#66BDFA#66BDFA

#66BDFA is a light, vivid cyan. Relative luminance 0.461; OKLCH L 76.8% C 0.122 H 241.3°. Best body text is #000000 at 10.22:1 contrast (WCAG AA passes).

Color values

HEX	#66BDFA
RGB	rgb(102, 189, 250)
HSL	hsl(205, 94%, 69%)
HSV	hsv(205, 59%, 98%)
CMYK	cmyk(59.2%, 24.4%, 0%, 2%)
CIE-LAB	lab(73.62, -8.74, -38.03)
CIE-LCH	lch(73.62, 39.02, 257.06°)
OKLab	oklab(76.85% -0.0584 -0.1067)
OKLCH	oklch(76.85% 0.122 241.3)
XYZ	xyz(40.9260, 46.1182, 97.1689)
Luminance	0.4612 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BDFA #FAA366

analogous

#66FAED #66BDFA #6673FA

triadic

#66BDFA #FA66BD #BDFA66

tetradic

#66BDFA #ED66FA #FAA366 #73FA66

square

#66BDFA #ED66FA #FAA366 #73FA66

split-complementary

#66BDFA #FA6673 #FAED66

monochromatic

#0786DE #2BA3F8 #66BDFA #A1D7FC #DDF0FE

Accessibility & contrast

On white

2.05

#66BDFA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.22

#66BDFA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BDFA

10.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BDFA	#FFFFFF	#000000	##000000
##66BDFA	1.00	2.05	10.22	10.22
#FFFFFF	2.05	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)

#A2BDFD

Deuteranopia (green-blind)

#8EAEF9

Tritanopia (blue-blind)

#00CCD2

Achromatopsia (no color)

#B5B5B5

Design tokens & code

CSS

--color: #66bdfa;
/* rgb */ color: rgb(102, 189, 250);
/* oklch */ color: oklch(76.8% 0.122 241.3);

Tailwind

colors: {
  custom: {
    50: '#9dd0fc',
    500: '#66bdfa',
    950: '#000000',
  },
}

SCSS

$custom: #66bdfa;
$custom-light: #9dd0fc;
$custom-dark: #000000;

JSON

{
  "hex": "#66bdfa",
  "rgb": {
    "r": 102,
    "g": 189,
    "b": 250
  },
  "hsl": {
    "h": 204.73,
    "s": 93.671,
    "l": 69.02
  },
  "oklch": {
    "l": 0.76848,
    "c": 0.12162,
    "h": 241.3
  },
  "luminance": 0.46122
}

Semantic roles & 50–950 ramp

primary

#66BDFA

secondary

#F4DAC8

accent

#5F00E6

background

#FAFCFF

surface

#F4F9FF

border

#CED2D7

text

#0F1417

muted

#7F8285

Preview Lab

Preview with #66BDFA

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

Preview Lab → · Contrast checker → · Palette generator →