#218DAB#218DAB

#218DAB is a mid, moderate cyan. Relative luminance 0.223; OKLCH L 59.9% C 0.102 H 221.7°. Best body text is #000000 at 5.46:1 contrast (WCAG AA passes).

Color values

HEX	#218DAB
RGB	rgb(33, 141, 171)
HSL	hsl(193, 68%, 40%)
HSV	hsv(193, 81%, 67%)
CMYK	cmyk(80.7%, 17.5%, 0%, 32.9%)
CIE-LAB	lab(54.36, -18.81, -24.17)
CIE-LCH	lch(54.36, 30.63, 232.11°)
OKLab	oklab(59.88% -0.076 -0.0677)
OKLCH	oklch(59.88% 0.102 221.7)
XYZ	xyz(17.4997, 22.3112, 41.9044)
Luminance	0.2231 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#218DAB #AB3F21

analogous

#21AB84 #218DAB #2148AB

triadic

#218DAB #AB218D #8DAB21

tetradic

#218DAB #8421AB #AB3F21 #48AB21

square

#218DAB #8421AB #AB3F21 #48AB21

split-complementary

#218DAB #AB2148 #AB8421

monochromatic

#0D3844 #176378 #218DAB #32B3D7 #65C6E1

Accessibility & contrast

On white

3.84

#218DAB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.46

#218DAB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #218DAB

5.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##218DAB	#FFFFFF	#000000	##000000
##218DAB	1.00	3.84	5.46	5.46
#FFFFFF	3.84	1.00	21.00	21.00
#000000	5.46	21.00	1.00	1.00
##000000	5.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B89AD

Deuteranopia (green-blind)

#697CAB

Tritanopia (blue-blind)

#009697

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #218dab;
/* rgb */ color: rgb(33, 141, 171);
/* oklch */ color: oklch(59.9% 0.102 221.7);

Tailwind

colors: {
  custom: {
    50: '#74aec4',
    500: '#218dab',
    950: '#000000',
  },
}

SCSS

$custom: #218dab;
$custom-light: #74aec4;
$custom-dark: #000000;

JSON

{
  "hex": "#218dab",
  "rgb": {
    "r": 33,
    "g": 141,
    "b": 171
  },
  "hsl": {
    "h": 193.043,
    "s": 67.647,
    "l": 40
  },
  "oklch": {
    "l": 0.5988,
    "c": 0.10183,
    "h": 221.7
  },
  "luminance": 0.22313
}

Semantic roles & 50–950 ramp

primary

#218DAB

secondary

#C77761

accent

#633DEB

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #218DAB

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

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