#21A4BB#21A4BB

#21A4BB is a light, moderate teal. Relative luminance 0.305; OKLCH L 66.3% C 0.109 H 213.1°. Best body text is #000000 at 7.09:1 contrast (WCAG AA passes).

Color values

HEX#21A4BB
RGBrgb(33, 164, 187)
HSLhsl(189, 70%, 43%)
HSVhsv(189, 82%, 73%)
CMYKcmyk(82.4%, 12.3%, 0%, 26.7%)
CIE-LABlab(62.05, -25.43, -21.44)
CIE-LCHlch(62.05, 33.27, 220.13°)
OKLaboklab(66.28% -0.0917 -0.0599)
OKLCHoklch(66.28% 0.109 213.1)
XYZxyz(22.8684, 30.4592, 51.6780)
Luminance0.3046 (WCAG relative)
Temperaturecool
Familyteal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#21A4BB #BB3821
analogous
#21BB85 #21A4BB #2157BB
triadic
#21A4BB #BB21A4 #A4BB21
tetradic
#21A4BB #8521BB #BB3821 #57BB21
square
#21A4BB #8521BB #BB3821 #57BB21
split-complementary
#21A4BB #BB2157 #BB8521
monochromatic
#0F4953 #187687 #21A4BB #3DC5DD #71D4E6

Accessibility & contrast

On white

2.96
#21A4BB on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

7.09
#21A4BB on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #21A4BB
7.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##21A4BB#FFFFFF#000000##000000
##21A4BB1.002.967.097.09
#FFFFFF2.961.0021.0021.00
#0000007.0921.001.001.00
##0000007.0921.001.001.00

Color blindness preview

Protanopia (red-blind)
#939EBC
Deuteranopia (green-blind)
#7F90BB
Tritanopia (blue-blind)
#00ADAB
Achromatopsia (no color)
#969696

Design tokens & code

CSS
--color: #21a4bb;
/* rgb */ color: rgb(33, 164, 187);
/* oklch */ color: oklch(66.3% 0.109 213.1);
Tailwind
colors: {
  custom: {
    50: '#79bfcf',
    500: '#21a4bb',
    950: '#000000',
  },
}
SCSS
$custom: #21a4bb;
$custom-light: #79bfcf;
$custom-dark: #000000;
JSON
{
  "hex": "#21a4bb",
  "rgb": {
    "r": 33,
    "g": 164,
    "b": 187
  },
  "hsl": {
    "h": 188.961,
    "s": 70,
    "l": 43.137
  },
  "oklch": {
    "l": 0.66278,
    "c": 0.10948,
    "h": 213.1
  },
  "luminance": 0.30462
}

Semantic roles & 50–950 ramp

primary
#21A4BB
secondary
#CC7A6B
accent
#563BED
background
#F8FBFC
surface
#EFF7F9
border
#CAD0D2
text
#0B1213
muted
#7C8182

Preview Lab

Preview with #21A4BB

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

Preview Lab → · Contrast checker → · Palette generator →

#21A4BB Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva