#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
RGB	rgb(33, 165, 187)
HSL	hsl(189, 70%, 43%)
HSV	hsv(189, 82%, 73%)
CMYK	cmyk(82.4%, 11.8%, 0%, 26.7%)
CIE-LAB	lab(62.35, -25.94, -20.97)
CIE-LCH	lch(62.35, 33.36, 218.96°)
OKLab	oklab(66.52% -0.0926 -0.0585)
OKLCH	oklch(66.52% 0.11 212.3)
XYZ	xyz(23.0481, 30.8185, 51.7379)
Luminance	0.3082 (WCAG relative)
Temperature	cool
Family	teal

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
##21A5BB	1.00	2.93	7.16	7.16
#FFFFFF	2.93	1.00	21.00	21.00
#000000	7.16	21.00	1.00	1.00
##000000	7.16	21.00	1.00	1.00

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 →