#28100A#28100A

#28100A is a very dark, muted red. Relative luminance 0.008; OKLCH L 20.8% C 0.042 H 35.1°. Best body text is #FFFFFF at 17.97:1 contrast (WCAG AA passes).

Color values

HEX	#28100A
RGB	rgb(40, 16, 10)
HSL	hsl(12, 60%, 10%)
HSV	hsv(12, 75%, 16%)
CMYK	cmyk(0%, 60%, 75%, 84.3%)
CIE-LAB	lab(7.62, 11.80, 7.54)
CIE-LCH	lch(7.62, 14.01, 32.59°)
OKLab	oklab(20.81% 0.0344 0.0242)
OKLCH	oklch(20.81% 0.042 35.1)
XYZ	xyz(1.1152, 0.8437, 0.3912)
Luminance	0.0084 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28100A #0A2228

analogous

#280A13 #28100A #281F0A

triadic

#28100A #0A2810 #100A28

tetradic

#28100A #13280A #0A2228 #1F0A28

square

#28100A #13280A #0A2228 #1F0A28

split-complementary

#28100A #0A281F #0A1328

monochromatic

#180A06 #180A06 #28100A #592416 #8A3722

Accessibility & contrast

On white

17.97

#28100A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#28100A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28100A

17.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28100A	#FFFFFF	#000000	##FFFFFF
##28100A	1.00	17.97	1.17	17.97
#FFFFFF	17.97	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	17.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#161409

Deuteranopia (green-blind)

#1C190A

Tritanopia (blue-blind)

#2C0C0F

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #28100a;
/* rgb */ color: rgb(40, 16, 10);
/* oklch */ color: oklch(20.8% 0.042 35.1);

Tailwind

colors: {
  custom: {
    50: '#634e4b',
    500: '#28100a',
    950: '#000000',
  },
}

SCSS

$custom: #28100a;
$custom-light: #634e4b;
$custom-dark: #000000;

JSON

{
  "hex": "#28100a",
  "rgb": {
    "r": 40,
    "g": 16,
    "b": 10
  },
  "hsl": {
    "h": 12,
    "s": 60,
    "l": 9.804
  },
  "oklch": {
    "l": 0.20805,
    "c": 0.04206,
    "h": 35.1
  },
  "luminance": 0.00844
}

Semantic roles & 50–950 ramp

primary

#28100A

secondary

#295965

accent

#C3E345

background

#F6F4F4

surface

#EBE7E7

border

#C6C3C3

text

#050101

muted

#7A7777

Preview Lab

Preview with #28100A

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

Preview Lab → · Contrast checker → · Palette generator →