#420B0A#420B0A

#420B0A is a dark, moderate red. Relative luminance 0.014; OKLCH L 25.2% C 0.084 H 26.4°. Best body text is #FFFFFF at 16.36:1 contrast (WCAG AA passes).

Color values

HEX	#420B0A
RGB	rgb(66, 11, 10)
HSL	hsl(1, 74%, 15%)
HSV	hsv(1, 85%, 26%)
CMYK	cmyk(0%, 83.3%, 84.8%, 74.1%)
CIE-LAB	lab(12.09, 26.05, 14.64)
CIE-LCH	lch(12.09, 29.88, 29.34°)
OKLab	oklab(25.22% 0.0752 0.0374)
OKLCH	oklch(25.22% 0.084 26.4)
XYZ	xyz(2.4215, 1.4199, 0.4337)
Luminance	0.0142 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#420B0A #0A4142

analogous

#420A25 #420B0A #42270A

triadic

#420B0A #0A420B #0B0A42

tetradic

#420B0A #25420A #0A4142 #270A42

square

#420B0A #25420A #0A4142 #270A42

split-complementary

#420B0A #0A4227 #0A2542

monochromatic

#1B0404 #1B0404 #420B0A #771412 #AC1D1A

Accessibility & contrast

On white

16.36

#420B0A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#420B0A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #420B0A

16.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##420B0A	#FFFFFF	#000000	##FFFFFF
##420B0A	1.00	16.36	1.28	16.36
#FFFFFF	16.36	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B1809

Deuteranopia (green-blind)

#292408

Tritanopia (blue-blind)

#4A000B

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #420b0a;
/* rgb */ color: rgb(66, 11, 10);
/* oklch */ color: oklch(25.2% 0.084 26.4);

Tailwind

colors: {
  custom: {
    50: '#7c4f4b',
    500: '#420b0a',
    950: '#000000',
  },
}

SCSS

$custom: #420b0a;
$custom-light: #7c4f4b;
$custom-dark: #000000;

JSON

{
  "hex": "#420b0a",
  "rgb": {
    "r": 66,
    "g": 11,
    "b": 10
  },
  "hsl": {
    "h": 1.071,
    "s": 73.684,
    "l": 14.902
  },
  "oklch": {
    "l": 0.25219,
    "c": 0.08401,
    "h": 26.4
  },
  "luminance": 0.0142
}

Semantic roles & 50–950 ramp

primary

#420B0A

secondary

#297E7F

accent

#EDF037

background

#F8F4F4

surface

#EFE7E7

border

#CAC3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #420B0A

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

Preview Lab → · Contrast checker → · Palette generator →