#420A0A#420A0A

#420A0A is a dark, moderate red. Relative luminance 0.014; OKLCH L 25.1% C 0.085 H 25.8°. Best body text is #FFFFFF at 16.41:1 contrast (WCAG AA passes).

Color values

HEX	#420A0A
RGB	rgb(66, 10, 10)
HSL	hsl(0, 74%, 15%)
HSV	hsv(0, 85%, 26%)
CMYK	cmyk(0%, 84.8%, 84.8%, 74.1%)
CIE-LAB	lab(11.94, 26.46, 14.44)
CIE-LCH	lch(11.94, 30.14, 28.62°)
OKLab	oklab(25.11% 0.0765 0.037)
OKLCH	oklch(25.11% 0.085 25.8)
XYZ	xyz(2.4104, 1.3976, 0.4300)
Luminance	0.0140 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#420A0A #0A4242

analogous

#420A26 #420A0A #42260A

triadic

#420A0A #0A420A #0A0A42

tetradic

#420A0A #26420A #0A4242 #260A42

square

#420A0A #26420A #0A4242 #260A42

split-complementary

#420A0A #0A4226 #0A2642

monochromatic

#1B0404 #1B0404 #420A0A #771212 #AC1A1A

Accessibility & contrast

On white

16.41

#420A0A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#420A0A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #420A0A

16.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##420A0A	#FFFFFF	#000000	##FFFFFF
##420A0A	1.00	16.41	1.28	16.41
#FFFFFF	16.41	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B1809

Deuteranopia (green-blind)

#292408

Tritanopia (blue-blind)

#4A000B

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #420a0a;
/* rgb */ color: rgb(66, 10, 10);
/* oklch */ color: oklch(25.1% 0.085 25.8);

Tailwind

colors: {
  custom: {
    50: '#7c4f4b',
    500: '#420a0a',
    950: '#000000',
  },
}

SCSS

$custom: #420a0a;
$custom-light: #7c4f4b;
$custom-dark: #000000;

JSON

{
  "hex": "#420a0a",
  "rgb": {
    "r": 66,
    "g": 10,
    "b": 10
  },
  "hsl": {
    "h": 0,
    "s": 73.684,
    "l": 14.902
  },
  "oklch": {
    "l": 0.25109,
    "c": 0.08502,
    "h": 25.8
  },
  "luminance": 0.01397
}

Semantic roles & 50–950 ramp

primary

#420A0A

secondary

#297F7F

accent

#F0F037

background

#F8F4F4

surface

#EFE7E7

border

#CAC3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #420A0A

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

Preview Lab → · Contrast checker → · Palette generator →