#21728B#21728B

#21728B is a mid, moderate cyan. Relative luminance 0.142; OKLCH L 51.6% C 0.084 H 223.0°. Best body text is #FFFFFF at 5.46:1 contrast (WCAG AA passes).

Color values

HEX	#21728B
RGB	rgb(33, 114, 139)
HSL	hsl(194, 62%, 34%)
HSV	hsv(194, 76%, 55%)
CMYK	cmyk(76.3%, 18%, 0%, 45.5%)
CIE-LAB	lab(44.55, -15.10, -20.59)
CIE-LCH	lch(44.55, 25.53, 233.73°)
OKLab	oklab(51.58% -0.0617 -0.0576)
OKLCH	oklch(51.58% 0.084 223)
XYZ	xyz(11.3028, 14.2207, 26.5703)
Luminance	0.1422 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21728B #8B3A21

analogous

#218B6F #21728B #213D8B

triadic

#21728B #8B2172 #728B21

tetradic

#21728B #6F218B #8B3A21 #3D8B21

square

#21728B #6F218B #8B3A21 #3D8B21

split-complementary

#21728B #8B213D #8B6F21

monochromatic

#0A2128 #15495A #21728B #2D9BBC #51B6D6

Accessibility & contrast

On white

5.46

#21728B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.84

#21728B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21728B

5.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21728B	#FFFFFF	#000000	##FFFFFF
##21728B	1.00	5.46	3.84	5.46
#FFFFFF	5.46	1.00	21.00	1.00
#000000	3.84	21.00	1.00	21.00
##FFFFFF	5.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#646F8C

Deuteranopia (green-blind)

#55658B

Tritanopia (blue-blind)

#007A7A

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #21728b;
/* rgb */ color: rgb(33, 114, 139);
/* oklch */ color: oklch(51.6% 0.084 223.0);

Tailwind

colors: {
  custom: {
    50: '#6d9aad',
    500: '#21728b',
    950: '#000000',
  },
}

SCSS

$custom: #21728b;
$custom-light: #6d9aad;
$custom-dark: #000000;

JSON

{
  "hex": "#21728b",
  "rgb": {
    "r": 33,
    "g": 114,
    "b": 139
  },
  "hsl": {
    "h": 194.151,
    "s": 61.628,
    "l": 33.725
  },
  "oklch": {
    "l": 0.51576,
    "c": 0.08445,
    "h": 223
  },
  "luminance": 0.14222
}

Semantic roles & 50–950 ramp

primary

#21728B

secondary

#B9684F

accent

#6943E5

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#080E10

muted

#7B7E7F

Preview Lab

Preview with #21728B

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

Preview Lab → · Contrast checker → · Palette generator →