#210104#210104

#210104 is a very dark, muted red. Relative luminance 0.004; OKLCH L 16.0% C 0.060 H 18.8°. Best body text is #FFFFFF at 19.61:1 contrast (WCAG AA passes).

Color values

HEX	#210104
RGB	rgb(33, 1, 4)
HSL	hsl(354, 94%, 7%)
HSV	hsv(354, 97%, 13%)
CMYK	cmyk(0%, 97%, 87.9%, 87.1%)
CIE-LAB	lab(3.20, 13.26, 3.39)
CIE-LCH	lch(3.20, 13.68, 14.34°)
OKLab	oklab(15.99% 0.0568 0.0193)
OKLCH	oklch(15.99% 0.06 18.8)
XYZ	xyz(0.6600, 0.3539, 0.1484)
Luminance	0.0035 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#210104 #01211E

analogous

#210114 #210104 #210E01

triadic

#210104 #042101 #010421

tetradic

#210104 #142101 #01211E #0E0121

square

#210104 #142101 #01211E #0E0121

split-complementary

#210104 #01210E #011421

monochromatic

#1E0104 #1E0104 #210104 #5C030B #980512

Accessibility & contrast

On white

19.61

#210104 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.07

#210104 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #210104

19.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##210104	#FFFFFF	#000000	##FFFFFF
##210104	1.00	19.61	1.07	19.61
#FFFFFF	19.61	1.00	21.00	1.00
#000000	1.07	21.00	1.00	21.00
##FFFFFF	19.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#080704

Deuteranopia (green-blind)

#110E03

Tritanopia (blue-blind)

#250002

Achromatopsia (no color)

#0C0C0C

Design tokens & code

CSS

--color: #210104;
/* rgb */ color: rgb(33, 1, 4);
/* oklch */ color: oklch(16.0% 0.060 18.8);

Tailwind

colors: {
  custom: {
    50: '#5c4748',
    500: '#210104',
    950: '#000000',
  },
}

SCSS

$custom: #210104;
$custom-light: #5c4748;
$custom-dark: #000000;

JSON

{
  "hex": "#210104",
  "rgb": {
    "r": 33,
    "g": 1,
    "b": 4
  },
  "hsl": {
    "h": 354.375,
    "s": 94.118,
    "l": 6.667
  },
  "oklch": {
    "l": 0.15991,
    "c": 0.05995,
    "h": 18.8
  },
  "luminance": 0.00354
}

Semantic roles & 50–950 ramp

primary

#210104

secondary

#156861

accent

#FFEB29

background

#F5F3F4

surface

#E9E5E6

border

#C5C1C2

text

#040000

muted

#797777

Preview Lab

Preview with #210104

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

Preview Lab → · Contrast checker → · Palette generator →