#66BBD2#66BBD2

#66BBD2 is a light, moderate cyan. Relative luminance 0.430; OKLCH L 74.7% C 0.089 H 217.5°. Best body text is #000000 at 9.60:1 contrast (WCAG AA passes).

Color values

HEX	#66BBD2
RGB	rgb(102, 187, 210)
HSL	hsl(193, 55%, 61%)
HSV	hsv(193, 51%, 82%)
CMYK	cmyk(51.4%, 11%, 0%, 17.6%)
CIE-LAB	lab(71.57, -19.47, -19.50)
CIE-LCH	lch(71.57, 27.55, 225.04°)
OKLab	oklab(74.72% -0.0703 -0.0539)
OKLCH	oklch(74.72% 0.089 217.5)
XYZ	xyz(34.8782, 43.0156, 67.4251)
Luminance	0.4302 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BBD2 #D27D66

analogous

#66D2B3 #66BBD2 #6685D2

triadic

#66BBD2 #D266BB #BBD266

tetradic

#66BBD2 #B366D2 #D27D66 #85D266

square

#66BBD2 #B366D2 #D27D66 #85D266

split-complementary

#66BBD2 #D26685 #D2B366

monochromatic

#2B7C93 #39A5C2 #66BBD2 #95D0E0 #C5E5EE

Accessibility & contrast

On white

2.19

#66BBD2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.60

#66BBD2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BBD2

9.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BBD2	#FFFFFF	#000000	##000000
##66BBD2	1.00	2.19	9.60	9.60
#FFFFFF	2.19	1.00	21.00	21.00
#000000	9.60	21.00	1.00	1.00
##000000	9.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ACB6D3

Deuteranopia (green-blind)

#9BAAD2

Tritanopia (blue-blind)

#1FC3C2

Achromatopsia (no color)

#AFAFAF

Design tokens & code

CSS

--color: #66bbd2;
/* rgb */ color: rgb(102, 187, 210);
/* oklch */ color: oklch(74.7% 0.089 217.5);

Tailwind

colors: {
  custom: {
    50: '#99cfdf',
    500: '#66bbd2',
    950: '#000000',
  },
}

SCSS

$custom: #66bbd2;
$custom-light: #99cfdf;
$custom-dark: #000000;

JSON

{
  "hex": "#66bbd2",
  "rgb": {
    "r": 102,
    "g": 187,
    "b": 210
  },
  "hsl": {
    "h": 192.778,
    "s": 54.545,
    "l": 61.176
  },
  "oklch": {
    "l": 0.7472,
    "c": 0.0886,
    "h": 217.5
  },
  "luminance": 0.43019
}

Semantic roles & 50–950 ramp

primary

#66BBD2

secondary

#DEBEB6

accent

#4523C2

background

#F9FCFD

surface

#F2F9FB

border

#CCD2D4

text

#0E1415

muted

#7E8283

Preview Lab

Preview with #66BBD2

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

Preview Lab → · Contrast checker → · Palette generator →