#66E5F9#66E5F9

#66E5F9 is a very light, moderate teal. Relative luminance 0.657; OKLCH L 85.8% C 0.115 H 209.3°. Best body text is #000000 at 14.14:1 contrast (WCAG AA passes).

Color values

HEX	#66E5F9
RGB	rgb(102, 229, 249)
HSL	hsl(188, 92%, 69%)
HSV	hsv(188, 59%, 98%)
CMYK	cmyk(59%, 8%, 0%, 2.4%)
CIE-LAB	lab(84.84, -29.45, -20.29)
CIE-LCH	lch(84.84, 35.77, 214.57°)
OKLab	oklab(85.79% -0.1002 -0.0562)
OKLCH	oklch(85.79% 0.115 209.3)
XYZ	xyz(50.5906, 65.6978, 99.6190)
Luminance	0.6570 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66E5F9 #F97A66

analogous

#66F9C4 #66E5F9 #669CF9

triadic

#66E5F9 #F966E5 #E5F966

tetradic

#66E5F9 #C466F9 #F97A66 #9CF966

square

#66E5F9 #C466F9 #F97A66 #9CF966

split-complementary

#66E5F9 #F9669C #F9C466

monochromatic

#09BFDC #2BDBF7 #66E5F9 #A1EFFB #DCF9FE

Accessibility & contrast

On white

1.49

#66E5F9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

14.14

#66E5F9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66E5F9

14.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66E5F9	#FFFFFF	#000000	##000000
##66E5F9	1.00	1.49	14.14	14.14
#FFFFFF	1.49	1.00	21.00	21.00
#000000	14.14	21.00	1.00	1.00
##000000	14.14	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D3DDFA

Deuteranopia (green-blind)

#BDCDF9

Tritanopia (blue-blind)

#00EEEB

Achromatopsia (no color)

#D4D4D4

Design tokens & code

CSS

--color: #66e5f9;
/* rgb */ color: rgb(102, 229, 249);
/* oklch */ color: oklch(85.8% 0.115 209.3);

Tailwind

colors: {
  custom: {
    50: '#9fedfb',
    500: '#66e5f9',
    950: '#000000',
  },
}

SCSS

$custom: #66e5f9;
$custom-light: #9fedfb;
$custom-dark: #000000;

JSON

{
  "hex": "#66e5f9",
  "rgb": {
    "r": 102,
    "g": 229,
    "b": 249
  },
  "hsl": {
    "h": 188.163,
    "s": 92.453,
    "l": 68.824
  },
  "oklch": {
    "l": 0.85792,
    "c": 0.1149,
    "h": 209.3
  },
  "luminance": 0.65703
}

Semantic roles & 50–950 ramp

primary

#66E5F9

secondary

#D34730

accent

#1F00E6

background

#FDFFFF

surface

#F7FEFF

border

#D0D6D7

text

#101617

muted

#818585

Preview Lab

Preview with #66E5F9

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

Preview Lab → · Contrast checker → · Palette generator →