#66BFEB#66BFEB

#66BFEB is a light, moderate cyan. Relative luminance 0.461; OKLCH L 76.6% C 0.106 H 231.9°. Best body text is #000000 at 10.22:1 contrast (WCAG AA passes).

Color values

HEX	#66BFEB
RGB	rgb(102, 191, 235)
HSL	hsl(200, 77%, 66%)
HSV	hsv(200, 57%, 92%)
CMYK	cmyk(56.6%, 18.7%, 0%, 7.8%)
CIE-LAB	lab(73.60, -14.34, -29.97)
CIE-LCH	lch(73.60, 33.23, 244.44°)
OKLab	oklab(76.64% -0.0655 -0.0836)
OKLCH	oklch(76.64% 0.106 231.9)
XYZ	xyz(39.1000, 46.0809, 85.4151)
Luminance	0.4608 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BFEB #EB9266

analogous

#66EBD5 #66BFEB #667CEB

triadic

#66BFEB #EB66BF #BFEB66

tetradic

#66BFEB #D566EB #EB9266 #7CEB66

square

#66BFEB #D566EB #EB9266 #7CEB66

split-complementary

#66BFEB #EB667C #EBD566

monochromatic

#1987BE #30A8E4 #66BFEB #9CD6F2 #D2ECF9

Accessibility & contrast

On white

2.06

#66BFEB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.22

#66BFEB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BFEB

10.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BFEB	#FFFFFF	#000000	##000000
##66BFEB	1.00	2.06	10.22	10.22
#FFFFFF	2.06	1.00	21.00	21.00
#000000	10.22	21.00	1.00	1.00
##000000	10.22	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A9BDED

Deuteranopia (green-blind)

#97AFEA

Tritanopia (blue-blind)

#00CBCD

Achromatopsia (no color)

#B5B5B5

Design tokens & code

CSS

--color: #66bfeb;
/* rgb */ color: rgb(102, 191, 235);
/* oklch */ color: oklch(76.6% 0.106 231.9);

Tailwind

colors: {
  custom: {
    50: '#9bd2f1',
    500: '#66bfeb',
    950: '#000000',
  },
}

SCSS

$custom: #66bfeb;
$custom-light: #9bd2f1;
$custom-dark: #000000;

JSON

{
  "hex": "#66bfeb",
  "rgb": {
    "r": 102,
    "g": 191,
    "b": 235
  },
  "hsl": {
    "h": 199.85,
    "s": 76.879,
    "l": 66.078
  },
  "oklch": {
    "l": 0.76636,
    "c": 0.10619,
    "h": 231.9
  },
  "luminance": 0.46085
}

Semantic roles & 50–950 ramp

primary

#66BFEB

secondary

#ECCFC1

accent

#500CD9

background

#FAFCFE

surface

#F4F9FD

border

#CED2D5

text

#0F1416

muted

#7F8284

Preview Lab

Preview with #66BFEB

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

Preview Lab → · Contrast checker → · Palette generator →