#66BFEF#66BFEF

#66BFEF is a light, moderate cyan. Relative luminance 0.463; OKLCH L 76.8% C 0.110 H 234.3°. Best body text is #000000 at 10.26:1 contrast (WCAG AA passes).

Color values

HEX	#66BFEF
RGB	rgb(102, 191, 239)
HSL	hsl(201, 81%, 67%)
HSV	hsv(201, 57%, 94%)
CMYK	cmyk(57.3%, 20.1%, 0%, 6.3%)
CIE-LAB	lab(73.75, -13.14, -31.90)
CIE-LCH	lch(73.75, 34.50, 247.61°)
OKLab	oklab(76.81% -0.0641 -0.0891)
OKLCH	oklch(76.81% 0.11 234.3)
XYZ	xyz(39.6844, 46.3147, 88.4929)
Luminance	0.4632 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BFEF #EF9666

analogous

#66EFDB #66BFEF #667BEF

triadic

#66BFEF #EF66BF #BFEF66

tetradic

#66BFEF #DB66EF #EF9666 #7BEF66

square

#66BFEF #DB66EF #EF9666 #7BEF66

split-complementary

#66BFEF #EF667B #EFDB66

monochromatic

#1588C6 #2FA8E9 #66BFEF #9DD6F5 #D5EDFB

Accessibility & contrast

On white

2.05

#66BFEF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.26

#66BFEF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BFEF

10.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BFEF	#FFFFFF	#000000	##000000
##66BFEF	1.00	2.05	10.26	10.26
#FFFFFF	2.05	1.00	21.00	21.00
#000000	10.26	21.00	1.00	1.00
##000000	10.26	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A8BDF1

Deuteranopia (green-blind)

#95AFEE

Tritanopia (blue-blind)

#00CCCF

Achromatopsia (no color)

#B5B5B5

Design tokens & code

CSS

--color: #66bfef;
/* rgb */ color: rgb(102, 191, 239);
/* oklch */ color: oklch(76.8% 0.110 234.3);

Tailwind

colors: {
  custom: {
    50: '#9cd2f4',
    500: '#66bfef',
    950: '#000000',
  },
}

SCSS

$custom: #66bfef;
$custom-light: #9cd2f4;
$custom-dark: #000000;

JSON

{
  "hex": "#66bfef",
  "rgb": {
    "r": 102,
    "g": 191,
    "b": 239
  },
  "hsl": {
    "h": 201.022,
    "s": 81.065,
    "l": 66.863
  },
  "oklch": {
    "l": 0.76806,
    "c": 0.10976,
    "h": 234.3
  },
  "luminance": 0.46318
}

Semantic roles & 50–950 ramp

primary

#66BFEF

secondary

#EED2C2

accent

#5308DD

background

#FAFCFE

surface

#F4F9FD

border

#CED2D5

text

#0F1417

muted

#7F8285

Preview Lab

Preview with #66BFEF

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

Preview Lab → · Contrast checker → · Palette generator →