#21A6BB#21A6BB

#21A6BB is a light, moderate teal. Relative luminance 0.312; OKLCH L 66.8% C 0.110 H 211.4°. Best body text is #000000 at 7.24:1 contrast (WCAG AA passes).

Color values

HEX#21A6BB
RGBrgb(33, 166, 187)
HSLhsl(188, 70%, 43%)
HSVhsv(188, 82%, 73%)
CMYKcmyk(82.4%, 11.2%, 0%, 26.7%)
CIE-LABlab(62.66, -26.44, -20.51)
CIE-LCHlch(62.66, 33.46, 217.80°)
OKLaboklab(66.77% -0.0936 -0.0572)
OKLCHoklch(66.77% 0.11 211.4)
XYZxyz(23.2291, 31.1807, 51.7983)
Luminance0.3118 (WCAG relative)
Temperaturecool
Familyteal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#21A6BB #BB3621
analogous
#21BB83 #21A6BB #2159BB
triadic
#21A6BB #BB21A6 #A6BB21
tetradic
#21A6BB #8321BB #BB3621 #59BB21
square
#21A6BB #8321BB #BB3621 #59BB21
split-complementary
#21A6BB #BB2159 #BB8321
monochromatic
#0F4A53 #187887 #21A6BB #3DC7DD #71D6E6

Accessibility & contrast

On white

2.90
#21A6BB on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

7.24
#21A6BB on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #21A6BB
7.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##21A6BB#FFFFFF#000000##000000
##21A6BB1.002.907.247.24
#FFFFFF2.901.0021.0021.00
#0000007.2421.001.001.00
##0000007.2421.001.001.00

Color blindness preview

Protanopia (red-blind)
#95A0BC
Deuteranopia (green-blind)
#8191BB
Tritanopia (blue-blind)
#00AFAC
Achromatopsia (no color)
#989898

Design tokens & code

CSS
--color: #21a6bb;
/* rgb */ color: rgb(33, 166, 187);
/* oklch */ color: oklch(66.8% 0.110 211.4);
Tailwind
colors: {
  custom: {
    50: '#79c0cf',
    500: '#21a6bb',
    950: '#000000',
  },
}
SCSS
$custom: #21a6bb;
$custom-light: #79c0cf;
$custom-dark: #000000;
JSON
{
  "hex": "#21a6bb",
  "rgb": {
    "r": 33,
    "g": 166,
    "b": 187
  },
  "hsl": {
    "h": 188.182,
    "s": 70,
    "l": 43.137
  },
  "oklch": {
    "l": 0.66771,
    "c": 0.10967,
    "h": 211.4
  },
  "luminance": 0.31184
}

Semantic roles & 50–950 ramp

primary
#21A6BB
secondary
#CC796B
accent
#533BED
background
#F8FBFC
surface
#EFF7F9
border
#CAD0D2
text
#0B1213
muted
#7C8182

Preview Lab

Preview with #21A6BB

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

Preview Lab → · Contrast checker → · Palette generator →

#21A6BB Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva