#21B5BE#21B5BE

#21B5BE is a light, moderate teal. Relative luminance 0.371; OKLCH L 70.6% C 0.115 H 201.5°. Best body text is #000000 at 8.42:1 contrast (WCAG AA passes).

Color values

HEX	#21B5BE
RGB	rgb(33, 181, 190)
HSL	hsl(183, 70%, 44%)
HSV	hsv(183, 83%, 75%)
CMYK	cmyk(82.6%, 4.7%, 0%, 25.5%)
CIE-LAB	lab(67.34, -32.83, -15.08)
CIE-LCH	lch(67.34, 36.12, 204.67°)
OKLab	oklab(70.6% -0.1066 -0.0419)
OKLCH	oklch(70.6% 0.115 201.5)
XYZ	xyz(26.4411, 37.0854, 54.4698)
Luminance	0.3709 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21B5BE #BE2A21

analogous

#21BE78 #21B5BE #2167BE

triadic

#21B5BE #BE21B5 #B5BE21

tetradic

#21B5BE #7821BE #BE2A21 #67BE21

square

#21B5BE #7821BE #BE2A21 #67BE21

split-complementary

#21B5BE #BE2167 #BE7821

monochromatic

#0F5256 #18838A #21B5BE #3FD4DE #73E0E7

Accessibility & contrast

On white

2.49

#21B5BE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.42

#21B5BE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #21B5BE

8.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21B5BE	#FFFFFF	#000000	##000000
##21B5BE	1.00	2.49	8.42	8.42
#FFFFFF	2.49	1.00	21.00	21.00
#000000	8.42	21.00	1.00	1.00
##000000	8.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A6ADBF

Deuteranopia (green-blind)

#929DBF

Tritanopia (blue-blind)

#00BCB7

Achromatopsia (no color)

#A4A4A4

Design tokens & code

CSS

--color: #21b5be;
/* rgb */ color: rgb(33, 181, 190);
/* oklch */ color: oklch(70.6% 0.115 201.5);

Tailwind

colors: {
  custom: {
    50: '#7ccbd1',
    500: '#21b5be',
    950: '#000000',
  },
}

SCSS

$custom: #21b5be;
$custom-light: #7ccbd1;
$custom-dark: #000000;

JSON

{
  "hex": "#21b5be",
  "rgb": {
    "r": 33,
    "g": 181,
    "b": 190
  },
  "hsl": {
    "h": 183.439,
    "s": 70.404,
    "l": 43.725
  },
  "oklch": {
    "l": 0.70595,
    "c": 0.11452,
    "h": 201.5
  },
  "luminance": 0.37089
}

Semantic roles & 50–950 ramp

primary

#21B5BE

secondary

#CD736D

accent

#453BED

background

#F8FCFC

surface

#EFF8F9

border

#CAD1D2

text

#0B1314

muted

#7C8282

Preview Lab

Preview with #21B5BE

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

Preview Lab → · Contrast checker → · Palette generator →