#66BEFF#66BEFF

#66BEFF is a light, vivid cyan. Relative luminance 0.469; OKLCH L 77.3% C 0.126 H 242.8°. Best body text is #000000 at 10.37:1 contrast (WCAG AA passes).

Color values

HEX	#66BEFF
RGB	rgb(102, 190, 255)
HSL	hsl(205, 100%, 70%)
HSV	hsv(205, 60%, 100%)
CMYK	cmyk(60%, 25.5%, 0%, 0%)
CIE-LAB	lab(74.11, -7.74, -39.97)
CIE-LCH	lch(74.11, 40.71, 259.04°)
OKLab	oklab(77.3% -0.0578 -0.1123)
OKLCH	oklch(77.3% 0.126 242.8)
XYZ	xyz(41.9362, 46.8677, 101.4247)
Luminance	0.4687 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BEFF #FFA766

analogous

#66FFF3 #66BEFF #6672FF

triadic

#66BEFF #FF66BE #BEFF66

tetradic

#66BEFF #F366FF #FFA766 #72FF66

square

#66BEFF #F366FF #FFA766 #72FF66

split-complementary

#66BEFF #FF6672 #FFF366

monochromatic

#0087EB #29A4FF #66BEFF #A3D8FF #E0F2FF

Accessibility & contrast

On white

2.02

#66BEFF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.37

#66BEFF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BEFF

10.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BEFF	#FFFFFF	#000000	##000000
##66BEFF	1.00	2.02	10.37	10.37
#FFFFFF	2.02	1.00	21.00	21.00
#000000	10.37	21.00	1.00	1.00
##000000	10.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A1BFFF

Deuteranopia (green-blind)

#8CAFFE

Tritanopia (blue-blind)

#00CED4

Achromatopsia (no color)

#B6B6B6

Design tokens & code

CSS

--color: #66beff;
/* rgb */ color: rgb(102, 190, 255);
/* oklch */ color: oklch(77.3% 0.126 242.8);

Tailwind

colors: {
  custom: {
    50: '#9ed1ff',
    500: '#66beff',
    950: '#000000',
  },
}

SCSS

$custom: #66beff;
$custom-light: #9ed1ff;
$custom-dark: #000000;

JSON

{
  "hex": "#66beff",
  "rgb": {
    "r": 102,
    "g": 190,
    "b": 255
  },
  "hsl": {
    "h": 205.49,
    "s": 100,
    "l": 70
  },
  "oklch": {
    "l": 0.77298,
    "c": 0.12631,
    "h": 242.8
  },
  "luminance": 0.46872
}

Semantic roles & 50–950 ramp

primary

#66BEFF

secondary

#F6DDCB

accent

#6100E6

background

#FAFCFF

surface

#F4F9FF

border

#CED2D7

text

#0F1418

muted

#7F8286

Preview Lab

Preview with #66BEFF

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

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