#218DB4#218DB4

#218DB4 is a mid, moderate cyan. Relative luminance 0.227; OKLCH L 60.3% C 0.109 H 228.1°. Best body text is #000000 at 5.53:1 contrast (WCAG AA passes).

Color values

HEX	#218DB4
RGB	rgb(33, 141, 180)
HSL	hsl(196, 69%, 42%)
HSV	hsv(196, 82%, 71%)
CMYK	cmyk(81.7%, 21.7%, 0%, 29.4%)
CIE-LAB	lab(54.73, -15.68, -28.75)
CIE-LCH	lch(54.73, 32.75, 241.39°)
OKLab	oklab(60.3% -0.0726 -0.0809)
OKLCH	oklch(60.3% 0.109 228.1)
XYZ	xyz(18.3869, 22.6661, 46.5771)
Luminance	0.2267 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#218DB4 #B44821

analogous

#21B492 #218DB4 #2144B4

triadic

#218DB4 #B4218D #8DB421

tetradic

#218DB4 #9221B4 #B44821 #44B421

square

#218DB4 #9221B4 #B44821 #44B421

split-complementary

#218DB4 #B42144 #B49221

monochromatic

#0E3C4D #186480 #218DB4 #38AFDA #6BC4E4

Accessibility & contrast

On white

3.79

#218DB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.53

#218DB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #218DB4

5.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##218DB4	#FFFFFF	#000000	##000000
##218DB4	1.00	3.79	5.53	5.53
#FFFFFF	3.79	1.00	21.00	21.00
#000000	5.53	21.00	1.00	1.00
##000000	5.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#788BB6

Deuteranopia (green-blind)

#657DB3

Tritanopia (blue-blind)

#00989A

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #218db4;
/* rgb */ color: rgb(33, 141, 180);
/* oklch */ color: oklch(60.3% 0.109 228.1);

Tailwind

colors: {
  custom: {
    50: '#76aeca',
    500: '#218db4',
    950: '#000000',
  },
}

SCSS

$custom: #218db4;
$custom-light: #76aeca;
$custom-dark: #000000;

JSON

{
  "hex": "#218db4",
  "rgb": {
    "r": 33,
    "g": 141,
    "b": 180
  },
  "hsl": {
    "h": 195.918,
    "s": 69.014,
    "l": 41.765
  },
  "oklch": {
    "l": 0.603,
    "c": 0.10866,
    "h": 228.1
  },
  "luminance": 0.22668
}

Semantic roles & 50–950 ramp

primary

#218DB4

secondary

#CA8167

accent

#6B3CEC

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #218DB4

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

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