#66B0EA#66B0EA

#66B0EA is a light, moderate cyan. Relative luminance 0.398; OKLCH L 73.2% C 0.113 H 243.8°. Best body text is #000000 at 8.96:1 contrast (WCAG AA passes).

Color values

HEX	#66B0EA
RGB	rgb(102, 176, 234)
HSL	hsl(206, 76%, 66%)
HSV	hsv(206, 56%, 92%)
CMYK	cmyk(56.4%, 24.8%, 0%, 8.2%)
CIE-LAB	lab(69.34, -6.56, -36.02)
CIE-LCH	lch(69.34, 36.62, 259.67°)
OKLab	oklab(73.25% -0.0496 -0.101)
OKLCH	oklch(73.25% 0.113 243.8)
XYZ	xyz(35.8507, 39.8128, 83.6213)
Luminance	0.3982 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B0EA #EAA066

analogous

#66EAE2 #66B0EA #666EEA

triadic

#66B0EA #EA66B0 #B0EA66

tetradic

#66B0EA #E266EA #EAA066 #6EEA66

square

#66B0EA #E266EA #EAA066 #6EEA66

split-complementary

#66B0EA #EA666E #EAE266

monochromatic

#1A75BC #3094E3 #66B0EA #9CCCF1 #D2E8F9

Accessibility & contrast

On white

2.34

#66B0EA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.96

#66B0EA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B0EA

8.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B0EA	#FFFFFF	#000000	##000000
##66B0EA	1.00	2.34	8.96	8.96
#FFFFFF	2.34	1.00	21.00	21.00
#000000	8.96	21.00	1.00	1.00
##000000	8.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#97B1ED

Deuteranopia (green-blind)

#85A3E9

Tritanopia (blue-blind)

#00BEC4

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #66b0ea;
/* rgb */ color: rgb(102, 176, 234);
/* oklch */ color: oklch(73.2% 0.113 243.8);

Tailwind

colors: {
  custom: {
    50: '#9bc7f1',
    500: '#66b0ea',
    950: '#000000',
  },
}

SCSS

$custom: #66b0ea;
$custom-light: #9bc7f1;
$custom-dark: #000000;

JSON

{
  "hex": "#66b0ea",
  "rgb": {
    "r": 102,
    "g": 176,
    "b": 234
  },
  "hsl": {
    "h": 206.364,
    "s": 75.862,
    "l": 65.882
  },
  "oklch": {
    "l": 0.73245,
    "c": 0.1125,
    "h": 243.8
  },
  "luminance": 0.39816
}

Semantic roles & 50–950 ramp

primary

#66B0EA

secondary

#ECD3C0

accent

#660DD8

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1316

muted

#7F8284

Preview Lab

Preview with #66B0EA

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

Preview Lab → · Contrast checker → · Palette generator →