#420D0B#420D0B

#420D0B is a dark, moderate red. Relative luminance 0.015; OKLCH L 25.5% C 0.082 H 26.9°. Best body text is #FFFFFF at 16.23:1 contrast (WCAG AA passes).

Color values

HEX	#420D0B
RGB	rgb(66, 13, 11)
HSL	hsl(2, 71%, 15%)
HSV	hsv(2, 83%, 26%)
CMYK	cmyk(0%, 80.3%, 83.3%, 74.1%)
CIE-LAB	lab(12.42, 25.23, 14.67)
CIE-LCH	lch(12.42, 29.18, 30.18°)
OKLab	oklab(25.47% 0.0729 0.037)
OKLCH	oklch(25.47% 0.082 26.9)
XYZ	xyz(2.4514, 1.4706, 0.4713)
Luminance	0.0147 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#420D0B #0B4042

analogous

#420B24 #420D0B #42290B

triadic

#420D0B #0B420D #0D0B42

tetradic

#420D0B #24420B #0B4042 #290B42

square

#420D0B #24420B #0B4042 #290B42

split-complementary

#420D0B #0B4229 #0B2442

monochromatic

#1A0504 #1A0504 #420D0B #761714 #AB221C

Accessibility & contrast

On white

16.23

#420D0B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#420D0B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #420D0B

16.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##420D0B	#FFFFFF	#000000	##FFFFFF
##420D0B	1.00	16.23	1.29	16.23
#FFFFFF	16.23	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C190A

Deuteranopia (green-blind)

#2A2509

Tritanopia (blue-blind)

#49000D

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #420d0b;
/* rgb */ color: rgb(66, 13, 11);
/* oklch */ color: oklch(25.5% 0.082 26.9);

Tailwind

colors: {
  custom: {
    50: '#7b504b',
    500: '#420d0b',
    950: '#000000',
  },
}

SCSS

$custom: #420d0b;
$custom-light: #7b504b;
$custom-dark: #000000;

JSON

{
  "hex": "#420d0b",
  "rgb": {
    "r": 66,
    "g": 13,
    "b": 11
  },
  "hsl": {
    "h": 2.182,
    "s": 71.429,
    "l": 15.098
  },
  "oklch": {
    "l": 0.25471,
    "c": 0.08173,
    "h": 26.9
  },
  "luminance": 0.0147
}

Semantic roles & 50–950 ramp

primary

#420D0B

secondary

#2A7C7F

accent

#E8EE3A

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #420D0B

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

Preview Lab → · Contrast checker → · Palette generator →