#66E9F8#66E9F8

#66E9F8 is a very light, moderate teal. Relative luminance 0.679; OKLCH L 86.7% C 0.116 H 205.6°. Best body text is #000000 at 14.58:1 contrast (WCAG AA passes).

Color values

HEX	#66E9F8
RGB	rgb(102, 233, 248)
HSL	hsl(186, 91%, 69%)
HSV	hsv(186, 59%, 97%)
CMYK	cmyk(58.9%, 6%, 0%, 2.7%)
CIE-LAB	lab(85.94, -31.64, -18.10)
CIE-LCH	lch(85.94, 36.46, 209.77°)
OKLab	oklab(86.67% -0.1047 -0.0501)
OKLCH	oklch(86.67% 0.116 205.6)
XYZ	xyz(51.5546, 67.8746, 99.1729)
Luminance	0.6788 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66E9F8 #F87566

analogous

#66F8BE #66E9F8 #66A0F8

triadic

#66E9F8 #F866E9 #E9F866

tetradic

#66E9F8 #BE66F8 #F87566 #A0F866

square

#66E9F8 #BE66F8 #F87566 #A0F866

split-complementary

#66E9F8 #F866A0 #F8BE66

monochromatic

#0AC4DA #2BE1F5 #66E9F8 #A1F1FB #DBFAFD

Accessibility & contrast

On white

1.44

#66E9F8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

14.58

#66E9F8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66E9F8

14.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66E9F8	#FFFFFF	#000000	##000000
##66E9F8	1.00	1.44	14.58	14.58
#FFFFFF	1.44	1.00	21.00	21.00
#000000	14.58	21.00	1.00	1.00
##000000	14.58	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D8E0F9

Deuteranopia (green-blind)

#C1D0F8

Tritanopia (blue-blind)

#00F2ED

Achromatopsia (no color)

#D7D7D7

Design tokens & code

CSS

--color: #66e9f8;
/* rgb */ color: rgb(102, 233, 248);
/* oklch */ color: oklch(86.7% 0.116 205.6);

Tailwind

colors: {
  custom: {
    50: '#9ff0fa',
    500: '#66e9f8',
    950: '#000000',
  },
}

SCSS

$custom: #66e9f8;
$custom-light: #9ff0fa;
$custom-dark: #000000;

JSON

{
  "hex": "#66e9f8",
  "rgb": {
    "r": 102,
    "g": 233,
    "b": 248
  },
  "hsl": {
    "h": 186.164,
    "s": 91.25,
    "l": 68.627
  },
  "oklch": {
    "l": 0.86668,
    "c": 0.11606,
    "h": 205.6
  },
  "luminance": 0.6788
}

Semantic roles & 50–950 ramp

primary

#66E9F8

secondary

#D24131

accent

#1800E6

background

#FDFFFF

surface

#F7FEFF

border

#D0D6D7

text

#101617

muted

#818585

Preview Lab

Preview with #66E9F8

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

Preview Lab → · Contrast checker → · Palette generator →