#66E9FD#66E9FD

#66E9FD is a very light, moderate teal. Relative luminance 0.682; OKLCH L 86.8% C 0.117 H 208.9°. Best body text is #000000 at 14.64:1 contrast (WCAG AA passes).

Color values

HEX	#66E9FD
RGB	rgb(102, 233, 253)
HSL	hsl(188, 97%, 70%)
HSV	hsv(188, 60%, 99%)
CMYK	cmyk(59.7%, 7.9%, 0%, 0.8%)
CIE-LAB	lab(86.10, -30.26, -20.49)
CIE-LCH	lch(86.10, 36.55, 214.11°)
OKLab	oklab(86.85% -0.1027 -0.0568)
OKLCH	oklch(86.85% 0.117 208.9)
XYZ	xyz(52.3407, 68.1891, 103.3129)
Luminance	0.6819 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66E9FD #FD7A66

analogous

#66FDC6 #66E9FD #669EFD

triadic

#66E9FD #FD66E9 #E9FD66

tetradic

#66E9FD #C666FD #FD7A66 #9EFD66

square

#66E9FD #C666FD #FD7A66 #9EFD66

split-complementary

#66E9FD #FD669E #FDC666

monochromatic

#03C8E6 #2AE0FC #66E9FD #A2F2FE #DFFAFF

Accessibility & contrast

On white

1.43

#66E9FD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

14.64

#66E9FD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66E9FD

14.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66E9FD	#FFFFFF	#000000	##000000
##66E9FD	1.00	1.43	14.64	14.64
#FFFFFF	1.43	1.00	21.00	21.00
#000000	14.64	21.00	1.00	1.00
##000000	14.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D7E1FE

Deuteranopia (green-blind)

#C0D0FD

Tritanopia (blue-blind)

#00F3EF

Achromatopsia (no color)

#D7D7D7

Design tokens & code

CSS

--color: #66e9fd;
/* rgb */ color: rgb(102, 233, 253);
/* oklch */ color: oklch(86.8% 0.117 208.9);

Tailwind

colors: {
  custom: {
    50: '#a0f0fe',
    500: '#66e9fd',
    950: '#000000',
  },
}

SCSS

$custom: #66e9fd;
$custom-light: #a0f0fe;
$custom-dark: #000000;

JSON

{
  "hex": "#66e9fd",
  "rgb": {
    "r": 102,
    "g": 233,
    "b": 253
  },
  "hsl": {
    "h": 187.947,
    "s": 97.419,
    "l": 69.608
  },
  "oklch": {
    "l": 0.86846,
    "c": 0.11737,
    "h": 208.9
  },
  "luminance": 0.68194
}

Semantic roles & 50–950 ramp

primary

#66E9FD

secondary

#D8462F

accent

#1E00E6

background

#FDFFFF

surface

#F7FEFF

border

#D0D6D7

text

#101617

muted

#818585

Preview Lab

Preview with #66E9FD

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

Preview Lab → · Contrast checker → · Palette generator →