#218BB3#218BB3

#218BB3 is a mid, moderate cyan. Relative luminance 0.220; OKLCH L 59.8% C 0.109 H 229.2°. Best body text is #000000 at 5.41:1 contrast (WCAG AA passes).

Color values

HEX	#218BB3
RGB	rgb(33, 139, 179)
HSL	hsl(196, 69%, 42%)
HSV	hsv(196, 82%, 70%)
CMYK	cmyk(81.6%, 22.3%, 0%, 29.8%)
CIE-LAB	lab(54.07, -14.93, -29.20)
CIE-LCH	lch(54.07, 32.80, 242.92°)
OKLab	oklab(59.76% -0.0711 -0.0822)
OKLCH	oklch(59.76% 0.109 229.2)
XYZ	xyz(17.9932, 22.0410, 45.9451)
Luminance	0.2204 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#218BB3 #B34921

analogous

#21B392 #218BB3 #2142B3

triadic

#218BB3 #B3218B #8BB321

tetradic

#218BB3 #9221B3 #B34921 #42B321

square

#218BB3 #9221B3 #B34921 #42B321

split-complementary

#218BB3 #B32142 #B39221

monochromatic

#0E3B4C #17637F #218BB3 #37ADDA #6BC3E4

Accessibility & contrast

On white

3.88

#218BB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.41

#218BB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #218BB3

5.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##218BB3	#FFFFFF	#000000	##000000
##218BB3	1.00	3.88	5.41	5.41
#FFFFFF	3.88	1.00	21.00	21.00
#000000	5.41	21.00	1.00	1.00
##000000	5.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7689B5

Deuteranopia (green-blind)

#637BB2

Tritanopia (blue-blind)

#009698

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #218bb3;
/* rgb */ color: rgb(33, 139, 179);
/* oklch */ color: oklch(59.8% 0.109 229.2);

Tailwind

colors: {
  custom: {
    50: '#76adca',
    500: '#218bb3',
    950: '#000000',
  },
}

SCSS

$custom: #218bb3;
$custom-light: #76adca;
$custom-dark: #000000;

JSON

{
  "hex": "#218bb3",
  "rgb": {
    "r": 33,
    "g": 139,
    "b": 179
  },
  "hsl": {
    "h": 196.438,
    "s": 68.868,
    "l": 41.569
  },
  "oklch": {
    "l": 0.59761,
    "c": 0.10864,
    "h": 229.2
  },
  "luminance": 0.22043
}

Semantic roles & 50–950 ramp

primary

#218BB3

secondary

#CA8166

accent

#6C3CEC

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #218BB3

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

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