#420B0B#420B0B

#420B0B is a dark, moderate red. Relative luminance 0.014; OKLCH L 25.2% C 0.084 H 25.6°. Best body text is #FFFFFF at 16.35:1 contrast (WCAG AA passes).

Color values

HEX	#420B0B
RGB	rgb(66, 11, 11)
HSL	hsl(0, 71%, 15%)
HSV	hsv(0, 83%, 26%)
CMYK	cmyk(0%, 83.3%, 83.3%, 74.1%)
CIE-LAB	lab(12.10, 26.10, 14.24)
CIE-LCH	lch(12.10, 29.73, 28.62°)
OKLab	oklab(25.24% 0.0757 0.0362)
OKLCH	oklch(25.24% 0.084 25.6)
XYZ	xyz(2.4271, 1.4221, 0.4632)
Luminance	0.0142 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#420B0B #0B4242

analogous

#420B26 #420B0B #42260B

triadic

#420B0B #0B420B #0B0B42

tetradic

#420B0B #26420B #0B4242 #260B42

square

#420B0B #26420B #0B4242 #260B42

split-complementary

#420B0B #0B4226 #0B2642

monochromatic

#1A0404 #1A0404 #420B0B #761414 #AB1C1C

Accessibility & contrast

On white

16.35

#420B0B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#420B0B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #420B0B

16.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##420B0B	#FFFFFF	#000000	##FFFFFF
##420B0B	1.00	16.35	1.28	16.35
#FFFFFF	16.35	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B180A

Deuteranopia (green-blind)

#292409

Tritanopia (blue-blind)

#49000C

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #420b0b;
/* rgb */ color: rgb(66, 11, 11);
/* oklch */ color: oklch(25.2% 0.084 25.6);

Tailwind

colors: {
  custom: {
    50: '#7c4f4b',
    500: '#420b0b',
    950: '#000000',
  },
}

SCSS

$custom: #420b0b;
$custom-light: #7c4f4b;
$custom-dark: #000000;

JSON

{
  "hex": "#420b0b",
  "rgb": {
    "r": 66,
    "g": 11,
    "b": 11
  },
  "hsl": {
    "h": 0,
    "s": 71.429,
    "l": 15.098
  },
  "oklch": {
    "l": 0.25235,
    "c": 0.08386,
    "h": 25.6
  },
  "luminance": 0.01422
}

Semantic roles & 50–950 ramp

primary

#420B0B

secondary

#2A7F7F

accent

#EEEE3A

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #420B0B

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

Preview Lab → · Contrast checker → · Palette generator →