#21A7BB#21A7BB

#21A7BB is a light, moderate teal. Relative luminance 0.315; OKLCH L 67.0% C 0.110 H 210.6°. Best body text is #000000 at 7.31:1 contrast (WCAG AA passes).

Color values

HEX#21A7BB
RGBrgb(33, 167, 187)
HSLhsl(188, 70%, 43%)
HSVhsv(188, 82%, 73%)
CMYKcmyk(82.4%, 10.7%, 0%, 26.7%)
CIE-LABlab(62.97, -26.94, -20.04)
CIE-LCHlch(62.97, 33.58, 216.64°)
OKLaboklab(67.02% -0.0945 -0.0559)
OKLCHoklch(67.02% 0.11 210.6)
XYZxyz(23.4116, 31.5456, 51.8591)
Luminance0.3155 (WCAG relative)
Temperaturecool
Familyteal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#21A7BB #BB3521
analogous
#21BB82 #21A7BB #215ABB
triadic
#21A7BB #BB21A7 #A7BB21
tetradic
#21A7BB #8221BB #BB3521 #5ABB21
square
#21A7BB #8221BB #BB3521 #5ABB21
split-complementary
#21A7BB #BB215A #BB8221
monochromatic
#0F4A53 #187987 #21A7BB #3DC8DD #71D7E6

Accessibility & contrast

On white

2.87
#21A7BB on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

7.31
#21A7BB on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #21A7BB
7.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##21A7BB#FFFFFF#000000##000000
##21A7BB1.002.877.317.31
#FFFFFF2.871.0021.0021.00
#0000007.3121.001.001.00
##0000007.3121.001.001.00

Color blindness preview

Protanopia (red-blind)
#97A1BC
Deuteranopia (green-blind)
#8292BB
Tritanopia (blue-blind)
#00B0AD
Achromatopsia (no color)
#989898

Design tokens & code

CSS
--color: #21a7bb;
/* rgb */ color: rgb(33, 167, 187);
/* oklch */ color: oklch(67.0% 0.110 210.6);
Tailwind
colors: {
  custom: {
    50: '#79c1cf',
    500: '#21a7bb',
    950: '#000000',
  },
}
SCSS
$custom: #21a7bb;
$custom-light: #79c1cf;
$custom-dark: #000000;
JSON
{
  "hex": "#21a7bb",
  "rgb": {
    "r": 33,
    "g": 167,
    "b": 187
  },
  "hsl": {
    "h": 187.792,
    "s": 70,
    "l": 43.137
  },
  "oklch": {
    "l": 0.67018,
    "c": 0.10981,
    "h": 210.6
  },
  "luminance": 0.31549
}

Semantic roles & 50–950 ramp

primary
#21A7BB
secondary
#CC786B
accent
#523BED
background
#F8FBFC
surface
#EFF7F9
border
#CAD0D2
text
#0B1213
muted
#7C8182

Preview Lab

Preview with #21A7BB

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

Preview Lab → · Contrast checker → · Palette generator →

#21A7BB Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva