#42121C#42121C

#42121C is a dark, moderate red. Relative luminance 0.017; OKLCH L 26.5% C 0.074 H 11.2°. Best body text is #FFFFFF at 15.73:1 contrast (WCAG AA passes).

Color values

HEX	#42121C
RGB	rgb(66, 18, 28)
HSL	hsl(348, 57%, 16%)
HSV	hsv(348, 73%, 26%)
CMYK	cmyk(0%, 72.7%, 57.6%, 74.1%)
CIE-LAB	lab(13.68, 24.12, 5.69)
CIE-LCH	lch(13.68, 24.78, 13.27°)
OKLab	oklab(26.53% 0.073 0.0145)
OKLCH	oklch(26.53% 0.074 11.2)
XYZ	xyz(2.6729, 1.6750, 1.2809)
Luminance	0.0168 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42121C #124238

analogous

#421234 #42121C #422012

triadic

#42121C #1C4212 #121C42

tetradic

#42121C #344212 #124238 #201242

square

#42121C #344212 #124238 #201242

split-complementary

#42121C #124220 #123442

monochromatic

#18070A #18070A #42121C #721F30 #A22C45

Accessibility & contrast

On white

15.73

#42121C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#42121C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42121C

15.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42121C	#FFFFFF	#000000	##FFFFFF
##42121C	1.00	15.73	1.34	15.73
#FFFFFF	15.73	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D1D1C

Deuteranopia (green-blind)

#29271B

Tritanopia (blue-blind)

#490A16

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #42121c;
/* rgb */ color: rgb(66, 18, 28);
/* oklch */ color: oklch(26.5% 0.074 11.2);

Tailwind

colors: {
  custom: {
    50: '#7a5357',
    500: '#42121c',
    950: '#000000',
  },
}

SCSS

$custom: #42121c;
$custom-light: #7a5357;
$custom-dark: #000000;

JSON

{
  "hex": "#42121c",
  "rgb": {
    "r": 66,
    "g": 18,
    "b": 28
  },
  "hsl": {
    "h": 347.5,
    "s": 57.143,
    "l": 16.471
  },
  "oklch": {
    "l": 0.26531,
    "c": 0.07447,
    "h": 11.2
  },
  "luminance": 0.01675
}

Semantic roles & 50–950 ramp

primary

#42121C

secondary

#357B6C

accent

#E0C147

background

#F7F4F5

surface

#EEE7E9

border

#C9C3C5

text

#0A0203

muted

#7C7878

Preview Lab

Preview with #42121C

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

Preview Lab → · Contrast checker → · Palette generator →