#218FB3#218FB3

#218FB3 is a mid, moderate cyan. Relative luminance 0.232; OKLCH L 60.7% C 0.107 H 225.7°. Best body text is #000000 at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#218FB3
RGB	rgb(33, 143, 179)
HSL	hsl(195, 69%, 42%)
HSV	hsv(195, 82%, 70%)
CMYK	cmyk(81.6%, 20.1%, 0%, 29.8%)
CIE-LAB	lab(55.30, -17.12, -27.30)
CIE-LCH	lch(55.30, 32.22, 237.90°)
OKLab	oklab(60.75% -0.0748 -0.0767)
OKLCH	oklch(60.75% 0.107 225.7)
XYZ	xyz(18.5830, 23.2206, 46.1417)
Luminance	0.2322 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#218FB3 #B34521

analogous

#21B38E #218FB3 #2146B3

triadic

#218FB3 #B3218F #8FB321

tetradic

#218FB3 #8E21B3 #B34521 #46B321

square

#218FB3 #8E21B3 #B34521 #46B321

split-complementary

#218FB3 #B32146 #B38E21

monochromatic

#0E3C4C #17667F #218FB3 #37B2DA #6BC6E4

Accessibility & contrast

On white

3.72

#218FB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.64

#218FB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #218FB3

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##218FB3	#FFFFFF	#000000	##000000
##218FB3	1.00	3.72	5.64	5.64
#FFFFFF	3.72	1.00	21.00	21.00
#000000	5.64	21.00	1.00	1.00
##000000	5.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B8CB5

Deuteranopia (green-blind)

#687EB3

Tritanopia (blue-blind)

#009A9B

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #218fb3;
/* rgb */ color: rgb(33, 143, 179);
/* oklch */ color: oklch(60.7% 0.107 225.7);

Tailwind

colors: {
  custom: {
    50: '#76b0ca',
    500: '#218fb3',
    950: '#000000',
  },
}

SCSS

$custom: #218fb3;
$custom-light: #76b0ca;
$custom-dark: #000000;

JSON

{
  "hex": "#218fb3",
  "rgb": {
    "r": 33,
    "g": 143,
    "b": 179
  },
  "hsl": {
    "h": 194.795,
    "s": 68.868,
    "l": 41.569
  },
  "oklch": {
    "l": 0.60745,
    "c": 0.10715,
    "h": 225.7
  },
  "luminance": 0.23223
}

Semantic roles & 50–950 ramp

primary

#218FB3

secondary

#CA7F66

accent

#673CEC

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #218FB3

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

Preview Lab → · Contrast checker → · Palette generator →