#217B8F#217B8F

#217B8F is a mid, moderate cyan. Relative luminance 0.165; OKLCH L 54.1% C 0.086 H 216.3°. Best body text is #FFFFFF at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#217B8F
RGB	rgb(33, 123, 143)
HSL	hsl(191, 63%, 35%)
HSV	hsv(191, 77%, 56%)
CMYK	cmyk(76.9%, 14%, 0%, 43.9%)
CIE-LAB	lab(47.59, -18.69, -18.29)
CIE-LCH	lch(47.59, 26.15, 224.39°)
OKLab	oklab(54.07% -0.0694 -0.0511)
OKLCH	oklch(54.07% 0.086 216.3)
XYZ	xyz(12.6660, 16.4709, 28.4929)
Luminance	0.1647 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#217B8F #8F3521

analogous

#218F6C #217B8F #21448F

triadic

#217B8F #8F217B #7B8F21

tetradic

#217B8F #6C218F #8F3521 #448F21

square

#217B8F #6C218F #8F3521 #448F21

split-complementary

#217B8F #8F2144 #8F6C21

monochromatic

#0A252C #16505D #217B8F #2CA6C1 #53BFD7

Accessibility & contrast

On white

4.89

#217B8F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.29

#217B8F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #217B8F

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##217B8F	#FFFFFF	#000000	##FFFFFF
##217B8F	1.00	4.89	4.29	4.89
#FFFFFF	4.89	1.00	21.00	1.00
#000000	4.29	21.00	1.00	21.00
##FFFFFF	4.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E7790

Deuteranopia (green-blind)

#5F6C8F

Tritanopia (blue-blind)

#008281

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #217b8f;
/* rgb */ color: rgb(33, 123, 143);
/* oklch */ color: oklch(54.1% 0.086 216.3);

Tailwind

colors: {
  custom: {
    50: '#6ea1af',
    500: '#217b8f',
    950: '#000000',
  },
}

SCSS

$custom: #217b8f;
$custom-light: #6ea1af;
$custom-dark: #000000;

JSON

{
  "hex": "#217b8f",
  "rgb": {
    "r": 33,
    "g": 123,
    "b": 143
  },
  "hsl": {
    "h": 190.909,
    "s": 62.5,
    "l": 34.51
  },
  "oklch": {
    "l": 0.5407,
    "c": 0.08618,
    "h": 216.3
  },
  "luminance": 0.16472
}

Semantic roles & 50–950 ramp

primary

#217B8F

secondary

#BB6451

accent

#6042E6

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#080F10

muted

#7B7E7F

Preview Lab

Preview with #217B8F

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

Preview Lab → · Contrast checker → · Palette generator →