#001021#001021

#001021 is a very dark, muted cyan. Relative luminance 0.005; OKLCH L 16.8% C 0.044 H 247.1°. Best body text is #FFFFFF at 19.16:1 contrast (WCAG AA passes).

Color values

HEX	#001021
RGB	rgb(0, 16, 33)
HSL	hsl(211, 100%, 6%)
HSV	hsv(211, 100%, 13%)
CMYK	cmyk(100%, 51.5%, 0%, 87.1%)
CIE-LAB	lab(4.34, 0.13, -12.95)
CIE-LCH	lch(4.34, 12.95, 270.58°)
OKLab	oklab(16.84% -0.0173 -0.0408)
OKLCH	oklch(16.84% 0.044 247.1)
XYZ	xyz(0.4597, 0.4803, 1.5070)
Luminance	0.0048 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#001021 #211100

analogous

#002121 #001021 #000021

triadic

#001021 #210010 #102100

tetradic

#001021 #210021 #211100 #002100

square

#001021 #210021 #211100 #002100

split-complementary

#001021 #210000 #212100

monochromatic

#000F1F #000F1F #001021 #002E5E #004B9B

Accessibility & contrast

On white

19.16

#001021 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#001021 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #001021

19.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##001021	#FFFFFF	#000000	##FFFFFF
##001021	1.00	19.16	1.10	19.16
#FFFFFF	19.16	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#081122

Deuteranopia (green-blind)

#030D21

Tritanopia (blue-blind)

#001416

Achromatopsia (no color)

#0F0F0F

Design tokens & code

CSS

--color: #001021;
/* rgb */ color: rgb(0, 16, 33);
/* oklch */ color: oklch(16.8% 0.044 247.1);

Tailwind

colors: {
  custom: {
    50: '#464e5c',
    500: '#001021',
    950: '#000000',
  },
}

SCSS

$custom: #001021;
$custom-light: #464e5c;
$custom-dark: #000000;

JSON

{
  "hex": "#001021",
  "rgb": {
    "r": 0,
    "g": 16,
    "b": 33
  },
  "hsl": {
    "h": 210.909,
    "s": 100,
    "l": 6.471
  },
  "oklch": {
    "l": 0.16837,
    "c": 0.04435,
    "h": 247.1
  },
  "luminance": 0.0048
}

Semantic roles & 50–950 ramp

primary

#001021

secondary

#6A4013

accent

#9729FF

background

#F3F4F5

surface

#E5E7E9

border

#C1C3C5

text

#000104

muted

#767779

Preview Lab

Preview with #001021

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

Preview Lab → · Contrast checker → · Palette generator →