#66BBF0#66BBF0

#66BBF0 is a light, moderate cyan. Relative luminance 0.447; OKLCH L 76.0% C 0.112 H 238.1°. Best body text is #000000 at 9.93:1 contrast (WCAG AA passes).

Color values

HEX	#66BBF0
RGB	rgb(102, 187, 240)
HSL	hsl(203, 82%, 67%)
HSV	hsv(203, 58%, 94%)
CMYK	cmyk(57.5%, 22.1%, 0%, 5.9%)
CIE-LAB	lab(72.66, -10.71, -34.12)
CIE-LCH	lch(72.66, 35.76, 252.57°)
OKLab	oklab(75.96% -0.0595 -0.0955)
OKLCH	oklch(75.96% 0.112 238.1)
XYZ	xyz(38.9721, 44.6531, 88.9863)
Luminance	0.4466 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BBF0 #F09B66

analogous

#66F0E0 #66BBF0 #6676F0

triadic

#66BBF0 #F066BB #BBF066

tetradic

#66BBF0 #E066F0 #F09B66 #76F066

square

#66BBF0 #E066F0 #F09B66 #76F066

split-complementary

#66BBF0 #F06676 #F0E066

monochromatic

#1483C8 #2EA2EB #66BBF0 #9ED4F5 #D5EDFB

Accessibility & contrast

On white

2.11

#66BBF0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.93

#66BBF0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BBF0

9.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BBF0	#FFFFFF	#000000	##000000
##66BBF0	1.00	2.11	9.93	9.93
#FFFFFF	2.11	1.00	21.00	21.00
#000000	9.93	21.00	1.00	1.00
##000000	9.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A3BAF3

Deuteranopia (green-blind)

#90ACEF

Tritanopia (blue-blind)

#00C8CD

Achromatopsia (no color)

#B2B2B2

Design tokens & code

CSS

--color: #66bbf0;
/* rgb */ color: rgb(102, 187, 240);
/* oklch */ color: oklch(76.0% 0.112 238.1);

Tailwind

colors: {
  custom: {
    50: '#9ccff5',
    500: '#66bbf0',
    950: '#000000',
  },
}

SCSS

$custom: #66bbf0;
$custom-light: #9ccff5;
$custom-dark: #000000;

JSON

{
  "hex": "#66bbf0",
  "rgb": {
    "r": 102,
    "g": 187,
    "b": 240
  },
  "hsl": {
    "h": 203.043,
    "s": 82.143,
    "l": 67.059
  },
  "oklch": {
    "l": 0.75957,
    "c": 0.11249,
    "h": 238.1
  },
  "luminance": 0.44657
}

Semantic roles & 50–950 ramp

primary

#66BBF0

secondary

#EFD4C3

accent

#5A07DF

background

#FAFCFE

surface

#F4F9FD

border

#CED2D5

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #66BBF0

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

Preview Lab → · Contrast checker → · Palette generator →