#00212B#00212B

#00212B is a very dark, muted cyan. Relative luminance 0.013; OKLCH L 23.0% C 0.042 H 222.0°. Best body text is #FFFFFF at 16.77:1 contrast (WCAG AA passes).

Color values

HEX	#00212B
RGB	rgb(0, 33, 43)
HSL	hsl(194, 100%, 8%)
HSV	hsv(194, 100%, 17%)
CMYK	cmyk(100%, 23.3%, 0%, 83.1%)
CIE-LAB	lab(11.01, -7.59, -10.11)
CIE-LCH	lch(11.01, 12.64, 233.07°)
OKLab	oklab(22.97% -0.0315 -0.0284)
OKLCH	oklch(22.97% 0.042 222)
XYZ	xyz(0.9797, 1.2620, 2.4770)
Luminance	0.0126 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#00212B #2B0A00

analogous

#002B1F #00212B #000B2B

triadic

#00212B #2B0021 #212B00

tetradic

#00212B #1F002B #2B0A00 #0B2B00

square

#00212B #1F002B #2B0A00 #0B2B00

split-complementary

#00212B #2B000B #2B1F00

monochromatic

#00171F #00171F #00212B #005068 #007FA5

Accessibility & contrast

On white

16.77

#00212B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#00212B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #00212B

16.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##00212B	#FFFFFF	#000000	##FFFFFF
##00212B	1.00	16.77	1.25	16.77
#FFFFFF	16.77	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B202C

Deuteranopia (green-blind)

#151C2B

Tritanopia (blue-blind)

#002424

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #00212b;
/* rgb */ color: rgb(0, 33, 43);
/* oklch */ color: oklch(23.0% 0.042 222.0);

Tailwind

colors: {
  custom: {
    50: '#485c64',
    500: '#00212b',
    950: '#000000',
  },
}

SCSS

$custom: #00212b;
$custom-light: #485c64;
$custom-dark: #000000;

JSON

{
  "hex": "#00212b",
  "rgb": {
    "r": 0,
    "g": 33,
    "b": 43
  },
  "hsl": {
    "h": 193.953,
    "s": 100,
    "l": 8.431
  },
  "oklch": {
    "l": 0.22967,
    "c": 0.04243,
    "h": 222
  },
  "luminance": 0.01262
}

Semantic roles & 50–950 ramp

primary

#00212B

secondary

#732A14

accent

#5B29FF

background

#F4F5F5

surface

#E7E9EA

border

#C3C5C6

text

#010405

muted

#777979

Preview Lab

Preview with #00212B

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

Preview Lab → · Contrast checker → · Palette generator →