#66BBF7#66BBF7

#66BBF7 is a light, moderate cyan. Relative luminance 0.451; OKLCH L 76.3% C 0.120 H 241.4°. Best body text is #000000 at 10.02:1 contrast (WCAG AA passes).

Color values

HEX	#66BBF7
RGB	rgb(102, 187, 247)
HSL	hsl(205, 90%, 68%)
HSV	hsv(205, 59%, 97%)
CMYK	cmyk(58.7%, 24.3%, 0%, 3.1%)
CIE-LAB	lab(72.94, -8.58, -37.47)
CIE-LCH	lch(72.94, 38.44, 257.10°)
OKLab	oklab(76.27% -0.0572 -0.1051)
OKLCH	oklch(76.27% 0.12 241.4)
XYZ	xyz(40.0321, 45.0771, 94.5687)
Luminance	0.4508 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BBF7 #F7A266

analogous

#66F7EB #66BBF7 #6672F7

triadic

#66BBF7 #F766BB #BBF766

tetradic

#66BBF7 #EB66F7 #F7A266 #72F766

square

#66BBF7 #EB66F7 #F7A266 #72F766

split-complementary

#66BBF7 #F76672 #F7EB66

monochromatic

#0B83D7 #2CA1F4 #66BBF7 #A0D5FA #DAEFFD

Accessibility & contrast

On white

2.10

#66BBF7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.02

#66BBF7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BBF7

10.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BBF7	#FFFFFF	#000000	##000000
##66BBF7	1.00	2.10	10.02	10.02
#FFFFFF	2.10	1.00	21.00	21.00
#000000	10.02	21.00	1.00	1.00
##000000	10.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A0BBFA

Deuteranopia (green-blind)

#8DADF6

Tritanopia (blue-blind)

#00CACF

Achromatopsia (no color)

#B3B3B3

Design tokens & code

CSS

--color: #66bbf7;
/* rgb */ color: rgb(102, 187, 247);
/* oklch */ color: oklch(76.3% 0.120 241.4);

Tailwind

colors: {
  custom: {
    50: '#9dcffa',
    500: '#66bbf7',
    950: '#000000',
  },
}

SCSS

$custom: #66bbf7;
$custom-light: #9dcffa;
$custom-dark: #000000;

JSON

{
  "hex": "#66bbf7",
  "rgb": {
    "r": 102,
    "g": 187,
    "b": 247
  },
  "hsl": {
    "h": 204.828,
    "s": 90.062,
    "l": 68.431
  },
  "oklch": {
    "l": 0.76271,
    "c": 0.11966,
    "h": 241.4
  },
  "luminance": 0.45081
}

Semantic roles & 50–950 ramp

primary

#66BBF7

secondary

#F2D9C7

accent

#5F00E6

background

#FAFCFF

surface

#F4F9FF

border

#CED2D7

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #66BBF7

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

Preview Lab → · Contrast checker → · Palette generator →