#21A5BB#21A5BB

#21A5BB is a light, moderate teal. Relative luminance 0.308; OKLCH L 66.5% C 0.110 H 212.3°. Best body text is #000000 at 7.16:1 contrast (WCAG AA passes).

Color values

HEX#21A5BB
RGBrgb(33, 165, 187)
HSLhsl(189, 70%, 43%)
HSVhsv(189, 82%, 73%)
CMYKcmyk(82.4%, 11.8%, 0%, 26.7%)
CIE-LABlab(62.35, -25.94, -20.97)
CIE-LCHlch(62.35, 33.36, 218.96°)
OKLaboklab(66.52% -0.0926 -0.0585)
OKLCHoklch(66.52% 0.11 212.3)
XYZxyz(23.0481, 30.8185, 51.7379)
Luminance0.3082 (WCAG relative)
Temperaturecool
Familyteal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#21A5BB #BB3721
analogous
#21BB84 #21A5BB #2158BB
triadic
#21A5BB #BB21A5 #A5BB21
tetradic
#21A5BB #8421BB #BB3721 #58BB21
square
#21A5BB #8421BB #BB3721 #58BB21
split-complementary
#21A5BB #BB2158 #BB8421
monochromatic
#0F4953 #187787 #21A5BB #3DC6DD #71D5E6

Accessibility & contrast

On white

2.93
#21A5BB on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

7.16
#21A5BB on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #21A5BB
7.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##21A5BB#FFFFFF#000000##000000
##21A5BB1.002.937.167.16
#FFFFFF2.931.0021.0021.00
#0000007.1621.001.001.00
##0000007.1621.001.001.00

Color blindness preview

Protanopia (red-blind)
#949FBC
Deuteranopia (green-blind)
#8090BB
Tritanopia (blue-blind)
#00AEAC
Achromatopsia (no color)
#979797

Design tokens & code

CSS
--color: #21a5bb;
/* rgb */ color: rgb(33, 165, 187);
/* oklch */ color: oklch(66.5% 0.110 212.3);
Tailwind
colors: {
  custom: {
    50: '#79c0cf',
    500: '#21a5bb',
    950: '#000000',
  },
}
SCSS
$custom: #21a5bb;
$custom-light: #79c0cf;
$custom-dark: #000000;
JSON
{
  "hex": "#21a5bb",
  "rgb": {
    "r": 33,
    "g": 165,
    "b": 187
  },
  "hsl": {
    "h": 188.571,
    "s": 70,
    "l": 43.137
  },
  "oklch": {
    "l": 0.66524,
    "c": 0.10956,
    "h": 212.3
  },
  "luminance": 0.30821
}

Semantic roles & 50–950 ramp

primary
#21A5BB
secondary
#CC796B
accent
#543BED
background
#F8FBFC
surface
#EFF7F9
border
#CAD0D2
text
#0B1213
muted
#7C8182

Preview Lab

Preview with #21A5BB

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

Preview Lab → · Contrast checker → · Palette generator →

#21A5BB Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva