#66A4FA#66A4FA

#66A4FA is a light, vivid cyan. Relative luminance 0.363; OKLCH L 71.4% C 0.142 H 256.9°. Best body text is #000000 at 8.26:1 contrast (WCAG AA passes).

Color values

HEX	#66A4FA
RGB	rgb(102, 164, 250)
HSL	hsl(215, 94%, 69%)
HSV	hsv(215, 59%, 98%)
CMYK	cmyk(59.2%, 34.4%, 0%, 2%)
CIE-LAB	lab(66.73, 5.19, -48.83)
CIE-LCH	lch(66.73, 49.10, 276.06°)
OKLab	oklab(71.43% -0.0323 -0.1382)
OKLCH	oklch(71.43% 0.142 256.9)
XYZ	xyz(36.0042, 36.2746, 95.5283)
Luminance	0.3628 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A4FA #FABC66

analogous

#66EEFA #66A4FA #7266FA

triadic

#66A4FA #FA66A4 #A4FA66

tetradic

#66A4FA #FA66EE #FABC66 #66FA72

square

#66A4FA #FA66EE #FABC66 #66FA72

split-complementary

#66A4FA #FA7266 #EEFA66

monochromatic

#0761DE #2B81F8 #66A4FA #A1C7FC #DDEAFE

Accessibility & contrast

On white

2.54

#66A4FA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.26

#66A4FA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A4FA

8.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A4FA	#FFFFFF	#000000	##000000
##66A4FA	1.00	2.54	8.26	8.26
#FFFFFF	2.54	1.00	21.00	21.00
#000000	8.26	21.00	1.00	1.00
##000000	8.26	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#80AAFE

Deuteranopia (green-blind)

#6C9CF8

Tritanopia (blue-blind)

#00B7C3

Achromatopsia (no color)

#A2A2A2

Design tokens & code

CSS

--color: #66a4fa;
/* rgb */ color: rgb(102, 164, 250);
/* oklch */ color: oklch(71.4% 0.142 256.9);

Tailwind

colors: {
  custom: {
    50: '#9dbefc',
    500: '#66a4fa',
    950: '#000000',
  },
}

SCSS

$custom: #66a4fa;
$custom-light: #9dbefc;
$custom-dark: #000000;

JSON

{
  "hex": "#66a4fa",
  "rgb": {
    "r": 102,
    "g": 164,
    "b": 250
  },
  "hsl": {
    "h": 214.865,
    "s": 93.671,
    "l": 69.02
  },
  "oklch": {
    "l": 0.71432,
    "c": 0.14192,
    "h": 256.9
  },
  "luminance": 0.36278
}

Semantic roles & 50–950 ramp

primary

#66A4FA

secondary

#F4E1C8

accent

#8500E6

background

#FAFBFF

surface

#F4F6FF

border

#CED0D7

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66A4FA

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

Preview Lab → · Contrast checker → · Palette generator →