#420A0D#420A0D

#420A0D is a dark, moderate red. Relative luminance 0.014; OKLCH L 25.2% C 0.085 H 23.2°. Best body text is #FFFFFF at 16.40:1 contrast (WCAG AA passes).

Color values

HEX	#420A0D
RGB	rgb(66, 10, 13)
HSL	hsl(357, 74%, 15%)
HSV	hsv(357, 85%, 26%)
CMYK	cmyk(0%, 84.8%, 80.3%, 74.1%)
CIE-LAB	lab(11.99, 26.62, 13.18)
CIE-LCH	lch(11.99, 29.70, 26.34°)
OKLab	oklab(25.16% 0.0778 0.0333)
OKLCH	oklch(25.16% 0.085 23.2)
XYZ	xyz(2.4282, 1.4048, 0.5240)
Luminance	0.0140 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#420A0D #0A423F

analogous

#420A29 #420A0D #42230A

triadic

#420A0D #0D420A #0A0D42

tetradic

#420A0D #29420A #0A423F #230A42

square

#420A0D #29420A #0A423F #230A42

split-complementary

#420A0D #0A4223 #0A2942

monochromatic

#1B0405 #1B0405 #420A0D #771217 #AC1A22

Accessibility & contrast

On white

16.40

#420A0D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#420A0D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #420A0D

16.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##420A0D	#FFFFFF	#000000	##FFFFFF
##420A0D	1.00	16.40	1.28	16.40
#FFFFFF	16.40	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B180D

Deuteranopia (green-blind)

#29240B

Tritanopia (blue-blind)

#49000C

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #420a0d;
/* rgb */ color: rgb(66, 10, 13);
/* oklch */ color: oklch(25.2% 0.085 23.2);

Tailwind

colors: {
  custom: {
    50: '#7c4f4c',
    500: '#420a0d',
    950: '#000000',
  },
}

SCSS

$custom: #420a0d;
$custom-light: #7c4f4c;
$custom-dark: #000000;

JSON

{
  "hex": "#420a0d",
  "rgb": {
    "r": 66,
    "g": 10,
    "b": 13
  },
  "hsl": {
    "h": 356.786,
    "s": 73.684,
    "l": 14.902
  },
  "oklch": {
    "l": 0.2516,
    "c": 0.08462,
    "h": 23.2
  },
  "luminance": 0.01404
}

Semantic roles & 50–950 ramp

primary

#420A0D

secondary

#297F7B

accent

#F0E637

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #420A0D

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

Preview Lab → · Contrast checker → · Palette generator →