#66A3F7#66A3F7

#66A3F7 is a light, vivid cyan. Relative luminance 0.357; OKLCH L 71.1% C 0.139 H 256.7°. Best body text is #000000 at 8.15:1 contrast (WCAG AA passes).

Color values

HEX	#66A3F7
RGB	rgb(102, 163, 247)
HSL	hsl(215, 90%, 68%)
HSV	hsv(215, 59%, 97%)
CMYK	cmyk(58.7%, 34%, 0%, 3.1%)
CIE-LAB	lab(66.31, 4.80, -47.85)
CIE-LCH	lch(66.31, 48.09, 275.73°)
OKLab	oklab(71.06% -0.032 -0.1353)
OKLCH	oklch(71.06% 0.139 256.7)
XYZ	xyz(35.3592, 35.7315, 93.0111)
Luminance	0.3574 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A3F7 #F7BA66

analogous

#66EBF7 #66A3F7 #7166F7

triadic

#66A3F7 #F766A3 #A3F766

tetradic

#66A3F7 #F766EB #F7BA66 #66F771

square

#66A3F7 #F766EB #F7BA66 #66F771

split-complementary

#66A3F7 #F77166 #EBF766

monochromatic

#0B61D7 #2C80F4 #66A3F7 #A0C6FA #DAE9FD

Accessibility & contrast

On white

2.58

#66A3F7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.15

#66A3F7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A3F7

8.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A3F7	#FFFFFF	#000000	##000000
##66A3F7	1.00	2.58	8.15	8.15
#FFFFFF	2.58	1.00	21.00	21.00
#000000	8.15	21.00	1.00	1.00
##000000	8.15	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#80A9FB

Deuteranopia (green-blind)

#6D9BF5

Tritanopia (blue-blind)

#00B6C2

Achromatopsia (no color)

#A1A1A1

Design tokens & code

CSS

--color: #66a3f7;
/* rgb */ color: rgb(102, 163, 247);
/* oklch */ color: oklch(71.1% 0.139 256.7);

Tailwind

colors: {
  custom: {
    50: '#9cbdfa',
    500: '#66a3f7',
    950: '#000000',
  },
}

SCSS

$custom: #66a3f7;
$custom-light: #9cbdfa;
$custom-dark: #000000;

JSON

{
  "hex": "#66a3f7",
  "rgb": {
    "r": 102,
    "g": 163,
    "b": 247
  },
  "hsl": {
    "h": 214.759,
    "s": 90.062,
    "l": 68.431
  },
  "oklch": {
    "l": 0.71061,
    "c": 0.13907,
    "h": 256.7
  },
  "luminance": 0.35735
}

Semantic roles & 50–950 ramp

primary

#66A3F7

secondary

#F2E0C7

accent

#8500E6

background

#FAFBFF

surface

#F4F6FF

border

#CED0D7

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66A3F7

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

Preview Lab → · Contrast checker → · Palette generator →