#100104#100104

#100104 is a very dark, muted red. Relative luminance 0.001; OKLCH L 11.7% C 0.039 H 4.9°. Best body text is #FFFFFF at 20.42:1 contrast (WCAG AA passes).

Color values

HEX	#100104
RGB	rgb(16, 1, 4)
HSL	hsl(348, 88%, 3%)
HSV	hsv(348, 94%, 6%)
CMYK	cmyk(0%, 93.8%, 75%, 93.7%)
CIE-LAB	lab(1.27, 4.62, 0.35)
CIE-LCH	lch(1.27, 4.63, 4.28°)
OKLab	oklab(11.71% 0.0387 0.0033)
OKLCH	oklch(11.71% 0.039 4.9)
XYZ	xyz(0.2465, 0.1407, 0.1290)
Luminance	0.0014 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100104 #01100D

analogous

#10010B #100104 #100501

triadic

#100104 #041001 #010410

tetradic

#100104 #0B1001 #01100D #050110

square

#100104 #0B1001 #01100D #050110

split-complementary

#100104 #011005 #010B10

monochromatic

#1D0207 #1D0207 #1D0207 #4A0512 #830821

Accessibility & contrast

On white

20.42

#100104 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.03

#100104 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100104

20.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100104	#FFFFFF	#000000	##FFFFFF
##100104	1.00	20.42	1.03	20.42
#FFFFFF	20.42	1.00	21.00	1.00
#000000	1.03	21.00	1.00	21.00
##FFFFFF	20.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#030304

Deuteranopia (green-blind)

#060604

Tritanopia (blue-blind)

#120002

Achromatopsia (no color)

#050505

Design tokens & code

CSS

--color: #100104;
/* rgb */ color: rgb(16, 1, 4);
/* oklch */ color: oklch(11.7% 0.039 4.9);

Tailwind

colors: {
  custom: {
    50: '#4e4748',
    500: '#100104',
    950: '#000000',
  },
}

SCSS

$custom: #100104;
$custom-light: #4e4748;
$custom-dark: #000000;

JSON

{
  "hex": "#100104",
  "rgb": {
    "r": 16,
    "g": 1,
    "b": 4
  },
  "hsl": {
    "h": 348,
    "s": 88.235,
    "l": 3.333
  },
  "oklch": {
    "l": 0.11709,
    "c": 0.03888,
    "h": 4.9
  },
  "luminance": 0.00141
}

Semantic roles & 50–950 ramp

primary

#100104

secondary

#15584B

accent

#FED429

background

#F4F3F4

surface

#E7E5E6

border

#C3C1C2

text

#010000

muted

#777777

Preview Lab

Preview with #100104

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

Preview Lab → · Contrast checker → · Palette generator →