#66A6ED#66A6ED

#66A6ED is a light, vivid cyan. Relative luminance 0.362; OKLCH L 71.2% C 0.124 H 252.2°. Best body text is #000000 at 8.24:1 contrast (WCAG AA passes).

Color values

HEX	#66A6ED
RGB	rgb(102, 166, 237)
HSL	hsl(212, 79%, 66%)
HSV	hsv(212, 57%, 93%)
CMYK	cmyk(57%, 30%, 0%, 7.1%)
CIE-LAB	lab(66.68, -0.07, -41.81)
CIE-LCH	lch(66.68, 41.81, 269.91°)
OKLab	oklab(71.2% -0.0378 -0.1177)
OKLCH	oklch(71.2% 0.124 252.2)
XYZ	xyz(34.3963, 36.2087, 85.2807)
Luminance	0.3621 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A6ED #EDAD66

analogous

#66E9ED #66A6ED #6A66ED

triadic

#66A6ED #ED66A6 #A6ED66

tetradic

#66A6ED #ED66E9 #EDAD66 #66ED6A

square

#66A6ED #ED66E9 #EDAD66 #66ED6A

split-complementary

#66A6ED #ED6A66 #E9ED66

monochromatic

#1768C2 #2F86E7 #66A6ED #9DC6F3 #D4E6FA

Accessibility & contrast

On white

2.55

#66A6ED on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.24

#66A6ED on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A6ED

8.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A6ED	#FFFFFF	#000000	##000000
##66A6ED	1.00	2.55	8.24	8.24
#FFFFFF	2.55	1.00	21.00	21.00
#000000	8.24	21.00	1.00	1.00
##000000	8.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#88A9F0

Deuteranopia (green-blind)

#779CEC

Tritanopia (blue-blind)

#00B6BF

Achromatopsia (no color)

#A2A2A2

Design tokens & code

CSS

--color: #66a6ed;
/* rgb */ color: rgb(102, 166, 237);
/* oklch */ color: oklch(71.2% 0.124 252.2);

Tailwind

colors: {
  custom: {
    50: '#9bc0f3',
    500: '#66a6ed',
    950: '#000000',
  },
}

SCSS

$custom: #66a6ed;
$custom-light: #9bc0f3;
$custom-dark: #000000;

JSON

{
  "hex": "#66a6ed",
  "rgb": {
    "r": 102,
    "g": 166,
    "b": 237
  },
  "hsl": {
    "h": 211.556,
    "s": 78.947,
    "l": 66.471
  },
  "oklch": {
    "l": 0.71196,
    "c": 0.12368,
    "h": 252.2
  },
  "luminance": 0.36212
}

Semantic roles & 50–950 ramp

primary

#66A6ED

secondary

#EDD9C2

accent

#780ADB

background

#FAFBFE

surface

#F3F7FD

border

#CDD0D5

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66A6ED

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

Preview Lab → · Contrast checker → · Palette generator →