#66A3FA#66A3FA

#66A3FA is a light, vivid blue. Relative luminance 0.359; OKLCH L 71.2% C 0.143 H 257.4°. Best body text is #000000 at 8.18:1 contrast (WCAG AA passes).

Color values

HEX	#66A3FA
RGB	rgb(102, 163, 250)
HSL	hsl(215, 94%, 69%)
HSV	hsv(215, 59%, 98%)
CMYK	cmyk(59.2%, 34.8%, 0%, 2%)
CIE-LAB	lab(66.46, 5.76, -49.26)
CIE-LCH	lch(66.46, 49.59, 276.67°)
OKLab	oklab(71.22% -0.0312 -0.1395)
OKLCH	oklch(71.22% 0.143 257.4)
XYZ	xyz(35.8259, 35.9181, 95.4689)
Luminance	0.3592 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A3FA #FABD66

analogous

#66EDFA #66A3FA #7366FA

triadic

#66A3FA #FA66A3 #A3FA66

tetradic

#66A3FA #FA66ED #FABD66 #66FA73

square

#66A3FA #FA66ED #FABD66 #66FA73

split-complementary

#66A3FA #FA7366 #EDFA66

monochromatic

#0760DE #2B7FF8 #66A3FA #A1C7FC #DDEAFE

Accessibility & contrast

On white

2.57

#66A3FA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.18

#66A3FA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A3FA

8.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A3FA	#FFFFFF	#000000	##000000
##66A3FA	1.00	2.57	8.18	8.18
#FFFFFF	2.57	1.00	21.00	21.00
#000000	8.18	21.00	1.00	1.00
##000000	8.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7EA9FE

Deuteranopia (green-blind)

#6B9BF8

Tritanopia (blue-blind)

#00B7C3

Achromatopsia (no color)

#A2A2A2

Design tokens & code

CSS

--color: #66a3fa;
/* rgb */ color: rgb(102, 163, 250);
/* oklch */ color: oklch(71.2% 0.143 257.4);

Tailwind

colors: {
  custom: {
    50: '#9dbdfc',
    500: '#66a3fa',
    950: '#000000',
  },
}

SCSS

$custom: #66a3fa;
$custom-light: #9dbdfc;
$custom-dark: #000000;

JSON

{
  "hex": "#66a3fa",
  "rgb": {
    "r": 102,
    "g": 163,
    "b": 250
  },
  "hsl": {
    "h": 215.27,
    "s": 93.671,
    "l": 69.02
  },
  "oklch": {
    "l": 0.7122,
    "c": 0.14292,
    "h": 257.4
  },
  "luminance": 0.35921
}

Semantic roles & 50–950 ramp

primary

#66A3FA

secondary

#F4E2C8

accent

#8700E6

background

#FAFBFF

surface

#F4F6FF

border

#CED0D7

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66A3FA

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

Preview Lab → · Contrast checker → · Palette generator →