#21817B#21817B

#21817B is a mid, moderate teal. Relative luminance 0.175; OKLCH L 54.8% C 0.086 H 188.7°. Best body text is #FFFFFF at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#21817B
RGB	rgb(33, 129, 123)
HSL	hsl(176, 59%, 32%)
HSV	hsv(176, 74%, 51%)
CMYK	cmyk(74.4%, 0%, 4.7%, 49.4%)
CIE-LAB	lab(48.83, -28.23, -4.64)
CIE-LCH	lch(48.83, 28.61, 189.33°)
OKLab	oklab(54.84% -0.0848 -0.013)
OKLCH	oklch(54.84% 0.086 188.7)
XYZ	xyz(12.0509, 17.4525, 21.4686)
Luminance	0.1745 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21817B #812127

analogous

#21814B #21817B #215781

triadic

#21817B #7B2181 #817B21

tetradic

#21817B #4B2181 #812127 #578121

square

#21817B #4B2181 #812127 #578121

split-complementary

#21817B #812157 #814B21

monochromatic

#08201E #15504D #21817B #2DB2A9 #4BD1C9

Accessibility & contrast

On white

4.68

#21817B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.49

#21817B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21817B

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21817B	#FFFFFF	#000000	##FFFFFF
##21817B	1.00	4.68	4.49	4.68
#FFFFFF	4.68	1.00	21.00	1.00
#000000	4.49	21.00	1.00	21.00
##FFFFFF	4.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#797A7B

Deuteranopia (green-blind)

#6C707C

Tritanopia (blue-blind)

#00847F

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #21817b;
/* rgb */ color: rgb(33, 129, 123);
/* oklch */ color: oklch(54.8% 0.086 188.7);

Tailwind

colors: {
  custom: {
    50: '#6da6a1',
    500: '#21817b',
    950: '#000000',
  },
}

SCSS

$custom: #21817b;
$custom-light: #6da6a1;
$custom-dark: #000000;

JSON

{
  "hex": "#21817b",
  "rgb": {
    "r": 33,
    "g": 129,
    "b": 123
  },
  "hsl": {
    "h": 176.25,
    "s": 59.259,
    "l": 31.765
  },
  "oklch": {
    "l": 0.54841,
    "c": 0.08582,
    "h": 188.7
  },
  "luminance": 0.17454
}

Semantic roles & 50–950 ramp

primary

#21817B

secondary

#B44A51

accent

#454FE2

background

#F7FAF9

surface

#EDF4F2

border

#C8CECC

text

#080F0E

muted

#7B7F7E

Preview Lab

Preview with #21817B

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

Preview Lab → · Contrast checker → · Palette generator →