#100B0B#100B0B

#100B0B is a very dark, near-neutral red. Relative luminance 0.004; OKLCH L 15.6% C 0.009 H 18.1°. Best body text is #FFFFFF at 19.54:1 contrast (WCAG AA passes).

Color values

HEX	#100B0B
RGB	rgb(16, 11, 11)
HSL	hsl(0, 19%, 5%)
HSV	hsv(0, 31%, 6%)
CMYK	cmyk(0%, 31.3%, 31.3%, 93.7%)
CIE-LAB	lab(3.38, 1.58, 0.56)
CIE-LCH	lch(3.38, 1.68, 19.43°)
OKLab	oklab(15.62% 0.0083 0.0027)
OKLCH	oklch(15.62% 0.009 18.1)
XYZ	xyz(0.3938, 0.3737, 0.3679)
Luminance	0.0037 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100B0B #0B1010

analogous

#100B0D #100B0B #100D0B

triadic

#100B0B #0B100B #0B0B10

tetradic

#100B0B #0D100B #0B1010 #0D0B10

square

#100B0B #0D100B #0B1010 #0D0B10

split-complementary

#100B0B #0B100D #0B0D10

monochromatic

#120C0C #120C0C #120C0C #342424 #593D3D

Accessibility & contrast

On white

19.54

#100B0B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.07

#100B0B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100B0B

19.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100B0B	#FFFFFF	#000000	##FFFFFF
##100B0B	1.00	19.54	1.07	19.54
#FFFFFF	19.54	1.00	21.00	1.00
#000000	1.07	21.00	1.00	21.00
##FFFFFF	19.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C0C0B

Deuteranopia (green-blind)

#0D0D0B

Tritanopia (blue-blind)

#110B0B

Achromatopsia (no color)

#0C0C0C

Design tokens & code

CSS

--color: #100b0b;
/* rgb */ color: rgb(16, 11, 11);
/* oklch */ color: oklch(15.6% 0.009 18.1);

Tailwind

colors: {
  custom: {
    50: '#4e4c4c',
    500: '#100b0b',
    950: '#000000',
  },
}

SCSS

$custom: #100b0b;
$custom-light: #4e4c4c;
$custom-dark: #000000;

JSON

{
  "hex": "#100b0b",
  "rgb": {
    "r": 16,
    "g": 11,
    "b": 11
  },
  "hsl": {
    "h": 0,
    "s": 18.519,
    "l": 5.294
  },
  "oklch": {
    "l": 0.15621,
    "c": 0.00874,
    "h": 18.1
  },
  "luminance": 0.00374
}

Semantic roles & 50–950 ramp

primary

#100B0B

secondary

#344343

accent

#BBBB6D

background

#F4F4F4

surface

#E7E7E7

border

#C3C3C3

text

#010101

muted

#777777

Preview Lab

Preview with #100B0B

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

Preview Lab → · Contrast checker → · Palette generator →