#218DB1#218DB1

#218DB1 is a mid, moderate cyan. Relative luminance 0.225; OKLCH L 60.2% C 0.106 H 226.1°. Best body text is #000000 at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#218DB1
RGB	rgb(33, 141, 177)
HSL	hsl(195, 69%, 41%)
HSV	hsv(195, 81%, 69%)
CMYK	cmyk(81.4%, 20.3%, 0%, 30.6%)
CIE-LAB	lab(54.60, -16.73, -27.23)
CIE-LCH	lch(54.60, 31.96, 238.43°)
OKLab	oklab(60.16% -0.0737 -0.0765)
OKLCH	oklch(60.16% 0.106 226.1)
XYZ	xyz(18.0846, 22.5451, 44.9850)
Luminance	0.2255 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#218DB1 #B14521

analogous

#21B18D #218DB1 #2145B1

triadic

#218DB1 #B1218D #8DB121

tetradic

#218DB1 #8D21B1 #B14521 #45B121

square

#218DB1 #8D21B1 #B14521 #45B121

split-complementary

#218DB1 #B12145 #B18D21

monochromatic

#0E3B4A #17647D #218DB1 #36B1D9 #69C5E3

Accessibility & contrast

On white

3.81

#218DB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.51

#218DB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #218DB1

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##218DB1	#FFFFFF	#000000	##000000
##218DB1	1.00	3.81	5.51	5.51
#FFFFFF	3.81	1.00	21.00	21.00
#000000	5.51	21.00	1.00	1.00
##000000	5.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#798AB3

Deuteranopia (green-blind)

#677DB1

Tritanopia (blue-blind)

#009799

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #218db1;
/* rgb */ color: rgb(33, 141, 177);
/* oklch */ color: oklch(60.2% 0.106 226.1);

Tailwind

colors: {
  custom: {
    50: '#75aec8',
    500: '#218db1',
    950: '#000000',
  },
}

SCSS

$custom: #218db1;
$custom-light: #75aec8;
$custom-dark: #000000;

JSON

{
  "hex": "#218db1",
  "rgb": {
    "r": 33,
    "g": 141,
    "b": 177
  },
  "hsl": {
    "h": 195,
    "s": 68.571,
    "l": 41.176
  },
  "oklch": {
    "l": 0.60158,
    "c": 0.10623,
    "h": 226.1
  },
  "luminance": 0.22547
}

Semantic roles & 50–950 ramp

primary

#218DB1

secondary

#C97E65

accent

#683CEB

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #218DB1

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

Preview Lab → · Contrast checker → · Palette generator →