#28010A#28010A

#28010A is a very dark, moderate red. Relative luminance 0.005; OKLCH L 17.9% C 0.068 H 10.6°. Best body text is #FFFFFF at 19.11:1 contrast (WCAG AA passes).

Color values

HEX	#28010A
RGB	rgb(40, 1, 10)
HSL	hsl(346, 95%, 8%)
HSV	hsv(346, 98%, 16%)
CMYK	cmyk(0%, 97.5%, 75%, 84.3%)
CIE-LAB	lab(4.47, 19.12, 2.94)
CIE-LCH	lch(4.47, 19.35, 8.75°)
OKLab	oklab(17.92% 0.0671 0.0125)
OKLCH	oklch(17.92% 0.068 10.6)
XYZ	xyz(0.9408, 0.4949, 0.3331)
Luminance	0.0050 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28010A #01281F

analogous

#28011D #28010A #280B01

triadic

#28010A #0A2801 #010A28

tetradic

#28010A #1D2801 #01281F #0B0128

square

#28010A #1D2801 #01281F #0B0128

split-complementary

#28010A #01280B #011D28

monochromatic

#1E0107 #1E0107 #28010A #640219 #9F0428

Accessibility & contrast

On white

19.11

#28010A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#28010A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28010A

19.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28010A	#FFFFFF	#000000	##FFFFFF
##28010A	1.00	19.11	1.10	19.11
#FFFFFF	19.11	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A0A0A

Deuteranopia (green-blind)

#151309

Tritanopia (blue-blind)

#2D0004

Achromatopsia (no color)

#0F0F0F

Design tokens & code

CSS

--color: #28010a;
/* rgb */ color: rgb(40, 1, 10);
/* oklch */ color: oklch(17.9% 0.068 10.6);

Tailwind

colors: {
  custom: {
    50: '#64464b',
    500: '#28010a',
    950: '#000000',
  },
}

SCSS

$custom: #28010a;
$custom-light: #64464b;
$custom-dark: #000000;

JSON

{
  "hex": "#28010a",
  "rgb": {
    "r": 40,
    "g": 1,
    "b": 10
  },
  "hsl": {
    "h": 346.154,
    "s": 95.122,
    "l": 8.039
  },
  "oklch": {
    "l": 0.17921,
    "c": 0.06827,
    "h": 10.6
  },
  "luminance": 0.00495
}

Semantic roles & 50–950 ramp

primary

#28010A

secondary

#166F5A

accent

#FFCE29

background

#F6F3F4

surface

#EBE5E7

border

#C6C1C3

text

#060001

muted

#7A7677

Preview Lab

Preview with #28010A

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

Preview Lab → · Contrast checker → · Palette generator →