#210100#210100

#210100 is a very dark, moderate red. Relative luminance 0.003; OKLCH L 15.8% C 0.061 H 31.3°. Best body text is #FFFFFF at 19.64:1 contrast (WCAG AA passes).

Color values

HEX	#210100
RGB	rgb(33, 1, 0)
HSL	hsl(2, 100%, 6%)
HSV	hsv(2, 100%, 13%)
CMYK	cmyk(0%, 97%, 100%, 87.1%)
CIE-LAB	lab(3.12, 12.70, 4.90)
CIE-LCH	lch(3.12, 13.61, 21.12°)
OKLab	oklab(15.84% 0.0524 0.0318)
OKLCH	oklch(15.84% 0.061 31.3)
XYZ	xyz(0.6381, 0.3452, 0.0330)
Luminance	0.0034 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#210100 #002021

analogous

#210010 #210100 #211200

triadic

#210100 #002101 #010021

tetradic

#210100 #102100 #002021 #120021

square

#210100 #102100 #002021 #120021

split-complementary

#210100 #002112 #001021

monochromatic

#1F0100 #1F0100 #210100 #5E0300 #9B0500

Accessibility & contrast

On white

19.64

#210100 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.07

#210100 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #210100

19.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##210100	#FFFFFF	#000000	##FFFFFF
##210100	1.00	19.64	1.07	19.64
#FFFFFF	19.64	1.00	21.00	1.00
#000000	1.07	21.00	1.00	21.00
##FFFFFF	19.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#090700

Deuteranopia (green-blind)

#120E00

Tritanopia (blue-blind)

#260001

Achromatopsia (no color)

#0B0B0B

Design tokens & code

CSS

--color: #210100;
/* rgb */ color: rgb(33, 1, 0);
/* oklch */ color: oklch(15.8% 0.061 31.3);

Tailwind

colors: {
  custom: {
    50: '#5c4747',
    500: '#210100',
    950: '#000000',
  },
}

SCSS

$custom: #210100;
$custom-light: #5c4747;
$custom-dark: #000000;

JSON

{
  "hex": "#210100",
  "rgb": {
    "r": 33,
    "g": 1,
    "b": 0
  },
  "hsl": {
    "h": 1.818,
    "s": 100,
    "l": 6.471
  },
  "oklch": {
    "l": 0.15836,
    "c": 0.06126,
    "h": 31.3
  },
  "luminance": 0.00345
}

Semantic roles & 50–950 ramp

primary

#210100

secondary

#13676A

accent

#F9FF29

background

#F5F3F3

surface

#E9E5E5

border

#C5C1C1

text

#040000

muted

#797777

Preview Lab

Preview with #210100

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

Preview Lab → · Contrast checker → · Palette generator →