#420A0C#420A0C

#420A0C is a dark, moderate red. Relative luminance 0.014; OKLCH L 25.1% C 0.085 H 24.1°. Best body text is #FFFFFF at 16.40:1 contrast (WCAG AA passes).

Color values

HEX	#420A0C
RGB	rgb(66, 10, 12)
HSL	hsl(358, 74%, 15%)
HSV	hsv(358, 85%, 26%)
CMYK	cmyk(0%, 84.8%, 81.8%, 74.1%)
CIE-LAB	lab(11.97, 26.56, 13.62)
CIE-LCH	lch(11.97, 29.85, 27.15°)
OKLab	oklab(25.14% 0.0774 0.0346)
OKLCH	oklch(25.14% 0.085 24.1)
XYZ	xyz(2.4219, 1.4023, 0.4909)
Luminance	0.0140 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#420A0C #0A4240

analogous

#420A28 #420A0C #42240A

triadic

#420A0C #0C420A #0A0C42

tetradic

#420A0C #28420A #0A4240 #240A42

square

#420A0C #28420A #0A4240 #240A42

split-complementary

#420A0C #0A4224 #0A2842

monochromatic

#1B0405 #1B0405 #420A0C #771216 #AC1A1F

Accessibility & contrast

On white

16.40

#420A0C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#420A0C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #420A0C

16.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##420A0C	#FFFFFF	#000000	##FFFFFF
##420A0C	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)

#1B180C

Deuteranopia (green-blind)

#29240A

Tritanopia (blue-blind)

#49000B

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #420a0c;
/* rgb */ color: rgb(66, 10, 12);
/* oklch */ color: oklch(25.1% 0.085 24.1);

Tailwind

colors: {
  custom: {
    50: '#7c4f4c',
    500: '#420a0c',
    950: '#000000',
  },
}

SCSS

$custom: #420a0c;
$custom-light: #7c4f4c;
$custom-dark: #000000;

JSON

{
  "hex": "#420a0c",
  "rgb": {
    "r": 66,
    "g": 10,
    "b": 12
  },
  "hsl": {
    "h": 357.857,
    "s": 73.684,
    "l": 14.902
  },
  "oklch": {
    "l": 0.25142,
    "c": 0.08474,
    "h": 24.1
  },
  "luminance": 0.01402
}

Semantic roles & 50–950 ramp

primary

#420A0C

secondary

#297F7C

accent

#F0EA37

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #420A0C

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

Preview Lab → · Contrast checker → · Palette generator →