#218BB4#218BB4

#218BB4 is a mid, moderate cyan. Relative luminance 0.221; OKLCH L 59.8% C 0.110 H 229.8°. Best body text is #000000 at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#218BB4
RGB	rgb(33, 139, 180)
HSL	hsl(197, 69%, 42%)
HSV	hsv(197, 82%, 71%)
CMYK	cmyk(81.7%, 22.8%, 0%, 29.4%)
CIE-LAB	lab(54.11, -14.58, -29.71)
CIE-LCH	lch(54.11, 33.09, 243.86°)
OKLab	oklab(59.81% -0.0707 -0.0836)
OKLCH	oklch(59.81% 0.11 229.8)
XYZ	xyz(18.0947, 22.0816, 46.4797)
Luminance	0.2208 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#218BB4 #B44A21

analogous

#21B494 #218BB4 #2141B4

triadic

#218BB4 #B4218B #8BB421

tetradic

#218BB4 #9421B4 #B44A21 #41B421

square

#218BB4 #9421B4 #B44A21 #41B421

split-complementary

#218BB4 #B42141 #B49421

monochromatic

#0E3B4D #186380 #218BB4 #38ADDA #6BC2E4

Accessibility & contrast

On white

3.88

#218BB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.42

#218BB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #218BB4

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##218BB4	#FFFFFF	#000000	##000000
##218BB4	1.00	3.88	5.42	5.42
#FFFFFF	3.88	1.00	21.00	21.00
#000000	5.42	21.00	1.00	1.00
##000000	5.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7689B6

Deuteranopia (green-blind)

#637BB3

Tritanopia (blue-blind)

#009699

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #218bb4;
/* rgb */ color: rgb(33, 139, 180);
/* oklch */ color: oklch(59.8% 0.110 229.8);

Tailwind

colors: {
  custom: {
    50: '#76adca',
    500: '#218bb4',
    950: '#000000',
  },
}

SCSS

$custom: #218bb4;
$custom-light: #76adca;
$custom-dark: #000000;

JSON

{
  "hex": "#218bb4",
  "rgb": {
    "r": 33,
    "g": 139,
    "b": 180
  },
  "hsl": {
    "h": 196.735,
    "s": 69.014,
    "l": 41.765
  },
  "oklch": {
    "l": 0.59809,
    "c": 0.10951,
    "h": 229.8
  },
  "luminance": 0.22084
}

Semantic roles & 50–950 ramp

primary

#218BB4

secondary

#CA8267

accent

#6D3CEC

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #218BB4

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

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