#218DBC#218DBC

#218DBC is a mid, moderate cyan. Relative luminance 0.230; OKLCH L 60.7% C 0.116 H 233.0°. Best body text is #000000 at 5.60:1 contrast (WCAG AA passes).

Color values

HEX	#218DBC
RGB	rgb(33, 141, 188)
HSL	hsl(198, 70%, 43%)
HSV	hsv(198, 82%, 74%)
CMYK	cmyk(82.4%, 25%, 0%, 26.3%)
CIE-LAB	lab(55.07, -12.85, -32.77)
CIE-LCH	lch(55.07, 35.20, 248.60°)
OKLab	oklab(60.69% -0.0697 -0.0925)
OKLCH	oklch(60.69% 0.116 233)
XYZ	xyz(19.2255, 23.0015, 50.9937)
Luminance	0.2300 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#218DBC #BC5021

analogous

#21BC9E #218DBC #213FBC

triadic

#218DBC #BC218D #8DBC21

tetradic

#218DBC #9E21BC #BC5021 #3FBC21

square

#218DBC #9E21BC #BC5021 #3FBC21

split-complementary

#218DBC #BC213F #BC9E21

monochromatic

#0F3F54 #186688 #218DBC #3DADDD #71C3E6

Accessibility & contrast

On white

3.75

#218DBC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.60

#218DBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #218DBC

5.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##218DBC	#FFFFFF	#000000	##000000
##218DBC	1.00	3.75	5.60	5.60
#FFFFFF	3.75	1.00	21.00	21.00
#000000	5.60	21.00	1.00	1.00
##000000	5.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#768CBE

Deuteranopia (green-blind)

#617EBB

Tritanopia (blue-blind)

#009A9D

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #218dbc;
/* rgb */ color: rgb(33, 141, 188);
/* oklch */ color: oklch(60.7% 0.116 233.0);

Tailwind

colors: {
  custom: {
    50: '#77aed0',
    500: '#218dbc',
    950: '#000000',
  },
}

SCSS

$custom: #218dbc;
$custom-light: #77aed0;
$custom-dark: #000000;

JSON

{
  "hex": "#218dbc",
  "rgb": {
    "r": 33,
    "g": 141,
    "b": 188
  },
  "hsl": {
    "h": 198.194,
    "s": 70.136,
    "l": 43.333
  },
  "oklch": {
    "l": 0.60692,
    "c": 0.1158,
    "h": 233
  },
  "luminance": 0.23004
}

Semantic roles & 50–950 ramp

primary

#218DBC

secondary

#CD896C

accent

#713BED

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0A1014

muted

#7C7F82

Preview Lab

Preview with #218DBC

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

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