#100300#100300

#100300 is a very dark, muted red. Relative luminance 0.002; OKLCH L 12.4% C 0.034 H 48.4°. Best body text is #FFFFFF at 20.29:1 contrast (WCAG AA passes).

Color values

HEX	#100300
RGB	rgb(16, 3, 0)
HSL	hsl(11, 100%, 3%)
HSV	hsv(11, 100%, 6%)
CMYK	cmyk(0%, 81.3%, 100%, 93.7%)
CIE-LAB	lab(1.58, 3.26, 2.43)
CIE-LCH	lch(1.58, 4.07, 36.68°)
OKLab	oklab(12.37% 0.0223 0.025)
OKLCH	oklch(12.37% 0.034 48.4)
XYZ	xyz(0.2463, 0.1753, 0.0209)
Luminance	0.0018 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100300 #000D10

analogous

#100005 #100300 #100B00

triadic

#100300 #001003 #030010

tetradic

#100300 #051000 #000D10 #0B0010

square

#100300 #051000 #000D10 #0B0010

split-complementary

#100300 #00100B #000510

monochromatic

#1F0600 #1F0600 #1F0600 #4D0E00 #8A1A00

Accessibility & contrast

On white

20.29

#100300 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.03

#100300 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100300

20.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100300	#FFFFFF	#000000	##FFFFFF
##100300	1.00	20.29	1.03	20.29
#FFFFFF	20.29	1.00	21.00	1.00
#000000	1.03	21.00	1.00	21.00
##FFFFFF	20.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#060400

Deuteranopia (green-blind)

#090700

Tritanopia (blue-blind)

#130102

Achromatopsia (no color)

#060606

Design tokens & code

CSS

--color: #100300;
/* rgb */ color: rgb(16, 3, 0);
/* oklch */ color: oklch(12.4% 0.034 48.4);

Tailwind

colors: {
  custom: {
    50: '#4e4847',
    500: '#100300',
    950: '#000000',
  },
}

SCSS

$custom: #100300;
$custom-light: #4e4847;
$custom-dark: #000000;

JSON

{
  "hex": "#100300",
  "rgb": {
    "r": 16,
    "g": 3,
    "b": 0
  },
  "hsl": {
    "h": 11.25,
    "s": 100,
    "l": 3.137
  },
  "oklch": {
    "l": 0.12371,
    "c": 0.0335,
    "h": 48.4
  },
  "luminance": 0.00175
}

Semantic roles & 50–950 ramp

primary

#100300

secondary

#104D5C

accent

#D7FF29

background

#F4F4F3

surface

#E7E6E5

border

#C3C2C1

text

#010000

muted

#777777

Preview Lab

Preview with #100300

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

Preview Lab → · Contrast checker → · Palette generator →