#66A1FC#66A1FC

#66A1FC is a light, vivid blue. Relative luminance 0.353; OKLCH L 70.9% C 0.148 H 258.8°. Best body text is #000000 at 8.07:1 contrast (WCAG AA passes).

Color values

HEX	#66A1FC
RGB	rgb(102, 161, 252)
HSL	hsl(216, 96%, 69%)
HSV	hsv(216, 60%, 99%)
CMYK	cmyk(59.5%, 36.1%, 0%, 1.2%)
CIE-LAB	lab(66.01, 7.55, -51.05)
CIE-LCH	lch(66.01, 51.61, 278.42°)
OKLab	oklab(70.91% -0.0287 -0.1447)
OKLCH	oklch(70.91% 0.148 258.8)
XYZ	xyz(35.7889, 35.3396, 97.0118)
Luminance	0.3534 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A1FC #FCC166

analogous

#66ECFC #66A1FC #7666FC

triadic

#66A1FC #FC66A1 #A1FC66

tetradic

#66A1FC #FC66EC #FCC166 #66FC76

square

#66A1FC #FC66EC #FCC166 #66FC76

split-complementary

#66A1FC #FC7666 #ECFC66

monochromatic

#045CE3 #2A7CFB #66A1FC #A2C6FD #DEEBFE

Accessibility & contrast

On white

2.60

#66A1FC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.07

#66A1FC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A1FC

8.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A1FC	#FFFFFF	#000000	##000000
##66A1FC	1.00	2.60	8.07	8.07
#FFFFFF	2.60	1.00	21.00	21.00
#000000	8.07	21.00	1.00	1.00
##000000	8.07	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7AA8FF

Deuteranopia (green-blind)

#669AFA

Tritanopia (blue-blind)

#00B6C3

Achromatopsia (no color)

#A0A0A0

Design tokens & code

CSS

--color: #66a1fc;
/* rgb */ color: rgb(102, 161, 252);
/* oklch */ color: oklch(70.9% 0.148 258.8);

Tailwind

colors: {
  custom: {
    50: '#9dbcfe',
    500: '#66a1fc',
    950: '#000000',
  },
}

SCSS

$custom: #66a1fc;
$custom-light: #9dbcfe;
$custom-dark: #000000;

JSON

{
  "hex": "#66a1fc",
  "rgb": {
    "r": 102,
    "g": 161,
    "b": 252
  },
  "hsl": {
    "h": 216.4,
    "s": 96.154,
    "l": 69.412
  },
  "oklch": {
    "l": 0.70905,
    "c": 0.14753,
    "h": 258.8
  },
  "luminance": 0.35343
}

Semantic roles & 50–950 ramp

primary

#66A1FC

secondary

#F5E4C9

accent

#8B00E6

background

#FAFBFF

surface

#F4F6FF

border

#CED0D7

text

#0F1118

muted

#7F8086

Preview Lab

Preview with #66A1FC

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

Preview Lab → · Contrast checker → · Palette generator →