#21728F#21728F

#21728F is a mid, moderate cyan. Relative luminance 0.143; OKLCH L 51.8% C 0.088 H 226.7°. Best body text is #FFFFFF at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#21728F
RGB	rgb(33, 114, 143)
HSL	hsl(196, 63%, 35%)
HSV	hsv(196, 77%, 56%)
CMYK	cmyk(76.9%, 20.3%, 0%, 43.9%)
CIE-LAB	lab(44.72, -13.69, -22.71)
CIE-LCH	lch(44.72, 26.52, 238.91°)
OKLab	oklab(51.77% -0.0601 -0.0637)
OKLCH	oklch(51.77% 0.088 226.7)
XYZ	xyz(11.6004, 14.3398, 28.1377)
Luminance	0.1434 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21728F #8F3E21

analogous

#218F75 #21728F #213B8F

triadic

#21728F #8F2172 #728F21

tetradic

#21728F #75218F #8F3E21 #3B8F21

square

#21728F #75218F #8F3E21 #3B8F21

split-complementary

#21728F #8F213B #8F7521

monochromatic

#0A232C #164A5D #21728F #2C9AC1 #53B4D7

Accessibility & contrast

On white

5.43

#21728F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.87

#21728F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21728F

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21728F	#FFFFFF	#000000	##FFFFFF
##21728F	1.00	5.43	3.87	5.43
#FFFFFF	5.43	1.00	21.00	1.00
#000000	3.87	21.00	1.00	21.00
##FFFFFF	5.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#627090

Deuteranopia (green-blind)

#54658F

Tritanopia (blue-blind)

#007A7C

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #21728f;
/* rgb */ color: rgb(33, 114, 143);
/* oklch */ color: oklch(51.8% 0.088 226.7);

Tailwind

colors: {
  custom: {
    50: '#6e9ab0',
    500: '#21728f',
    950: '#000000',
  },
}

SCSS

$custom: #21728f;
$custom-light: #6e9ab0;
$custom-dark: #000000;

JSON

{
  "hex": "#21728f",
  "rgb": {
    "r": 33,
    "g": 114,
    "b": 143
  },
  "hsl": {
    "h": 195.818,
    "s": 62.5,
    "l": 34.51
  },
  "oklch": {
    "l": 0.51766,
    "c": 0.0876,
    "h": 226.7
  },
  "luminance": 0.14341
}

Semantic roles & 50–950 ramp

primary

#21728F

secondary

#BB6D51

accent

#6D42E6

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#080E10

muted

#7B7E7F

Preview Lab

Preview with #21728F

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

Preview Lab → · Contrast checker → · Palette generator →