#1C0100#1C0100

#1C0100 is a very dark, muted red. Relative luminance 0.003; OKLCH L 14.6% C 0.055 H 31.9°. Best body text is #FFFFFF at 19.93:1 contrast (WCAG AA passes).

Color values

HEX	#1C0100
RGB	rgb(28, 1, 0)
HSL	hsl(2, 100%, 5%)
HSV	hsv(2, 100%, 11%)
CMYK	cmyk(0%, 96.4%, 100%, 89%)
CIE-LAB	lab(2.43, 9.60, 3.81)
CIE-LCH	lch(2.43, 10.33, 21.65°)
OKLab	oklab(14.55% 0.047 0.0292)
OKLCH	oklch(14.55% 0.055 31.9)
XYZ	xyz(0.4898, 0.2687, 0.0261)
Luminance	0.0027 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C0100 #001B1C

analogous

#1C000D #1C0100 #1C0F00

triadic

#1C0100 #001C01 #01001C

tetradic

#1C0100 #0D1C00 #001B1C #0F001C

square

#1C0100 #0D1C00 #001B1C #0F001C

split-complementary

#1C0100 #001C0F #000D1C

monochromatic

#1F0100 #1F0100 #1F0100 #590300 #960500

Accessibility & contrast

On white

19.93

#1C0100 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.05

#1C0100 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C0100

19.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C0100	#FFFFFF	#000000	##FFFFFF
##1C0100	1.00	19.93	1.05	19.93
#FFFFFF	19.93	1.00	21.00	1.00
#000000	1.05	21.00	1.00	21.00
##FFFFFF	19.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#070500

Deuteranopia (green-blind)

#0E0B00

Tritanopia (blue-blind)

#200001

Achromatopsia (no color)

#090909

Design tokens & code

CSS

--color: #1c0100;
/* rgb */ color: rgb(28, 1, 0);
/* oklch */ color: oklch(14.6% 0.055 31.9);

Tailwind

colors: {
  custom: {
    50: '#574747',
    500: '#1c0100',
    950: '#000000',
  },
}

SCSS

$custom: #1c0100;
$custom-light: #574747;
$custom-dark: #000000;

JSON

{
  "hex": "#1c0100",
  "rgb": {
    "r": 28,
    "g": 1,
    "b": 0
  },
  "hsl": {
    "h": 2.143,
    "s": 100,
    "l": 5.49
  },
  "oklch": {
    "l": 0.14551,
    "c": 0.05531,
    "h": 31.9
  },
  "luminance": 0.00269
}

Semantic roles & 50–950 ramp

primary

#1C0100

secondary

#126366

accent

#F7FF29

background

#F5F3F3

surface

#E9E5E5

border

#C5C1C1

text

#030000

muted

#787777

Preview Lab

Preview with #1C0100

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

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