#66CEF5#66CEF5

#66CEF5 is a light, moderate cyan. Relative luminance 0.536; OKLCH L 80.4% C 0.111 H 225.3°. Best body text is #000000 at 11.71:1 contrast (WCAG AA passes).

Color values

HEX	#66CEF5
RGB	rgb(102, 206, 245)
HSL	hsl(196, 88%, 68%)
HSV	hsv(196, 58%, 96%)
CMYK	cmyk(58.4%, 15.9%, 0%, 3.9%)
CIE-LAB	lab(78.20, -19.18, -28.28)
CIE-LCH	lch(78.20, 34.17, 235.86°)
OKLab	oklab(80.43% -0.0779 -0.0787)
OKLCH	oklch(80.43% 0.111 225.3)
XYZ	xyz(44.0258, 53.5557, 94.3856)
Luminance	0.5356 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CEF5 #F58D66

analogous

#66F5D5 #66CEF5 #6686F5

triadic

#66CEF5 #F566CE #CEF566

tetradic

#66CEF5 #D566F5 #F58D66 #86F566

square

#66CEF5 #D566F5 #F58D66 #86F566

split-complementary

#66CEF5 #F56686 #F5D566

monochromatic

#0E9DD3 #2DBCF1 #66CEF5 #9FE0F9 #D9F3FD

Accessibility & contrast

On white

1.79

#66CEF5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.71

#66CEF5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CEF5

11.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CEF5	#FFFFFF	#000000	##000000
##66CEF5	1.00	1.79	11.71	11.71
#FFFFFF	1.79	1.00	21.00	21.00
#000000	11.71	21.00	1.00	1.00
##000000	11.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B9CAF7

Deuteranopia (green-blind)

#A4BBF5

Tritanopia (blue-blind)

#00DADB

Achromatopsia (no color)

#C1C1C1

Design tokens & code

CSS

--color: #66cef5;
/* rgb */ color: rgb(102, 206, 245);
/* oklch */ color: oklch(80.4% 0.111 225.3);

Tailwind

colors: {
  custom: {
    50: '#9dddf8',
    500: '#66cef5',
    950: '#000000',
  },
}

SCSS

$custom: #66cef5;
$custom-light: #9dddf8;
$custom-dark: #000000;

JSON

{
  "hex": "#66cef5",
  "rgb": {
    "r": 102,
    "g": 206,
    "b": 245
  },
  "hsl": {
    "h": 196.364,
    "s": 87.73,
    "l": 68.039
  },
  "oklch": {
    "l": 0.80426,
    "c": 0.11074,
    "h": 225.3
  },
  "luminance": 0.5356
}

Semantic roles & 50–950 ramp

primary

#66CEF5

secondary

#CE5C31

accent

#3F01E4

background

#FCFEFF

surface

#F6FCFF

border

#D0D5D7

text

#0F1517

muted

#808485

Preview Lab

Preview with #66CEF5

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

Preview Lab → · Contrast checker → · Palette generator →