#66A3FC#66A3FC

#66A3FC is a light, vivid blue. Relative luminance 0.360; OKLCH L 71.3% C 0.145 H 257.8°. Best body text is #000000 at 8.21:1 contrast (WCAG AA passes).

Color values

HEX	#66A3FC
RGB	rgb(102, 163, 252)
HSL	hsl(216, 96%, 69%)
HSV	hsv(216, 60%, 99%)
CMYK	cmyk(59.5%, 35.3%, 0%, 1.2%)
CIE-LAB	lab(66.55, 6.40, -50.19)
CIE-LCH	lch(66.55, 50.60, 277.27°)
OKLab	oklab(71.33% -0.0308 -0.1422)
OKLCH	oklch(71.33% 0.145 257.8)
XYZ	xyz(36.1412, 36.0442, 97.1292)
Luminance	0.3605 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A3FC #FCBF66

analogous

#66EEFC #66A3FC #7466FC

triadic

#66A3FC #FC66A3 #A3FC66

tetradic

#66A3FC #FC66EE #FCBF66 #66FC74

square

#66A3FC #FC66EE #FCBF66 #66FC74

split-complementary

#66A3FC #FC7466 #EEFC66

monochromatic

#045FE3 #2A7FFB #66A3FC #A2C7FD #DEEBFE

Accessibility & contrast

On white

2.56

#66A3FC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.21

#66A3FC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A3FC

8.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A3FC	#FFFFFF	#000000	##000000
##66A3FC	1.00	2.56	8.21	8.21
#FFFFFF	2.56	1.00	21.00	21.00
#000000	8.21	21.00	1.00	1.00
##000000	8.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7DAAFF

Deuteranopia (green-blind)

#699BFA

Tritanopia (blue-blind)

#00B7C4

Achromatopsia (no color)

#A2A2A2

Design tokens & code

CSS

--color: #66a3fc;
/* rgb */ color: rgb(102, 163, 252);
/* oklch */ color: oklch(71.3% 0.145 257.8);

Tailwind

colors: {
  custom: {
    50: '#9dbdfe',
    500: '#66a3fc',
    950: '#000000',
  },
}

SCSS

$custom: #66a3fc;
$custom-light: #9dbdfe;
$custom-dark: #000000;

JSON

{
  "hex": "#66a3fc",
  "rgb": {
    "r": 102,
    "g": 163,
    "b": 252
  },
  "hsl": {
    "h": 215.6,
    "s": 96.154,
    "l": 69.412
  },
  "oklch": {
    "l": 0.71326,
    "c": 0.14548,
    "h": 257.8
  },
  "luminance": 0.36047
}

Semantic roles & 50–950 ramp

primary

#66A3FC

secondary

#F5E3C9

accent

#8800E6

background

#FAFBFF

surface

#F4F6FF

border

#CED0D7

text

#0F1218

muted

#7F8186

Preview Lab

Preview with #66A3FC

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

Preview Lab → · Contrast checker → · Palette generator →