#66A4FC#66A4FC

#66A4FC is a light, vivid blue. Relative luminance 0.364; OKLCH L 71.5% C 0.144 H 257.3°. Best body text is #000000 at 8.28:1 contrast (WCAG AA passes).

Color values

HEX	#66A4FC
RGB	rgb(102, 164, 252)
HSL	hsl(215, 96%, 69%)
HSV	hsv(215, 60%, 99%)
CMYK	cmyk(59.5%, 34.9%, 0%, 1.2%)
CIE-LAB	lab(66.83, 5.83, -49.77)
CIE-LCH	lch(66.83, 50.11, 276.68°)
OKLab	oklab(71.54% -0.0318 -0.1409)
OKLCH	oklch(71.54% 0.144 257.3)
XYZ	xyz(36.3194, 36.4007, 97.1886)
Luminance	0.3640 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A4FC #FCBE66

analogous

#66EFFC #66A4FC #7366FC

triadic

#66A4FC #FC66A4 #A4FC66

tetradic

#66A4FC #FC66EF #FCBE66 #66FC73

square

#66A4FC #FC66EF #FCBE66 #66FC73

split-complementary

#66A4FC #FC7366 #EFFC66

monochromatic

#0461E3 #2A80FB #66A4FC #A2C8FD #DEEBFE

Accessibility & contrast

On white

2.54

#66A4FC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.28

#66A4FC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A4FC

8.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A4FC	#FFFFFF	#000000	##000000
##66A4FC	1.00	2.54	8.28	8.28
#FFFFFF	2.54	1.00	21.00	21.00
#000000	8.28	21.00	1.00	1.00
##000000	8.28	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7FAAFF

Deuteranopia (green-blind)

#6B9CFA

Tritanopia (blue-blind)

#00B8C4

Achromatopsia (no color)

#A3A3A3

Design tokens & code

CSS

--color: #66a4fc;
/* rgb */ color: rgb(102, 164, 252);
/* oklch */ color: oklch(71.5% 0.144 257.3);

Tailwind

colors: {
  custom: {
    50: '#9dbefe',
    500: '#66a4fc',
    950: '#000000',
  },
}

SCSS

$custom: #66a4fc;
$custom-light: #9dbefe;
$custom-dark: #000000;

JSON

{
  "hex": "#66a4fc",
  "rgb": {
    "r": 102,
    "g": 164,
    "b": 252
  },
  "hsl": {
    "h": 215.2,
    "s": 96.154,
    "l": 69.412
  },
  "oklch": {
    "l": 0.71538,
    "c": 0.14447,
    "h": 257.3
  },
  "luminance": 0.36404
}

Semantic roles & 50–950 ramp

primary

#66A4FC

secondary

#F5E3C9

accent

#8700E6

background

#FAFBFF

surface

#F4F6FF

border

#CED0D7

text

#0F1218

muted

#7F8186

Preview Lab

Preview with #66A4FC

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

Preview Lab → · Contrast checker → · Palette generator →