#100B0A#100B0A

#100B0A is a very dark, near-neutral red. Relative luminance 0.004; OKLCH L 15.6% C 0.009 H 31.2°. Best body text is #FFFFFF at 19.55:1 contrast (WCAG AA passes).

Color values

HEX	#100B0A
RGB	rgb(16, 11, 10)
HSL	hsl(10, 23%, 5%)
HSV	hsv(10, 38%, 6%)
CMYK	cmyk(0%, 31.3%, 37.5%, 93.7%)
CIE-LAB	lab(3.35, 1.44, 0.95)
CIE-LCH	lch(3.35, 1.72, 33.33°)
OKLab	oklab(15.58% 0.0077 0.0047)
OKLCH	oklch(15.58% 0.009 31.2)
XYZ	xyz(0.3881, 0.3714, 0.3383)
Luminance	0.0037 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100B0A #0A0F10

analogous

#100A0C #100B0A #100E0A

triadic

#100B0A #0A100B #0B0A10

tetradic

#100B0A #0C100A #0A0F10 #0E0A10

square

#100B0A #0C100A #0A0F10 #0E0A10

split-complementary

#100B0A #0A100E #0A0C10

monochromatic

#130D0C #130D0C #130D0C #362522 #5B3F39

Accessibility & contrast

On white

19.55

#100B0A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.07

#100B0A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100B0A

19.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100B0A	#FFFFFF	#000000	##FFFFFF
##100B0A	1.00	19.55	1.07	19.55
#FFFFFF	19.55	1.00	21.00	1.00
#000000	1.07	21.00	1.00	21.00
##FFFFFF	19.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C0C0A

Deuteranopia (green-blind)

#0D0C0A

Tritanopia (blue-blind)

#110A0B

Achromatopsia (no color)

#0C0C0C

Design tokens & code

CSS

--color: #100b0a;
/* rgb */ color: rgb(16, 11, 10);
/* oklch */ color: oklch(15.6% 0.009 31.2);

Tailwind

colors: {
  custom: {
    50: '#4e4c4b',
    500: '#100b0a',
    950: '#000000',
  },
}

SCSS

$custom: #100b0a;
$custom-light: #4e4c4b;
$custom-dark: #000000;

JSON

{
  "hex": "#100b0a",
  "rgb": {
    "r": 16,
    "g": 11,
    "b": 10
  },
  "hsl": {
    "h": 10,
    "s": 23.077,
    "l": 5.098
  },
  "oklch": {
    "l": 0.15581,
    "c": 0.00903,
    "h": 31.2
  },
  "luminance": 0.00371
}

Semantic roles & 50–950 ramp

primary

#100B0A

secondary

#314144

accent

#B1C068

background

#F4F4F4

surface

#E7E7E7

border

#C3C3C3

text

#010101

muted

#777777

Preview Lab

Preview with #100B0A

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

Preview Lab → · Contrast checker → · Palette generator →