#66BEE6#66BEE6

#66BEE6 is a light, moderate cyan. Relative luminance 0.454; OKLCH L 76.2% C 0.102 H 229.7°. Best body text is #000000 at 10.07:1 contrast (WCAG AA passes).

Color values

HEX	#66BEE6
RGB	rgb(102, 190, 230)
HSL	hsl(199, 72%, 65%)
HSV	hsv(199, 56%, 90%)
CMYK	cmyk(55.7%, 17.4%, 0%, 9.8%)
CIE-LAB	lab(73.13, -15.29, -27.99)
CIE-LCH	lch(73.13, 31.89, 241.36°)
OKLab	oklab(76.2% -0.0662 -0.0779)
OKLCH	oklch(76.2% 0.102 229.7)
XYZ	xyz(38.1704, 45.3614, 81.5917)
Luminance	0.4536 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BEE6 #E68E66

analogous

#66E6CE #66BEE6 #667EE6

triadic

#66BEE6 #E666BE #BEE666

tetradic

#66BEE6 #CE66E6 #E68E66 #7EE666

square

#66BEE6 #CE66E6 #E68E66 #7EE666

split-complementary

#66BEE6 #E6667E #E6CE66

monochromatic

#1D85B4 #31A8DD #66BEE6 #9BD4EF #CFEBF7

Accessibility & contrast

On white

2.08

#66BEE6 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.07

#66BEE6 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BEE6

10.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BEE6	#FFFFFF	#000000	##000000
##66BEE6	1.00	2.08	10.07	10.07
#FFFFFF	2.08	1.00	21.00	21.00
#000000	10.07	21.00	1.00	1.00
##000000	10.07	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AABBE8

Deuteranopia (green-blind)

#97AEE5

Tritanopia (blue-blind)

#00C9CB

Achromatopsia (no color)

#B4B4B4

Design tokens & code

CSS

--color: #66bee6;
/* rgb */ color: rgb(102, 190, 230);
/* oklch */ color: oklch(76.2% 0.102 229.7);

Tailwind

colors: {
  custom: {
    50: '#9bd1ee',
    500: '#66bee6',
    950: '#000000',
  },
}

SCSS

$custom: #66bee6;
$custom-light: #9bd1ee;
$custom-dark: #000000;

JSON

{
  "hex": "#66bee6",
  "rgb": {
    "r": 102,
    "g": 190,
    "b": 230
  },
  "hsl": {
    "h": 198.75,
    "s": 71.91,
    "l": 65.098
  },
  "oklch": {
    "l": 0.76201,
    "c": 0.10223,
    "h": 229.7
  },
  "luminance": 0.45365
}

Semantic roles & 50–950 ramp

primary

#66BEE6

secondary

#EACCBE

accent

#4E12D4

background

#FAFCFE

surface

#F3F9FD

border

#CDD2D5

text

#0F1416

muted

#7F8284

Preview Lab

Preview with #66BEE6

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

Preview Lab → · Contrast checker → · Palette generator →