#420A0B#420A0B

#420A0B is a dark, moderate red. Relative luminance 0.014; OKLCH L 25.1% C 0.085 H 25.0°. Best body text is #FFFFFF at 16.41:1 contrast (WCAG AA passes).

Color values

HEX	#420A0B
RGB	rgb(66, 10, 11)
HSL	hsl(359, 74%, 15%)
HSV	hsv(359, 85%, 26%)
CMYK	cmyk(0%, 84.8%, 83.3%, 74.1%)
CIE-LAB	lab(11.96, 26.51, 14.04)
CIE-LCH	lch(11.96, 30.00, 27.91°)
OKLab	oklab(25.12% 0.077 0.0358)
OKLCH	oklch(25.12% 0.085 25)
XYZ	xyz(2.4160, 1.3999, 0.4595)
Luminance	0.0140 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#420A0B #0A4241

analogous

#420A27 #420A0B #42250A

triadic

#420A0B #0B420A #0A0B42

tetradic

#420A0B #27420A #0A4241 #250A42

square

#420A0B #27420A #0A4241 #250A42

split-complementary

#420A0B #0A4225 #0A2742

monochromatic

#1B0404 #1B0404 #420A0B #771214 #AC1A1D

Accessibility & contrast

On white

16.41

#420A0B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#420A0B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #420A0B

16.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##420A0B	#FFFFFF	#000000	##FFFFFF
##420A0B	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)

#1B180A

Deuteranopia (green-blind)

#292409

Tritanopia (blue-blind)

#4A000B

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #420a0b;
/* rgb */ color: rgb(66, 10, 11);
/* oklch */ color: oklch(25.1% 0.085 25.0);

Tailwind

colors: {
  custom: {
    50: '#7c4f4b',
    500: '#420a0b',
    950: '#000000',
  },
}

SCSS

$custom: #420a0b;
$custom-light: #7c4f4b;
$custom-dark: #000000;

JSON

{
  "hex": "#420a0b",
  "rgb": {
    "r": 66,
    "g": 10,
    "b": 11
  },
  "hsl": {
    "h": 358.929,
    "s": 73.684,
    "l": 14.902
  },
  "oklch": {
    "l": 0.25125,
    "c": 0.08488,
    "h": 25
  },
  "luminance": 0.01399
}

Semantic roles & 50–950 ramp

primary

#420A0B

secondary

#297F7E

accent

#F0ED37

background

#F8F4F4

surface

#EFE7E7

border

#CAC3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #420A0B

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

Preview Lab → · Contrast checker → · Palette generator →