#218EB3#218EB3

#218EB3 is a mid, moderate cyan. Relative luminance 0.229; OKLCH L 60.5% C 0.107 H 226.6°. Best body text is #000000 at 5.58:1 contrast (WCAG AA passes).

Color values

HEX	#218EB3
RGB	rgb(33, 142, 179)
HSL	hsl(195, 69%, 42%)
HSV	hsv(195, 82%, 70%)
CMYK	cmyk(81.6%, 20.7%, 0%, 29.8%)
CIE-LAB	lab(54.99, -16.58, -27.77)
CIE-LCH	lch(54.99, 32.34, 239.16°)
OKLab	oklab(60.5% -0.0739 -0.078)
OKLCH	oklch(60.5% 0.107 226.6)
XYZ	xyz(18.4335, 22.9217, 46.0919)
Luminance	0.2292 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#218EB3 #B34621

analogous

#21B38F #218EB3 #2145B3

triadic

#218EB3 #B3218E #8EB321

tetradic

#218EB3 #8F21B3 #B34621 #45B321

square

#218EB3 #8F21B3 #B34621 #45B321

split-complementary

#218EB3 #B32145 #B38F21

monochromatic

#0E3C4C #17657F #218EB3 #37B1DA #6BC5E4

Accessibility & contrast

On white

3.76

#218EB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.58

#218EB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #218EB3

5.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##218EB3	#FFFFFF	#000000	##000000
##218EB3	1.00	3.76	5.58	5.58
#FFFFFF	3.76	1.00	21.00	21.00
#000000	5.58	21.00	1.00	1.00
##000000	5.58	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7A8BB5

Deuteranopia (green-blind)

#677EB3

Tritanopia (blue-blind)

#00999A

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #218eb3;
/* rgb */ color: rgb(33, 142, 179);
/* oklch */ color: oklch(60.5% 0.107 226.6);

Tailwind

colors: {
  custom: {
    50: '#76afca',
    500: '#218eb3',
    950: '#000000',
  },
}

SCSS

$custom: #218eb3;
$custom-light: #76afca;
$custom-dark: #000000;

JSON

{
  "hex": "#218eb3",
  "rgb": {
    "r": 33,
    "g": 142,
    "b": 179
  },
  "hsl": {
    "h": 195.205,
    "s": 68.868,
    "l": 41.569
  },
  "oklch": {
    "l": 0.60498,
    "c": 0.10748,
    "h": 226.6
  },
  "luminance": 0.22924
}

Semantic roles & 50–950 ramp

primary

#218EB3

secondary

#CA7F66

accent

#693CEC

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #218EB3

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

Preview Lab → · Contrast checker → · Palette generator →