#66C7FB#66C7FB

#66C7FB is a light, moderate cyan. Relative luminance 0.506; OKLCH L 79.1% C 0.118 H 234.4°. Best body text is #000000 at 11.13:1 contrast (WCAG AA passes).

Color values

HEX	#66C7FB
RGB	rgb(102, 199, 251)
HSL	hsl(201, 95%, 69%)
HSV	hsv(201, 59%, 98%)
CMYK	cmyk(59.4%, 20.7%, 0%, 1.6%)
CIE-LAB	lab(76.46, -13.76, -34.18)
CIE-LCH	lch(76.46, 36.85, 248.07°)
OKLab	oklab(79.11% -0.0685 -0.0956)
OKLCH	oklch(79.11% 0.118 234.4)
XYZ	xyz(43.3089, 50.6325, 98.7388)
Luminance	0.5064 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C7FB #FB9A66

analogous

#66FBE5 #66C7FB #667DFB

triadic

#66C7FB #FB66C7 #C7FB66

tetradic

#66C7FB #E566FB #FB9A66 #7DFB66

square

#66C7FB #E566FB #FB9A66 #7DFB66

split-complementary

#66C7FB #FB667D #FBE566

monochromatic

#0694E1 #2AB1F9 #66C7FB #A2DDFD #DDF3FE

Accessibility & contrast

On white

1.89

#66C7FB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.13

#66C7FB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C7FB

11.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C7FB	#FFFFFF	#000000	##000000
##66C7FB	1.00	1.89	11.13	11.13
#FFFFFF	1.89	1.00	21.00	21.00
#000000	11.13	21.00	1.00	1.00
##000000	11.13	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AEC5FE

Deuteranopia (green-blind)

#99B6FA

Tritanopia (blue-blind)

#00D5D8

Achromatopsia (no color)

#BDBDBD

Design tokens & code

CSS

--color: #66c7fb;
/* rgb */ color: rgb(102, 199, 251);
/* oklch */ color: oklch(79.1% 0.118 234.4);

Tailwind

colors: {
  custom: {
    50: '#9dd8fc',
    500: '#66c7fb',
    950: '#000000',
  },
}

SCSS

$custom: #66c7fb;
$custom-light: #9dd8fc;
$custom-dark: #000000;

JSON

{
  "hex": "#66c7fb",
  "rgb": {
    "r": 102,
    "g": 199,
    "b": 251
  },
  "hsl": {
    "h": 200.94,
    "s": 94.904,
    "l": 69.216
  },
  "oklch": {
    "l": 0.79109,
    "c": 0.11758,
    "h": 234.4
  },
  "luminance": 0.50637
}

Semantic roles & 50–950 ramp

primary

#66C7FB

secondary

#D56A30

accent

#5000E6

background

#FCFEFF

surface

#F6FBFF

border

#D0D4D7

text

#0F1417

muted

#808385

Preview Lab

Preview with #66C7FB

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

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