#66A4FE#66A4FE

#66A4FE is a light, vivid blue. Relative luminance 0.365; OKLCH L 71.6% C 0.147 H 257.7°. Best body text is #000000 at 8.31:1 contrast (WCAG AA passes).

Color values

HEX	#66A4FE
RGB	rgb(102, 164, 254)
HSL	hsl(216, 99%, 70%)
HSV	hsv(216, 60%, 100%)
CMYK	cmyk(59.8%, 35.4%, 0%, 0.4%)
CIE-LAB	lab(66.92, 6.47, -50.70)
CIE-LCH	lch(66.92, 51.11, 277.27°)
OKLab	oklab(71.64% -0.0313 -0.1437)
OKLCH	oklch(71.64% 0.147 257.7)
XYZ	xyz(36.6380, 36.5282, 98.8666)
Luminance	0.3653 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A4FE #FEC066

analogous

#66F0FE #66A4FE #7466FE

triadic

#66A4FE #FE66A4 #A4FE66

tetradic

#66A4FE #FE66F0 #FEC066 #66FE74

square

#66A4FE #FE66F0 #FEC066 #66FE74

split-complementary

#66A4FE #FE7466 #F0FE66

monochromatic

#0260E8 #2980FE #66A4FE #A3C8FE #E0ECFF

Accessibility & contrast

On white

2.53

#66A4FE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.31

#66A4FE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A4FE

8.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A4FE	#FFFFFF	#000000	##000000
##66A4FE	1.00	2.53	8.31	8.31
#FFFFFF	2.53	1.00	21.00	21.00
#000000	8.31	21.00	1.00	1.00
##000000	8.31	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7EABFF

Deuteranopia (green-blind)

#699CFC

Tritanopia (blue-blind)

#00B8C5

Achromatopsia (no color)

#A3A3A3

Design tokens & code

CSS

--color: #66a4fe;
/* rgb */ color: rgb(102, 164, 254);
/* oklch */ color: oklch(71.6% 0.147 257.7);

Tailwind

colors: {
  custom: {
    50: '#9dbeff',
    500: '#66a4fe',
    950: '#000000',
  },
}

SCSS

$custom: #66a4fe;
$custom-light: #9dbeff;
$custom-dark: #000000;

JSON

{
  "hex": "#66a4fe",
  "rgb": {
    "r": 102,
    "g": 164,
    "b": 254
  },
  "hsl": {
    "h": 215.526,
    "s": 98.701,
    "l": 69.804
  },
  "oklch": {
    "l": 0.71644,
    "c": 0.14703,
    "h": 257.7
  },
  "luminance": 0.36531
}

Semantic roles & 50–950 ramp

primary

#66A4FE

secondary

#F5E4CA

accent

#8800E6

background

#FAFBFF

surface

#F4F6FF

border

#CED0D7

text

#0F1218

muted

#7F8186

Preview Lab

Preview with #66A4FE

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

Preview Lab → · Contrast checker → · Palette generator →