#420F0B#420F0B

#420F0B is a dark, moderate red. Relative luminance 0.015; OKLCH L 25.7% C 0.080 H 28.4°. Best body text is #FFFFFF at 16.09:1 contrast (WCAG AA passes).

Color values

HEX	#420F0B
RGB	rgb(66, 15, 11)
HSL	hsl(4, 71%, 15%)
HSV	hsv(4, 83%, 26%)
CMYK	cmyk(0%, 77.3%, 83.3%, 74.1%)
CIE-LAB	lab(12.76, 24.29, 15.13)
CIE-LCH	lch(12.76, 28.62, 31.92°)
OKLab	oklab(25.73% 0.0699 0.0378)
OKLCH	oklch(25.73% 0.08 28.4)
XYZ	xyz(2.4783, 1.5244, 0.4803)
Luminance	0.0152 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#420F0B #0B3E42

analogous

#420B22 #420F0B #422B0B

triadic

#420F0B #0B420F #0F0B42

tetradic

#420F0B #22420B #0B3E42 #2B0B42

square

#420F0B #22420B #0B3E42 #2B0B42

split-complementary

#420F0B #0B422B #0B2242

monochromatic

#1A0604 #1A0604 #420F0B #761B14 #AB271C

Accessibility & contrast

On white

16.09

#420F0B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#420F0B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #420F0B

16.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##420F0B	#FFFFFF	#000000	##FFFFFF
##420F0B	1.00	16.09	1.30	16.09
#FFFFFF	16.09	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E1A0A

Deuteranopia (green-blind)

#2A2509

Tritanopia (blue-blind)

#49020E

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #420f0b;
/* rgb */ color: rgb(66, 15, 11);
/* oklch */ color: oklch(25.7% 0.080 28.4);

Tailwind

colors: {
  custom: {
    50: '#7b514b',
    500: '#420f0b',
    950: '#000000',
  },
}

SCSS

$custom: #420f0b;
$custom-light: #7b514b;
$custom-dark: #000000;

JSON

{
  "hex": "#420f0b",
  "rgb": {
    "r": 66,
    "g": 15,
    "b": 11
  },
  "hsl": {
    "h": 4.364,
    "s": 71.429,
    "l": 15.098
  },
  "oklch": {
    "l": 0.25727,
    "c": 0.07951,
    "h": 28.4
  },
  "luminance": 0.01524
}

Semantic roles & 50–950 ramp

primary

#420F0B

secondary

#2A787F

accent

#E1EE3A

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #420F0B

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

Preview Lab → · Contrast checker → · Palette generator →