#66BDFE#66BDFE

#66BDFE is a light, vivid cyan. Relative luminance 0.464; OKLCH L 77.0% C 0.126 H 243.0°. Best body text is #000000 at 10.28:1 contrast (WCAG AA passes).

Color values

HEX	#66BDFE
RGB	rgb(102, 189, 254)
HSL	hsl(206, 99%, 70%)
HSV	hsv(206, 60%, 100%)
CMYK	cmyk(59.8%, 25.6%, 0%, 0.4%)
CIE-LAB	lab(73.79, -7.51, -39.93)
CIE-LCH	lch(73.79, 40.63, 259.35°)
OKLab	oklab(77.03% -0.0571 -0.1122)
OKLCH	oklch(77.03% 0.126 243)
XYZ	xyz(41.5598, 46.3718, 100.5072)
Luminance	0.4638 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BDFE #FEA766

analogous

#66FEF3 #66BDFE #6671FE

triadic

#66BDFE #FE66BD #BDFE66

tetradic

#66BDFE #F366FE #FEA766 #71FE66

square

#66BDFE #F366FE #FEA766 #71FE66

split-complementary

#66BDFE #FE6671 #FEF366

monochromatic

#0285E8 #29A3FE #66BDFE #A3D7FE #E0F1FF

Accessibility & contrast

On white

2.04

#66BDFE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.28

#66BDFE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BDFE

10.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BDFE	#FFFFFF	#000000	##000000
##66BDFE	1.00	2.04	10.28	10.28
#FFFFFF	2.04	1.00	21.00	21.00
#000000	10.28	21.00	1.00	1.00
##000000	10.28	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A0BEFF

Deuteranopia (green-blind)

#8CAFFD

Tritanopia (blue-blind)

#00CDD3

Achromatopsia (no color)

#B5B5B5

Design tokens & code

CSS

--color: #66bdfe;
/* rgb */ color: rgb(102, 189, 254);
/* oklch */ color: oklch(77.0% 0.126 243.0);

Tailwind

colors: {
  custom: {
    50: '#9dd0ff',
    500: '#66bdfe',
    950: '#000000',
  },
}

SCSS

$custom: #66bdfe;
$custom-light: #9dd0ff;
$custom-dark: #000000;

JSON

{
  "hex": "#66bdfe",
  "rgb": {
    "r": 102,
    "g": 189,
    "b": 254
  },
  "hsl": {
    "h": 205.658,
    "s": 98.701,
    "l": 69.804
  },
  "oklch": {
    "l": 0.77032,
    "c": 0.12588,
    "h": 243
  },
  "luminance": 0.46376
}

Semantic roles & 50–950 ramp

primary

#66BDFE

secondary

#F5DDCA

accent

#6200E6

background

#FAFCFF

surface

#F4F9FF

border

#CED2D7

text

#0F1418

muted

#7F8286

Preview Lab

Preview with #66BDFE

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

Preview Lab → · Contrast checker → · Palette generator →