#218ABC#218ABC

#218ABC is a mid, moderate cyan. Relative luminance 0.221; OKLCH L 60.0% C 0.118 H 235.3°. Best body text is #000000 at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#218ABC
RGB	rgb(33, 138, 188)
HSL	hsl(199, 70%, 43%)
HSV	hsv(199, 82%, 74%)
CMYK	cmyk(82.4%, 26.6%, 0%, 26.3%)
CIE-LAB	lab(54.16, -11.16, -34.20)
CIE-LCH	lch(54.16, 35.97, 251.93°)
OKLab	oklab(59.97% -0.0669 -0.0966)
OKLCH	oklch(59.97% 0.118 235.3)
XYZ	xyz(18.7891, 22.1288, 50.8482)
Luminance	0.2213 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#218ABC #BC5321

analogous

#21BCA0 #218ABC #213CBC

triadic

#218ABC #BC218A #8ABC21

tetradic

#218ABC #A021BC #BC5321 #3CBC21

square

#218ABC #A021BC #BC5321 #3CBC21

split-complementary

#218ABC #BC213C #BCA021

monochromatic

#0F3E54 #186488 #218ABC #3DA9DD #71C0E6

Accessibility & contrast

On white

3.87

#218ABC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.43

#218ABC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #218ABC

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##218ABC	#FFFFFF	#000000	##000000
##218ABC	1.00	3.87	5.43	5.43
#FFFFFF	3.87	1.00	21.00	21.00
#000000	5.43	21.00	1.00	1.00
##000000	5.43	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7289BE

Deuteranopia (green-blind)

#5D7BBB

Tritanopia (blue-blind)

#00979B

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #218abc;
/* rgb */ color: rgb(33, 138, 188);
/* oklch */ color: oklch(60.0% 0.118 235.3);

Tailwind

colors: {
  custom: {
    50: '#77acd0',
    500: '#218abc',
    950: '#000000',
  },
}

SCSS

$custom: #218abc;
$custom-light: #77acd0;
$custom-dark: #000000;

JSON

{
  "hex": "#218abc",
  "rgb": {
    "r": 33,
    "g": 138,
    "b": 188
  },
  "hsl": {
    "h": 199.355,
    "s": 70.136,
    "l": 43.333
  },
  "oklch": {
    "l": 0.59966,
    "c": 0.11756,
    "h": 235.3
  },
  "luminance": 0.22131
}

Semantic roles & 50–950 ramp

primary

#218ABC

secondary

#CD8B6C

accent

#743BED

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0A1014

muted

#7C7F82

Preview Lab

Preview with #218ABC

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

Preview Lab → · Contrast checker → · Palette generator →