#218AA4#218AA4

#218AA4 is a mid, moderate cyan. Relative luminance 0.212; OKLCH L 58.8% C 0.098 H 219.1°. Best body text is #000000 at 5.24:1 contrast (WCAG AA passes).

Color values

HEX	#218AA4
RGB	rgb(33, 138, 164)
HSL	hsl(192, 66%, 39%)
HSV	hsv(192, 80%, 64%)
CMYK	cmyk(79.9%, 15.9%, 0%, 35.7%)
CIE-LAB	lab(53.14, -19.60, -22.01)
CIE-LCH	lch(53.14, 29.47, 228.32°)
OKLab	oklab(58.81% -0.0759 -0.0616)
OKLCH	oklch(58.81% 0.098 219.1)
XYZ	xyz(16.4137, 21.1786, 38.3376)
Luminance	0.2118 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#218AA4 #A43B21

analogous

#21A47C #218AA4 #2149A4

triadic

#218AA4 #A4218A #8AA421

tetradic

#218AA4 #7C21A4 #A43B21 #49A421

square

#218AA4 #7C21A4 #A43B21 #49A421

split-complementary

#218AA4 #A42149 #A47C21

monochromatic

#0C343E #175F71 #218AA4 #2DB4D5 #60C6DF

Accessibility & contrast

On white

4.01

#218AA4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.24

#218AA4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #218AA4

5.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##218AA4	#FFFFFF	#000000	##000000
##218AA4	1.00	4.01	5.24	5.24
#FFFFFF	4.01	1.00	21.00	21.00
#000000	5.24	21.00	1.00	1.00
##000000	5.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7A86A5

Deuteranopia (green-blind)

#6879A4

Tritanopia (blue-blind)

#009392

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #218aa4;
/* rgb */ color: rgb(33, 138, 164);
/* oklch */ color: oklch(58.8% 0.098 219.1);

Tailwind

colors: {
  custom: {
    50: '#73acbf',
    500: '#218aa4',
    950: '#000000',
  },
}

SCSS

$custom: #218aa4;
$custom-light: #73acbf;
$custom-dark: #000000;

JSON

{
  "hex": "#218aa4",
  "rgb": {
    "r": 33,
    "g": 138,
    "b": 164
  },
  "hsl": {
    "h": 191.908,
    "s": 66.497,
    "l": 38.627
  },
  "oklch": {
    "l": 0.58814,
    "c": 0.09773,
    "h": 219.1
  },
  "luminance": 0.21181
}

Semantic roles & 50–950 ramp

primary

#218AA4

secondary

#C4715D

accent

#603EE9

background

#F7FAFB

surface

#EEF4F7

border

#C9CED0

text

#091012

muted

#7B7F81

Preview Lab

Preview with #218AA4

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

Preview Lab → · Contrast checker → · Palette generator →