#218AB4#218AB4

#218AB4 is a mid, moderate cyan. Relative luminance 0.218; OKLCH L 59.6% C 0.110 H 230.6°. Best body text is #000000 at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#218AB4
RGB	rgb(33, 138, 180)
HSL	hsl(197, 69%, 42%)
HSV	hsv(197, 82%, 71%)
CMYK	cmyk(81.7%, 23.3%, 0%, 29.4%)
CIE-LAB	lab(53.81, -14.02, -30.18)
CIE-LCH	lch(53.81, 33.28, 245.08°)
OKLab	oklab(59.57% -0.0698 -0.085)
OKLCH	oklch(59.57% 0.11 230.6)
XYZ	xyz(17.9505, 21.7933, 46.4316)
Luminance	0.2180 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#218AB4 #B44B21

analogous

#21B495 #218AB4 #2141B4

triadic

#218AB4 #B4218A #8AB421

tetradic

#218AB4 #9521B4 #B44B21 #41B421

square

#218AB4 #9521B4 #B44B21 #41B421

split-complementary

#218AB4 #B42141 #B49521

monochromatic

#0E3B4D #186280 #218AB4 #38ACDA #6BC2E4

Accessibility & contrast

On white

3.92

#218AB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.36

#218AB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #218AB4

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##218AB4	#FFFFFF	#000000	##000000
##218AB4	1.00	3.92	5.36	5.36
#FFFFFF	3.92	1.00	21.00	21.00
#000000	5.36	21.00	1.00	1.00
##000000	5.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7588B6

Deuteranopia (green-blind)

#617BB3

Tritanopia (blue-blind)

#009598

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #218ab4;
/* rgb */ color: rgb(33, 138, 180);
/* oklch */ color: oklch(59.6% 0.110 230.6);

Tailwind

colors: {
  custom: {
    50: '#76acca',
    500: '#218ab4',
    950: '#000000',
  },
}

SCSS

$custom: #218ab4;
$custom-light: #76acca;
$custom-dark: #000000;

JSON

{
  "hex": "#218ab4",
  "rgb": {
    "r": 33,
    "g": 138,
    "b": 180
  },
  "hsl": {
    "h": 197.143,
    "s": 69.014,
    "l": 41.765
  },
  "oklch": {
    "l": 0.59565,
    "c": 0.10997,
    "h": 230.6
  },
  "luminance": 0.21796
}

Semantic roles & 50–950 ramp

primary

#218AB4

secondary

#CA8367

accent

#6E3CEC

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #218AB4

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

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