#217DA4#217DA4

#217DA4 is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 55.6% C 0.102 H 231.6°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#217DA4
RGB	rgb(33, 125, 164)
HSL	hsl(198, 66%, 39%)
HSV	hsv(198, 80%, 64%)
CMYK	cmyk(79.9%, 23.8%, 0%, 35.7%)
CIE-LAB	lab(49.09, -12.43, -28.28)
CIE-LCH	lch(49.09, 30.89, 246.27°)
OKLab	oklab(55.57% -0.0632 -0.0796)
OKLCH	oklch(55.57% 0.102 231.6)
XYZ	xyz(14.6589, 17.6691, 37.7526)
Luminance	0.1767 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#217DA4 #A44821

analogous

#21A489 #217DA4 #213BA4

triadic

#217DA4 #A4217D #7DA421

tetradic

#217DA4 #8921A4 #A44821 #3BA421

square

#217DA4 #8921A4 #A44821 #3BA421

split-complementary

#217DA4 #A4213B #A48921

monochromatic

#0C2F3E #175671 #217DA4 #2DA3D5 #60B9DF

Accessibility & contrast

On white

4.63

#217DA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#217DA4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #217DA4

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##217DA4	#FFFFFF	#000000	##FFFFFF
##217DA4	1.00	4.63	4.53	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#697CA6

Deuteranopia (green-blind)

#586FA3

Tritanopia (blue-blind)

#00888A

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #217da4;
/* rgb */ color: rgb(33, 125, 164);
/* oklch */ color: oklch(55.6% 0.102 231.6);

Tailwind

colors: {
  custom: {
    50: '#72a2bf',
    500: '#217da4',
    950: '#000000',
  },
}

SCSS

$custom: #217da4;
$custom-light: #72a2bf;
$custom-dark: #000000;

JSON

{
  "hex": "#217da4",
  "rgb": {
    "r": 33,
    "g": 125,
    "b": 164
  },
  "hsl": {
    "h": 197.863,
    "s": 66.497,
    "l": 38.627
  },
  "oklch": {
    "l": 0.55567,
    "c": 0.10165,
    "h": 231.6
  },
  "luminance": 0.17671
}

Semantic roles & 50–950 ramp

primary

#217DA4

secondary

#C47C5D

accent

#713EE9

background

#F7FAFB

surface

#EDF3F7

border

#C8CDD0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #217DA4

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

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