#21B9BD#21B9BD

#21B9BD is a light, moderate teal. Relative luminance 0.387; OKLCH L 71.5% C 0.116 H 197.7°. Best body text is #000000 at 8.74:1 contrast (WCAG AA passes).

Color values

HEX#21B9BD
RGBrgb(33, 185, 189)
HSLhsl(182, 70%, 44%)
HSVhsv(182, 83%, 74%)
CMYKcmyk(82.5%, 2.1%, 0%, 25.9%)
CIE-LABlab(68.53, -35.02, -12.74)
CIE-LCHlch(68.53, 37.27, 199.99°)
OKLaboklab(71.55% -0.1108 -0.0354)
OKLCHoklch(71.55% 0.116 197.7)
XYZxyz(27.1572, 38.6919, 54.1712)
Luminance0.3870 (WCAG relative)
Temperaturecool
Familyteal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#21B9BD #BD2521
analogous
#21BD73 #21B9BD #216BBD
triadic
#21B9BD #BD21B9 #B9BD21
tetradic
#21B9BD #7321BD #BD2521 #6BBD21
square
#21B9BD #7321BD #BD2521 #6BBD21
split-complementary
#21B9BD #BD216B #BD7321
monochromatic
#0F5355 #188689 #21B9BD #3ED9DD #72E3E6

Accessibility & contrast

On white

2.40
#21B9BD on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.74
#21B9BD on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #21B9BD
8.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##21B9BD#FFFFFF#000000##000000
##21B9BD1.002.408.748.74
#FFFFFF2.401.0021.0021.00
#0000008.7421.001.001.00
##0000008.7421.001.001.00

Color blindness preview

Protanopia (red-blind)
#ABB0BE
Deuteranopia (green-blind)
#96A1BE
Tritanopia (blue-blind)
#00C0BA
Achromatopsia (no color)
#A7A7A7

Design tokens & code

CSS
--color: #21b9bd;
/* rgb */ color: rgb(33, 185, 189);
/* oklch */ color: oklch(71.5% 0.116 197.7);
Tailwind
colors: {
  custom: {
    50: '#7cced0',
    500: '#21b9bd',
    950: '#000000',
  },
}
SCSS
$custom: #21b9bd;
$custom-light: #7cced0;
$custom-dark: #000000;
JSON
{
  "hex": "#21b9bd",
  "rgb": {
    "r": 33,
    "g": 185,
    "b": 189
  },
  "hsl": {
    "h": 181.538,
    "s": 70.27,
    "l": 43.529
  },
  "oklch": {
    "l": 0.71548,
    "c": 0.11632,
    "h": 197.7
  },
  "luminance": 0.38695
}

Semantic roles & 50–950 ramp

primary
#21B9BD
secondary
#CD6F6D
accent
#3F3BED
background
#F8FCFC
surface
#F0F9F9
border
#CBD2D2
text
#0B1414
muted
#7C8282

Preview Lab

Preview with #21B9BD

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

Preview Lab → · Contrast checker → · Palette generator →

#21B9BD Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva