#420F0A#420F0A

#420F0A is a dark, moderate red. Relative luminance 0.015; OKLCH L 25.7% C 0.080 H 29.3°. Best body text is #FFFFFF at 16.10:1 contrast (WCAG AA passes).

Color values

HEX	#420F0A
RGB	rgb(66, 15, 10)
HSL	hsl(5, 74%, 15%)
HSV	hsv(5, 85%, 26%)
CMYK	cmyk(0%, 77.3%, 84.8%, 74.1%)
CIE-LAB	lab(12.75, 24.24, 15.53)
CIE-LCH	lch(12.75, 28.79, 32.65°)
OKLab	oklab(25.71% 0.0695 0.039)
OKLCH	oklch(25.71% 0.08 29.3)
XYZ	xyz(2.4727, 1.5222, 0.4507)
Luminance	0.0152 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#420F0A #0A3D42

analogous

#420A21 #420F0A #422B0A

triadic

#420F0A #0A420F #0F0A42

tetradic

#420F0A #21420A #0A3D42 #2B0A42

square

#420F0A #21420A #0A3D42 #2B0A42

split-complementary

#420F0A #0A422B #0A2142

monochromatic

#1B0604 #1B0604 #420F0A #771B12 #AC271A

Accessibility & contrast

On white

16.10

#420F0A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#420F0A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #420F0A

16.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##420F0A	#FFFFFF	#000000	##FFFFFF
##420F0A	1.00	16.10	1.30	16.10
#FFFFFF	16.10	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E1A09

Deuteranopia (green-blind)

#2A2508

Tritanopia (blue-blind)

#49020E

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #420f0a;
/* rgb */ color: rgb(66, 15, 10);
/* oklch */ color: oklch(25.7% 0.080 29.3);

Tailwind

colors: {
  custom: {
    50: '#7b514b',
    500: '#420f0a',
    950: '#000000',
  },
}

SCSS

$custom: #420f0a;
$custom-light: #7b514b;
$custom-dark: #000000;

JSON

{
  "hex": "#420f0a",
  "rgb": {
    "r": 66,
    "g": 15,
    "b": 10
  },
  "hsl": {
    "h": 5.357,
    "s": 73.684,
    "l": 14.902
  },
  "oklch": {
    "l": 0.25712,
    "c": 0.07971,
    "h": 29.3
  },
  "luminance": 0.01522
}

Semantic roles & 50–950 ramp

primary

#420F0A

secondary

#29777F

accent

#E0F037

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #420F0A

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

Preview Lab → · Contrast checker → · Palette generator →