#21818B#21818B

#21818B is a mid, moderate teal. Relative luminance 0.179; OKLCH L 55.5% C 0.086 H 205.4°. Best body text is #FFFFFF at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#21818B
RGB	rgb(33, 129, 139)
HSL	hsl(186, 62%, 34%)
HSV	hsv(186, 76%, 55%)
CMYK	cmyk(76.3%, 7.2%, 0%, 45.5%)
CIE-LAB	lab(49.36, -23.21, -13.24)
CIE-LCH	lch(49.36, 26.72, 209.71°)
OKLab	oklab(55.45% -0.0774 -0.0368)
OKLCH	oklch(55.45% 0.086 205.4)
XYZ	xyz(13.1356, 17.8863, 27.1812)
Luminance	0.1789 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21818B #8B2B21

analogous

#218B60 #21818B #214C8B

triadic

#21818B #8B2181 #818B21

tetradic

#21818B #60218B #8B2B21 #4C8B21

square

#21818B #60218B #8B2B21 #4C8B21

split-complementary

#21818B #8B214C #8B6021

monochromatic

#0A2528 #15535A #21818B #2DAFBC #51C9D6

Accessibility & contrast

On white

4.59

#21818B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.58

#21818B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #21818B

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21818B	#FFFFFF	#000000	##FFFFFF
##21818B	1.00	4.59	4.58	4.59
#FFFFFF	4.59	1.00	21.00	1.00
#000000	4.58	21.00	1.00	21.00
##FFFFFF	4.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#767C8C

Deuteranopia (green-blind)

#67718B

Tritanopia (blue-blind)

#008784

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #21818b;
/* rgb */ color: rgb(33, 129, 139);
/* oklch */ color: oklch(55.5% 0.086 205.4);

Tailwind

colors: {
  custom: {
    50: '#6fa6ac',
    500: '#21818b',
    950: '#000000',
  },
}

SCSS

$custom: #21818b;
$custom-light: #6fa6ac;
$custom-dark: #000000;

JSON

{
  "hex": "#21818b",
  "rgb": {
    "r": 33,
    "g": 129,
    "b": 139
  },
  "hsl": {
    "h": 185.66,
    "s": 61.628,
    "l": 33.725
  },
  "oklch": {
    "l": 0.5545,
    "c": 0.08571,
    "h": 205.4
  },
  "luminance": 0.17888
}

Semantic roles & 50–950 ramp

primary

#21818B

secondary

#B9594F

accent

#5243E5

background

#F7FAFA

surface

#EDF4F4

border

#C8CECE

text

#080F10

muted

#7B7F7F

Preview Lab

Preview with #21818B

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

Preview Lab → · Contrast checker → · Palette generator →