#21819C#21819C

#21819C is a mid, moderate cyan. Relative luminance 0.184; OKLCH L 56.2% C 0.094 H 221.5°. Best body text is #000000 at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#21819C
RGB	rgb(33, 129, 156)
HSL	hsl(193, 65%, 37%)
HSV	hsv(193, 79%, 61%)
CMYK	cmyk(78.8%, 17.3%, 0%, 38.8%)
CIE-LAB	lab(50.00, -17.49, -22.20)
CIE-LCH	lch(50.00, 28.26, 231.78°)
OKLab	oklab(56.18% -0.0702 -0.0622)
OKLCH	oklch(56.18% 0.094 221.5)
XYZ	xyz(14.4757, 18.4224, 34.2390)
Luminance	0.1842 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21819C #9C3C21

analogous

#219C7A #21819C #21439C

triadic

#21819C #9C2181 #819C21

tetradic

#21819C #7A219C #9C3C21 #439C21

square

#21819C #7A219C #9C3C21 #439C21

split-complementary

#21819C #9C2143 #9C7A21

monochromatic

#0C2D37 #165769 #21819C #2CABCF #5BC0DC

Accessibility & contrast

On white

4.48

#21819C on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.68

#21819C on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #21819C

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21819C	#FFFFFF	#000000	##000000
##21819C	1.00	4.48	4.68	4.68
#FFFFFF	4.48	1.00	21.00	21.00
#000000	4.68	21.00	1.00	1.00
##000000	4.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#717E9D

Deuteranopia (green-blind)

#61729C

Tritanopia (blue-blind)

#008A8A

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #21819c;
/* rgb */ color: rgb(33, 129, 156);
/* oklch */ color: oklch(56.2% 0.094 221.5);

Tailwind

colors: {
  custom: {
    50: '#71a5b9',
    500: '#21819c',
    950: '#000000',
  },
}

SCSS

$custom: #21819c;
$custom-light: #71a5b9;
$custom-dark: #000000;

JSON

{
  "hex": "#21819c",
  "rgb": {
    "r": 33,
    "g": 129,
    "b": 156
  },
  "hsl": {
    "h": 193.171,
    "s": 65.079,
    "l": 37.059
  },
  "oklch": {
    "l": 0.56185,
    "c": 0.09376,
    "h": 221.5
  },
  "luminance": 0.18424
}

Semantic roles & 50–950 ramp

primary

#21819C

secondary

#C16F58

accent

#6540E8

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#090F11

muted

#7B7F80

Preview Lab

Preview with #21819C

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

Preview Lab → · Contrast checker → · Palette generator →