#66E1F9#66E1F9

#66E1F9 is a very light, moderate teal. Relative luminance 0.635; OKLCH L 84.9% C 0.114 H 212.4°. Best body text is #000000 at 13.70:1 contrast (WCAG AA passes).

Color values

HEX	#66E1F9
RGB	rgb(102, 225, 249)
HSL	hsl(190, 92%, 69%)
HSV	hsv(190, 59%, 98%)
CMYK	cmyk(59%, 9.6%, 0%, 2.4%)
CIE-LAB	lab(83.71, -27.52, -22.01)
CIE-LCH	lch(83.71, 35.23, 218.65°)
OKLab	oklab(84.88% -0.0961 -0.061)
OKLCH	oklch(84.88% 0.114 212.4)
XYZ	xyz(49.4966, 63.5098, 99.2543)
Luminance	0.6351 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66E1F9 #F97E66

analogous

#66F9C8 #66E1F9 #6698F9

triadic

#66E1F9 #F966E1 #E1F966

tetradic

#66E1F9 #C866F9 #F97E66 #98F966

square

#66E1F9 #C866F9 #F97E66 #98F966

split-complementary

#66E1F9 #F96698 #F9C866

monochromatic

#09B9DC #2BD5F7 #66E1F9 #A1EDFB #DCF8FE

Accessibility & contrast

On white

1.53

#66E1F9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.70

#66E1F9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66E1F9

13.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66E1F9	#FFFFFF	#000000	##000000
##66E1F9	1.00	1.53	13.70	13.70
#FFFFFF	1.53	1.00	21.00	21.00
#000000	13.70	21.00	1.00	1.00
##000000	13.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CEDAFA

Deuteranopia (green-blind)

#B8CAF9

Tritanopia (blue-blind)

#00EBE8

Achromatopsia (no color)

#D1D1D1

Design tokens & code

CSS

--color: #66e1f9;
/* rgb */ color: rgb(102, 225, 249);
/* oklch */ color: oklch(84.9% 0.114 212.4);

Tailwind

colors: {
  custom: {
    50: '#9feafb',
    500: '#66e1f9',
    950: '#000000',
  },
}

SCSS

$custom: #66e1f9;
$custom-light: #9feafb;
$custom-dark: #000000;

JSON

{
  "hex": "#66e1f9",
  "rgb": {
    "r": 102,
    "g": 225,
    "b": 249
  },
  "hsl": {
    "h": 189.796,
    "s": 92.453,
    "l": 68.824
  },
  "oklch": {
    "l": 0.84882,
    "c": 0.11384,
    "h": 212.4
  },
  "luminance": 0.63515
}

Semantic roles & 50–950 ramp

primary

#66E1F9

secondary

#D34B30

accent

#2500E6

background

#FDFEFF

surface

#F7FDFF

border

#D0D5D7

text

#101617

muted

#818485

Preview Lab

Preview with #66E1F9

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

Preview Lab → · Contrast checker → · Palette generator →