#421B10#421B10

#421B10 is a dark, moderate red. Relative luminance 0.020; OKLCH L 27.7% C 0.064 H 36.6°. Best body text is #FFFFFF at 15.04:1 contrast (WCAG AA passes).

Color values

HEX	#421B10
RGB	rgb(66, 27, 16)
HSL	hsl(13, 61%, 16%)
HSV	hsv(13, 76%, 26%)
CMYK	cmyk(0%, 59.1%, 75.8%, 74.1%)
CIE-LAB	lab(15.38, 17.91, 16.10)
CIE-LCH	lch(15.38, 24.08, 41.96°)
OKLab	oklab(27.73% 0.0513 0.0381)
OKLCH	oklch(27.73% 0.064 36.6)
XYZ	xyz(2.7325, 1.9799, 0.7284)
Luminance	0.0198 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#421B10 #103742

analogous

#42101E #421B10 #423410

triadic

#421B10 #10421B #1B1042

tetradic

#421B10 #1E4210 #103742 #341042

square

#421B10 #1E4210 #103742 #341042

split-complementary

#421B10 #104234 #101E42

monochromatic

#190A06 #190A06 #421B10 #732F1C #A54328

Accessibility & contrast

On white

15.04

#421B10 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.40

#421B10 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #421B10

15.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##421B10	#FFFFFF	#000000	##FFFFFF
##421B10	1.00	15.04	1.40	15.04
#FFFFFF	15.04	1.00	21.00	1.00
#000000	1.40	21.00	1.00	21.00
##FFFFFF	15.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#25210F

Deuteranopia (green-blind)

#2F2A0F

Tritanopia (blue-blind)

#491318

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #421b10;
/* rgb */ color: rgb(66, 27, 16);
/* oklch */ color: oklch(27.7% 0.064 36.6);

Tailwind

colors: {
  custom: {
    50: '#7a584e',
    500: '#421b10',
    950: '#000000',
  },
}

SCSS

$custom: #421b10;
$custom-light: #7a584e;
$custom-dark: #000000;

JSON

{
  "hex": "#421b10",
  "rgb": {
    "r": 66,
    "g": 27,
    "b": 16
  },
  "hsl": {
    "h": 13.2,
    "s": 60.976,
    "l": 16.078
  },
  "oklch": {
    "l": 0.27729,
    "c": 0.06386,
    "h": 36.6
  },
  "luminance": 0.0198
}

Semantic roles & 50–950 ramp

primary

#421B10

secondary

#326C7C

accent

#C1E444

background

#F7F5F4

surface

#EEE9E7

border

#C9C5C3

text

#0A0301

muted

#7C7877

Preview Lab

Preview with #421B10

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

Preview Lab → · Contrast checker → · Palette generator →