#42121B#42121B

#42121B is a dark, moderate red. Relative luminance 0.017; OKLCH L 26.5% C 0.074 H 12.6°. Best body text is #FFFFFF at 15.74:1 contrast (WCAG AA passes).

Color values

HEX	#42121B
RGB	rgb(66, 18, 27)
HSL	hsl(349, 57%, 16%)
HSV	hsv(349, 73%, 26%)
CMYK	cmyk(0%, 72.7%, 59.1%, 74.1%)
CIE-LAB	lab(13.65, 24.01, 6.38)
CIE-LCH	lch(13.65, 24.85, 14.88°)
OKLab	oklab(26.5% 0.0726 0.0162)
OKLCH	oklch(26.5% 0.074 12.6)
XYZ	xyz(2.6611, 1.6703, 1.2190)
Luminance	0.0167 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42121B #124239

analogous

#421233 #42121B #422112

triadic

#42121B #1B4212 #121B42

tetradic

#42121B #334212 #124239 #211242

square

#42121B #334212 #124239 #211242

split-complementary

#42121B #124221 #123342

monochromatic

#18070A #18070A #42121B #721F2F #A22C42

Accessibility & contrast

On white

15.74

#42121B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#42121B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42121B

15.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42121B	#FFFFFF	#000000	##FFFFFF
##42121B	1.00	15.74	1.33	15.74
#FFFFFF	15.74	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D1D1B

Deuteranopia (green-blind)

#2A271A

Tritanopia (blue-blind)

#490A16

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #42121b;
/* rgb */ color: rgb(66, 18, 27);
/* oklch */ color: oklch(26.5% 0.074 12.6);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#42121b",
  "rgb": {
    "r": 66,
    "g": 18,
    "b": 27
  },
  "hsl": {
    "h": 348.75,
    "s": 57.143,
    "l": 16.471
  },
  "oklch": {
    "l": 0.26501,
    "c": 0.07435,
    "h": 12.6
  },
  "luminance": 0.0167
}

Semantic roles & 50–950 ramp

primary

#42121B

secondary

#357B6E

accent

#E0C447

background

#F7F4F5

surface

#EEE7E9

border

#C9C3C5

text

#0A0203

muted

#7C7878

Preview Lab

Preview with #42121B

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

Preview Lab → · Contrast checker → · Palette generator →