#66E5FC#66E5FC

#66E5FC is a very light, moderate teal. Relative luminance 0.659; OKLCH L 85.9% C 0.116 H 211.3°. Best body text is #000000 at 14.18:1 contrast (WCAG AA passes).

Color values

HEX	#66E5FC
RGB	rgb(102, 229, 252)
HSL	hsl(189, 96%, 69%)
HSV	hsv(189, 60%, 99%)
CMYK	cmyk(59.5%, 9.1%, 0%, 1.2%)
CIE-LAB	lab(84.94, -28.61, -21.73)
CIE-LCH	lch(84.94, 35.93, 217.21°)
OKLab	oklab(85.9% -0.099 -0.0602)
OKLCH	oklch(85.9% 0.116 211.3)
XYZ	xyz(51.0623, 65.8865, 102.1029)
Luminance	0.6589 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66E5FC #FC7D66

analogous

#66FCC8 #66E5FC #669AFC

triadic

#66E5FC #FC66E5 #E5FC66

tetradic

#66E5FC #C866FC #FC7D66 #9AFC66

square

#66E5FC #C866FC #FC7D66 #9AFC66

split-complementary

#66E5FC #FC669A #FCC866

monochromatic

#04C1E3 #2ADBFB #66E5FC #A2EFFD #DEF9FE

Accessibility & contrast

On white

1.48

#66E5FC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

14.18

#66E5FC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66E5FC

14.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66E5FC	#FFFFFF	#000000	##000000
##66E5FC	1.00	1.48	14.18	14.18
#FFFFFF	1.48	1.00	21.00	21.00
#000000	14.18	21.00	1.00	1.00
##000000	14.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D2DEFD

Deuteranopia (green-blind)

#BCCDFC

Tritanopia (blue-blind)

#00EFEC

Achromatopsia (no color)

#D4D4D4

Design tokens & code

CSS

--color: #66e5fc;
/* rgb */ color: rgb(102, 229, 252);
/* oklch */ color: oklch(85.9% 0.116 211.3);

Tailwind

colors: {
  custom: {
    50: '#9fedfd',
    500: '#66e5fc',
    950: '#000000',
  },
}

SCSS

$custom: #66e5fc;
$custom-light: #9fedfd;
$custom-dark: #000000;

JSON

{
  "hex": "#66e5fc",
  "rgb": {
    "r": 102,
    "g": 229,
    "b": 252
  },
  "hsl": {
    "h": 189.2,
    "s": 96.154,
    "l": 69.412
  },
  "oklch": {
    "l": 0.85901,
    "c": 0.11592,
    "h": 211.3
  },
  "luminance": 0.65892
}

Semantic roles & 50–950 ramp

primary

#66E5FC

secondary

#D64930

accent

#2300E6

background

#FDFFFF

surface

#F7FEFF

border

#D0D6D7

text

#101617

muted

#818585

Preview Lab

Preview with #66E5FC

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

Preview Lab → · Contrast checker → · Palette generator →