#66AAF2#66AAF2

#66AAF2 is a light, vivid cyan. Relative luminance 0.380; OKLCH L 72.3% C 0.126 H 251.2°. Best body text is #000000 at 8.60:1 contrast (WCAG AA passes).

Color values

HEX	#66AAF2
RGB	rgb(102, 170, 242)
HSL	hsl(211, 84%, 67%)
HSV	hsv(211, 58%, 95%)
CMYK	cmyk(57.9%, 29.8%, 0%, 5.1%)
CIE-LAB	lab(68.01, -0.75, -42.46)
CIE-LCH	lch(68.01, 42.47, 268.98°)
OKLab	oklab(72.31% -0.0407 -0.1196)
OKLCH	oklch(72.31% 0.126 251.2)
XYZ	xyz(35.8755, 37.9819, 89.4278)
Luminance	0.3799 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66AAF2 #F2AE66

analogous

#66F0F2 #66AAF2 #6866F2

triadic

#66AAF2 #F266AA #AAF266

tetradic

#66AAF2 #F266F0 #F2AE66 #66F268

square

#66AAF2 #F266F0 #F2AE66 #66F268

split-complementary

#66AAF2 #F26866 #F0F266

monochromatic

#116CCC #2E8BED #66AAF2 #9EC9F7 #D7E9FC

Accessibility & contrast

On white

2.44

#66AAF2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.60

#66AAF2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AAF2

8.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66AAF2	#FFFFFF	#000000	##000000
##66AAF2	1.00	2.44	8.60	8.60
#FFFFFF	2.44	1.00	21.00	21.00
#000000	8.60	21.00	1.00	1.00
##000000	8.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8CADF5

Deuteranopia (green-blind)

#79A0F1

Tritanopia (blue-blind)

#00BBC3

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #66aaf2;
/* rgb */ color: rgb(102, 170, 242);
/* oklch */ color: oklch(72.3% 0.126 251.2);

Tailwind

colors: {
  custom: {
    50: '#9cc3f6',
    500: '#66aaf2',
    950: '#000000',
  },
}

SCSS

$custom: #66aaf2;
$custom-light: #9cc3f6;
$custom-dark: #000000;

JSON

{
  "hex": "#66aaf2",
  "rgb": {
    "r": 102,
    "g": 170,
    "b": 242
  },
  "hsl": {
    "h": 210.857,
    "s": 84.337,
    "l": 67.451
  },
  "oklch": {
    "l": 0.72311,
    "c": 0.12636,
    "h": 251.2
  },
  "luminance": 0.37985
}

Semantic roles & 50–950 ramp

primary

#66AAF2

secondary

#F0DBC4

accent

#7605E1

background

#FAFBFF

surface

#F4F7FE

border

#CED0D6

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66AAF2

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

Preview Lab → · Contrast checker → · Palette generator →