#66AAF8#66AAF8

#66AAF8 is a light, vivid cyan. Relative luminance 0.384; OKLCH L 72.6% C 0.134 H 253.0°. Best body text is #000000 at 8.67:1 contrast (WCAG AA passes).

Color values

HEX	#66AAF8
RGB	rgb(102, 170, 248)
HSL	hsl(212, 91%, 69%)
HSV	hsv(212, 59%, 97%)
CMYK	cmyk(58.9%, 31.5%, 0%, 2.7%)
CIE-LAB	lab(68.28, 1.13, -45.30)
CIE-LCH	lch(68.28, 45.32, 271.43°)
OKLab	oklab(72.61% -0.039 -0.1279)
OKLCH	oklch(72.61% 0.134 253)
XYZ	xyz(36.7914, 38.3482, 94.2518)
Luminance	0.3835 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66AAF8 #F8B466

analogous

#66F3F8 #66AAF8 #6B66F8

triadic

#66AAF8 #F866AA #AAF866

tetradic

#66AAF8 #F866F3 #F8B466 #66F86B

square

#66AAF8 #F866F3 #F8B466 #66F86B

split-complementary

#66AAF8 #F86B66 #F3F866

monochromatic

#0A6BDA #2B89F5 #66AAF8 #A1CBFB #DBEBFD

Accessibility & contrast

On white

2.42

#66AAF8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.67

#66AAF8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AAF8

8.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66AAF8	#FFFFFF	#000000	##000000
##66AAF8	1.00	2.42	8.67	8.67
#FFFFFF	2.42	1.00	21.00	21.00
#000000	8.67	21.00	1.00	1.00
##000000	8.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#89AEFB

Deuteranopia (green-blind)

#76A0F6

Tritanopia (blue-blind)

#00BCC6

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #66aaf8;
/* rgb */ color: rgb(102, 170, 248);
/* oklch */ color: oklch(72.6% 0.134 253.0);

Tailwind

colors: {
  custom: {
    50: '#9cc3fb',
    500: '#66aaf8',
    950: '#000000',
  },
}

SCSS

$custom: #66aaf8;
$custom-light: #9cc3fb;
$custom-dark: #000000;

JSON

{
  "hex": "#66aaf8",
  "rgb": {
    "r": 102,
    "g": 170,
    "b": 248
  },
  "hsl": {
    "h": 212.055,
    "s": 91.25,
    "l": 68.627
  },
  "oklch": {
    "l": 0.72611,
    "c": 0.13371,
    "h": 253
  },
  "luminance": 0.38352
}

Semantic roles & 50–950 ramp

primary

#66AAF8

secondary

#F3DEC7

accent

#7B00E6

background

#FAFBFF

surface

#F4F7FF

border

#CED0D7

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66AAF8

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

Preview Lab → · Contrast checker → · Palette generator →