#66DFFB#66DFFB

#66DFFB is a very light, moderate cyan. Relative luminance 0.626; OKLCH L 84.5% C 0.114 H 215.3°. Best body text is #000000 at 13.51:1 contrast (WCAG AA passes).

Color values

HEX	#66DFFB
RGB	rgb(102, 223, 251)
HSL	hsl(191, 95%, 69%)
HSV	hsv(191, 59%, 98%)
CMYK	cmyk(59.4%, 11.2%, 0%, 1.6%)
CIE-LAB	lab(83.21, -25.97, -23.82)
CIE-LCH	lch(83.21, 35.24, 222.53°)
OKLab	oklab(84.5% -0.0933 -0.0661)
OKLCH	oklch(84.5% 0.114 215.3)
XYZ	xyz(49.2727, 62.5602, 100.7267)
Luminance	0.6257 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66DFFB #FB8266

analogous

#66FBCC #66DFFB #6695FB

triadic

#66DFFB #FB66DF #DFFB66

tetradic

#66DFFB #CC66FB #FB8266 #95FB66

square

#66DFFB #CC66FB #FB8266 #95FB66

split-complementary

#66DFFB #FB6695 #FBCC66

monochromatic

#06B8E1 #2AD3F9 #66DFFB #A2EBFD #DDF8FE

Accessibility & contrast

On white

1.55

#66DFFB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.51

#66DFFB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66DFFB

13.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66DFFB	#FFFFFF	#000000	##000000
##66DFFB	1.00	1.55	13.51	13.51
#FFFFFF	1.55	1.00	21.00	21.00
#000000	13.51	21.00	1.00	1.00
##000000	13.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CBD9FD

Deuteranopia (green-blind)

#B5C8FB

Tritanopia (blue-blind)

#00EAE8

Achromatopsia (no color)

#CFCFCF

Design tokens & code

CSS

--color: #66dffb;
/* rgb */ color: rgb(102, 223, 251);
/* oklch */ color: oklch(84.5% 0.114 215.3);

Tailwind

colors: {
  custom: {
    50: '#9fe9fc',
    500: '#66dffb',
    950: '#000000',
  },
}

SCSS

$custom: #66dffb;
$custom-light: #9fe9fc;
$custom-dark: #000000;

JSON

{
  "hex": "#66dffb",
  "rgb": {
    "r": 102,
    "g": 223,
    "b": 251
  },
  "hsl": {
    "h": 191.275,
    "s": 94.904,
    "l": 69.216
  },
  "oklch": {
    "l": 0.84503,
    "c": 0.11434,
    "h": 215.3
  },
  "luminance": 0.62565
}

Semantic roles & 50–950 ramp

primary

#66DFFB

secondary

#D54F30

accent

#2B00E6

background

#FDFEFF

surface

#F7FDFF

border

#D0D5D7

text

#101617

muted

#818485

Preview Lab

Preview with #66DFFB

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

Preview Lab → · Contrast checker → · Palette generator →