#210506#210506

#210506 is a very dark, muted red. Relative luminance 0.004; OKLCH L 17.1% C 0.050 H 21.4°. Best body text is #FFFFFF at 19.28:1 contrast (WCAG AA passes).

Color values

HEX	#210506
RGB	rgb(33, 5, 6)
HSL	hsl(358, 74%, 7%)
HSV	hsv(358, 85%, 13%)
CMYK	cmyk(0%, 84.8%, 81.8%, 87.1%)
CIE-LAB	lab(4.02, 11.93, 3.78)
CIE-LCH	lch(4.02, 12.52, 17.56°)
OKLab	oklab(17.06% 0.0464 0.0182)
OKLCH	oklch(17.06% 0.05 21.4)
XYZ	xyz(0.7144, 0.4451, 0.2206)
Luminance	0.0044 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#210506 #052120

analogous

#210514 #210506 #211205

triadic

#210506 #062105 #050621

tetradic

#210506 #142105 #052120 #120521

square

#210506 #142105 #052120 #120521

split-complementary

#210506 #052112 #051421

monochromatic

#1B0405 #1B0405 #210506 #560D10 #8B1519

Accessibility & contrast

On white

19.28

#210506 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.09

#210506 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #210506

19.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##210506	#FFFFFF	#000000	##FFFFFF
##210506	1.00	19.28	1.09	19.28
#FFFFFF	19.28	1.00	21.00	1.00
#000000	1.09	21.00	1.00	21.00
##FFFFFF	19.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C0A06

Deuteranopia (green-blind)

#131005

Tritanopia (blue-blind)

#250206

Achromatopsia (no color)

#0E0E0E

Design tokens & code

CSS

--color: #210506;
/* rgb */ color: rgb(33, 5, 6);
/* oklch */ color: oklch(17.1% 0.050 21.4);

Tailwind

colors: {
  custom: {
    50: '#5c4849',
    500: '#210506',
    950: '#000000',
  },
}

SCSS

$custom: #210506;
$custom-light: #5c4849;
$custom-dark: #000000;

JSON

{
  "hex": "#210506",
  "rgb": {
    "r": 33,
    "g": 5,
    "b": 6
  },
  "hsl": {
    "h": 357.857,
    "s": 73.684,
    "l": 7.451
  },
  "oklch": {
    "l": 0.17056,
    "c": 0.04986,
    "h": 21.4
  },
  "luminance": 0.00445
}

Semantic roles & 50–950 ramp

primary

#210506

secondary

#1F6260

accent

#F0EA37

background

#F5F4F4

surface

#E9E6E6

border

#C5C2C2

text

#040000

muted

#797777

Preview Lab

Preview with #210506

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

Preview Lab → · Contrast checker → · Palette generator →