#66B3F7#66B3F7

#66B3F7 is a light, vivid cyan. Relative luminance 0.418; OKLCH L 74.5% C 0.125 H 247.0°. Best body text is #000000 at 9.36:1 contrast (WCAG AA passes).

Color values

HEX	#66B3F7
RGB	rgb(102, 179, 247)
HSL	hsl(208, 90%, 68%)
HSV	hsv(208, 59%, 97%)
CMYK	cmyk(58.7%, 27.5%, 0%, 3.1%)
CIE-LAB	lab(70.72, -4.21, -40.94)
CIE-LCH	lch(70.72, 41.15, 264.13°)
OKLab	oklab(74.51% -0.0488 -0.1151)
OKLCH	oklch(74.51% 0.125 247)
XYZ	xyz(38.3819, 41.7769, 94.0187)
Luminance	0.4178 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B3F7 #F7AA66

analogous

#66F7F2 #66B3F7 #666AF7

triadic

#66B3F7 #F766B3 #B3F766

tetradic

#66B3F7 #F266F7 #F7AA66 #6AF766

square

#66B3F7 #F266F7 #F7AA66 #6AF766

split-complementary

#66B3F7 #F7666A #F7F266

monochromatic

#0B78D7 #2C96F4 #66B3F7 #A0D0FA #DAEDFD

Accessibility & contrast

On white

2.24

#66B3F7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.36

#66B3F7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B3F7

9.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B3F7	#FFFFFF	#000000	##000000
##66B3F7	1.00	2.24	9.36	9.36
#FFFFFF	2.24	1.00	21.00	21.00
#000000	9.36	21.00	1.00	1.00
##000000	9.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#96B5FA

Deuteranopia (green-blind)

#82A7F6

Tritanopia (blue-blind)

#00C3CB

Achromatopsia (no color)

#ADADAD

Design tokens & code

CSS

--color: #66b3f7;
/* rgb */ color: rgb(102, 179, 247);
/* oklch */ color: oklch(74.5% 0.125 247.0);

Tailwind

colors: {
  custom: {
    50: '#9cc9fa',
    500: '#66b3f7',
    950: '#000000',
  },
}

SCSS

$custom: #66b3f7;
$custom-light: #9cc9fa;
$custom-dark: #000000;

JSON

{
  "hex": "#66b3f7",
  "rgb": {
    "r": 102,
    "g": 179,
    "b": 247
  },
  "hsl": {
    "h": 208.138,
    "s": 90.062,
    "l": 68.431
  },
  "oklch": {
    "l": 0.74513,
    "c": 0.12506,
    "h": 247
  },
  "luminance": 0.4178
}

Semantic roles & 50–950 ramp

primary

#66B3F7

secondary

#F2DBC7

accent

#6C00E6

background

#FAFCFF

surface

#F4F8FF

border

#CED1D7

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #66B3F7

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

Preview Lab → · Contrast checker → · Palette generator →