#66CEE5#66CEE5

#66CEE5 is a light, moderate cyan. Relative luminance 0.526; OKLCH L 79.8% C 0.101 H 214.2°. Best body text is #000000 at 11.53:1 contrast (WCAG AA passes).

Color values

HEX	#66CEE5
RGB	rgb(102, 206, 229)
HSL	hsl(191, 71%, 65%)
HSV	hsv(191, 55%, 90%)
CMYK	cmyk(55.5%, 10%, 0%, 10.2%)
CIE-LAB	lab(77.65, -23.77, -20.55)
CIE-LCH	lch(77.65, 31.42, 220.84°)
OKLab	oklab(79.8% -0.0839 -0.0569)
OKLCH	oklch(79.8% 0.101 214.2)
XYZ	xyz(41.6880, 52.6206, 82.0734)
Luminance	0.5262 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CEE5 #E57D66

analogous

#66E5BC #66CEE5 #668FE5

triadic

#66CEE5 #E566CE #CEE566

tetradic

#66CEE5 #BC66E5 #E57D66 #8FE566

square

#66CEE5 #BC66E5 #E57D66 #8FE566

split-complementary

#66CEE5 #E5668F #E5BC66

monochromatic

#1E97B2 #32BDDC #66CEE5 #9ADFEE #CFF0F7

Accessibility & contrast

On white

1.82

#66CEE5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.53

#66CEE5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CEE5

11.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CEE5	#FFFFFF	#000000	##000000
##66CEE5	1.00	1.82	11.53	11.53
#FFFFFF	1.82	1.00	21.00	21.00
#000000	11.53	21.00	1.00	1.00
##000000	11.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BDC8E6

Deuteranopia (green-blind)

#AABAE5

Tritanopia (blue-blind)

#00D7D5

Achromatopsia (no color)

#C0C0C0

Design tokens & code

CSS

--color: #66cee5;
/* rgb */ color: rgb(102, 206, 229);
/* oklch */ color: oklch(79.8% 0.101 214.2);

Tailwind

colors: {
  custom: {
    50: '#9cdded',
    500: '#66cee5',
    950: '#000000',
  },
}

SCSS

$custom: #66cee5;
$custom-light: #9cdded;
$custom-dark: #000000;

JSON

{
  "hex": "#66cee5",
  "rgb": {
    "r": 102,
    "g": 206,
    "b": 229
  },
  "hsl": {
    "h": 190.866,
    "s": 70.95,
    "l": 64.902
  },
  "oklch": {
    "l": 0.79802,
    "c": 0.10135,
    "h": 214.2
  },
  "luminance": 0.52625
}

Semantic roles & 50–950 ramp

primary

#66CEE5

secondary

#B3523C

accent

#3513D3

background

#FCFEFE

surface

#F5FCFD

border

#CFD5D5

text

#0F1516

muted

#808484

Preview Lab

Preview with #66CEE5

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

Preview Lab → · Contrast checker → · Palette generator →