#218CBC#218CBC

#218CBC is a mid, moderate cyan. Relative luminance 0.227; OKLCH L 60.5% C 0.116 H 233.8°. Best body text is #000000 at 5.54:1 contrast (WCAG AA passes).

Color values

HEX	#218CBC
RGB	rgb(33, 140, 188)
HSL	hsl(199, 70%, 43%)
HSV	hsv(199, 82%, 74%)
CMYK	cmyk(82.4%, 25.5%, 0%, 26.3%)
CIE-LAB	lab(54.77, -12.29, -33.25)
CIE-LCH	lch(54.77, 35.45, 249.72°)
OKLab	oklab(60.45% -0.0688 -0.0939)
OKLCH	oklch(60.45% 0.116 233.8)
XYZ	xyz(19.0787, 22.7079, 50.9447)
Luminance	0.2271 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#218CBC #BC5121

analogous

#21BC9E #218CBC #213EBC

triadic

#218CBC #BC218C #8CBC21

tetradic

#218CBC #9E21BC #BC5121 #3EBC21

square

#218CBC #9E21BC #BC5121 #3EBC21

split-complementary

#218CBC #BC213E #BC9E21

monochromatic

#0F3E54 #186588 #218CBC #3DACDD #71C2E6

Accessibility & contrast

On white

3.79

#218CBC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.54

#218CBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #218CBC

5.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##218CBC	#FFFFFF	#000000	##000000
##218CBC	1.00	3.79	5.54	5.54
#FFFFFF	3.79	1.00	21.00	21.00
#000000	5.54	21.00	1.00	1.00
##000000	5.54	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#748BBE

Deuteranopia (green-blind)

#607DBB

Tritanopia (blue-blind)

#00999C

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #218cbc;
/* rgb */ color: rgb(33, 140, 188);
/* oklch */ color: oklch(60.5% 0.116 233.8);

Tailwind

colors: {
  custom: {
    50: '#77add0',
    500: '#218cbc',
    950: '#000000',
  },
}

SCSS

$custom: #218cbc;
$custom-light: #77add0;
$custom-dark: #000000;

JSON

{
  "hex": "#218cbc",
  "rgb": {
    "r": 33,
    "g": 140,
    "b": 188
  },
  "hsl": {
    "h": 198.581,
    "s": 70.136,
    "l": 43.333
  },
  "oklch": {
    "l": 0.6045,
    "c": 0.11637,
    "h": 233.8
  },
  "luminance": 0.2271
}

Semantic roles & 50–950 ramp

primary

#218CBC

secondary

#CD8A6C

accent

#723BED

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0A1014

muted

#7C7F82

Preview Lab

Preview with #218CBC

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

Preview Lab → · Contrast checker → · Palette generator →