#218A9F#218A9F

#218A9F is a mid, moderate cyan. Relative luminance 0.210; OKLCH L 58.6% C 0.095 H 214.8°. Best body text is #000000 at 5.20:1 contrast (WCAG AA passes).

Color values

HEX	#218A9F
RGB	rgb(33, 138, 159)
HSL	hsl(190, 66%, 38%)
HSV	hsv(190, 79%, 62%)
CMYK	cmyk(79.2%, 13.2%, 0%, 37.6%)
CIE-LAB	lab(52.95, -21.29, -19.42)
CIE-LCH	lch(52.95, 28.82, 222.37°)
OKLab	oklab(58.6% -0.0779 -0.0542)
OKLCH	oklch(58.6% 0.095 214.8)
XYZ	xyz(15.9710, 21.0015, 36.0061)
Luminance	0.2100 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#218A9F #9F3621

analogous

#219F75 #218A9F #214B9F

triadic

#218A9F #9F218A #8A9F21

tetradic

#218A9F #75219F #9F3621 #4B9F21

square

#218A9F #75219F #9F3621 #4B9F21

split-complementary

#218A9F #9F214B #9F7521

monochromatic

#0C323A #165E6C #218A9F #2CB6D2 #5DC8DD

Accessibility & contrast

On white

4.04

#218A9F on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.20

#218A9F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #218A9F

5.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##218A9F	#FFFFFF	#000000	##000000
##218A9F	1.00	4.04	5.20	5.20
#FFFFFF	4.04	1.00	21.00	21.00
#000000	5.20	21.00	1.00	1.00
##000000	5.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B85A0

Deuteranopia (green-blind)

#6A799F

Tritanopia (blue-blind)

#009291

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #218a9f;
/* rgb */ color: rgb(33, 138, 159);
/* oklch */ color: oklch(58.6% 0.095 214.8);

Tailwind

colors: {
  custom: {
    50: '#72acbb',
    500: '#218a9f',
    950: '#000000',
  },
}

SCSS

$custom: #218a9f;
$custom-light: #72acbb;
$custom-dark: #000000;

JSON

{
  "hex": "#218a9f",
  "rgb": {
    "r": 33,
    "g": 138,
    "b": 159
  },
  "hsl": {
    "h": 190,
    "s": 65.625,
    "l": 37.647
  },
  "oklch": {
    "l": 0.58595,
    "c": 0.09495,
    "h": 214.8
  },
  "luminance": 0.21003
}

Semantic roles & 50–950 ramp

primary

#218A9F

secondary

#C26B5A

accent

#5B3FE9

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#091011

muted

#7B7F80

Preview Lab

Preview with #218A9F

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

Preview Lab → · Contrast checker → · Palette generator →