#66E1EF#66E1EF

#66E1EF is a very light, moderate teal. Relative luminance 0.629; OKLCH L 84.5% C 0.111 H 205.5°. Best body text is #000000 at 13.58:1 contrast (WCAG AA passes).

Color values

HEX	#66E1EF
RGB	rgb(102, 225, 239)
HSL	hsl(186, 81%, 67%)
HSV	hsv(186, 57%, 94%)
CMYK	cmyk(57.3%, 5.9%, 0%, 6.3%)
CIE-LAB	lab(83.39, -30.30, -17.20)
CIE-LCH	lch(83.39, 34.84, 209.59°)
OKLab	oklab(84.52% -0.1 -0.0476)
OKLCH	oklch(84.52% 0.111 205.5)
XYZ	xyz(47.9782, 62.9024, 91.2575)
Luminance	0.6291 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66E1EF #EF7466

analogous

#66EFB8 #66E1EF #669DEF

triadic

#66E1EF #EF66E1 #E1EF66

tetradic

#66E1EF #B866EF #EF7466 #9DEF66

square

#66E1EF #B866EF #EF7466 #9DEF66

split-complementary

#66E1EF #EF669D #EFB866

monochromatic

#15B4C6 #2FD6E9 #66E1EF #9DECF5 #D5F7FB

Accessibility & contrast

On white

1.55

#66E1EF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.58

#66E1EF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66E1EF

13.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66E1EF	#FFFFFF	#000000	##000000
##66E1EF	1.00	1.55	13.58	13.58
#FFFFFF	1.55	1.00	21.00	21.00
#000000	13.58	21.00	1.00	1.00
##000000	13.58	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D1D9F0

Deuteranopia (green-blind)

#BCC9EF

Tritanopia (blue-blind)

#00E9E5

Achromatopsia (no color)

#D0D0D0

Design tokens & code

CSS

--color: #66e1ef;
/* rgb */ color: rgb(102, 225, 239);
/* oklch */ color: oklch(84.5% 0.111 205.5);

Tailwind

colors: {
  custom: {
    50: '#9eeaf4',
    500: '#66e1ef',
    950: '#000000',
  },
}

SCSS

$custom: #66e1ef;
$custom-light: #9eeaf4;
$custom-dark: #000000;

JSON

{
  "hex": "#66e1ef",
  "rgb": {
    "r": 102,
    "g": 225,
    "b": 239
  },
  "hsl": {
    "h": 186.131,
    "s": 81.065,
    "l": 66.863
  },
  "oklch": {
    "l": 0.8452,
    "c": 0.11076,
    "h": 205.5
  },
  "luminance": 0.62907
}

Semantic roles & 50–950 ramp

primary

#66E1EF

secondary

#C34436

accent

#1E08DD

background

#FCFEFF

surface

#F6FDFE

border

#D0D5D6

text

#101617

muted

#808485

Preview Lab

Preview with #66E1EF

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

Preview Lab → · Contrast checker → · Palette generator →