#421010#421010

#421010 is a dark, moderate red. Relative luminance 0.016; OKLCH L 25.9% C 0.077 H 24.3°. Best body text is #FFFFFF at 15.99:1 contrast (WCAG AA passes).

Color values

HEX	#421010
RGB	rgb(66, 16, 16)
HSL	hsl(0, 61%, 16%)
HSV	hsv(0, 76%, 26%)
CMYK	cmyk(0%, 75.8%, 75.8%, 74.1%)
CIE-LAB	lab(13.03, 24.10, 13.02)
CIE-LCH	lch(13.03, 27.39, 28.39°)
OKLab	oklab(25.95% 0.0706 0.0319)
OKLCH	oklch(25.95% 0.077 24.3)
XYZ	xyz(2.5258, 1.5666, 0.6595)
Luminance	0.0157 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#421010 #104242

analogous

#421029 #421010 #422910

triadic

#421010 #104210 #101042

tetradic

#421010 #294210 #104242 #291042

square

#421010 #294210 #104242 #291042

split-complementary

#421010 #104229 #102942

monochromatic

#190606 #190606 #421010 #731C1C #A52828

Accessibility & contrast

On white

15.99

#421010 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#421010 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #421010

15.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##421010	#FFFFFF	#000000	##FFFFFF
##421010	1.00	15.99	1.31	15.99
#FFFFFF	15.99	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	15.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E1B10

Deuteranopia (green-blind)

#2A260F

Tritanopia (blue-blind)

#490411

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #421010;
/* rgb */ color: rgb(66, 16, 16);
/* oklch */ color: oklch(25.9% 0.077 24.3);

Tailwind

colors: {
  custom: {
    50: '#7b524e',
    500: '#421010',
    950: '#000000',
  },
}

SCSS

$custom: #421010;
$custom-light: #7b524e;
$custom-dark: #000000;

JSON

{
  "hex": "#421010",
  "rgb": {
    "r": 66,
    "g": 16,
    "b": 16
  },
  "hsl": {
    "h": 0,
    "s": 60.976,
    "l": 16.078
  },
  "oklch": {
    "l": 0.2595,
    "c": 0.07744,
    "h": 24.3
  },
  "luminance": 0.01566
}

Semantic roles & 50–950 ramp

primary

#421010

secondary

#327C7C

accent

#E4E444

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #421010

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

Preview Lab → · Contrast checker → · Palette generator →