKLab	oklab(27.36% 0.0653 0.0147)
OKLCH	oklch(27.36% 0.067 12.6)
XYZ	xyz(2.7877, 1.8651, 1.4412)
Luminance	0.0186 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42171E #17423B

analogous

#421733 #42171E #422617

triadic

#42171E #1E4217 #171E42

tetradic

#42171E #334217 #17423B #261742

square

#42171E #334217 #17423B #261742

split-complementary

#42171E #174226 #173342

monochromatic

#17080A #17080A #42171E #6F2733 #9D3747

Accessibility & contrast

On white

15.29

#42171E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#42171E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42171E

15.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42171E	#FFFFFF	#000000	##FFFFFF
##42171E	1.00	15.29	1.37	15.29
#FFFFFF	15.29	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#20201E

Deuteranopia (green-blind)

#2B281D

Tritanopia (blue-blind)

#48111A

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #42171e;
/* rgb */ color: rgb(66, 23, 30);
/* oklch */ color: oklch(27.4% 0.067 12.6);

Tailwind

colors: {
  custom: {
    50: '#795659',
    500: '#42171e',
    950: '#000000',
  },
}

SCSS

$custom: #42171e;
$custom-light: #795659;
$custom-dark: #000000;

JSON

{
  "hex": "#42171e",
  "rgb": {
    "r": 66,
    "g": 23,
    "b": 30
  },
  "hsl": {
    "h": 350.233,
    "s": 48.315,
    "l": 17.451
  },
  "oklch": {
    "l": 0.2736,
    "c": 0.06694,
    "h": 12.6
  },
  "luminance": 0.01865
}

Semantic roles & 50–950 ramp

primary

#42171E

secondary

#3C796F

accent

#D8C250

background

#F7F5F5

surface

#EEE9E9

border

#C9C5C5

text

#090303

muted

#7B7878

Preview Lab

Preview with #42171E

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

Preview Lab → · Contrast checker → · Palette generator →