#666AF8#666AF8

#666AF8 is a mid, highly saturated blue. Relative luminance 0.199; OKLCH L 60.0% C 0.208 H 276.9°. Best body text is #000000 at 4.98:1 contrast (WCAG AA passes).

Color values

HEX	#666AF8
RGB	rgb(102, 106, 248)
HSL	hsl(238, 91%, 69%)
HSV	hsv(238, 59%, 97%)
CMYK	cmyk(58.9%, 57.3%, 0%, 2.7%)
CIE-LAB	lab(51.73, 39.03, -71.73)
CIE-LCH	lch(51.73, 81.66, 298.55°)
OKLab	oklab(59.96% 0.025 -0.206)
OKLCH	oklch(59.96% 0.208 276.9)
XYZ	xyz(27.5713, 19.9081, 91.1785)
Luminance	0.1991 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666AF8 #F8F466

analogous

#66B3F8 #666AF8 #AB66F8

triadic

#666AF8 #F8666A #6AF866

tetradic

#666AF8 #F866B3 #F8F466 #66F8AB

square

#666AF8 #F866B3 #F8F466 #66F8AB

split-complementary

#666AF8 #F8AB66 #B3F866

monochromatic

#0A10DA #2B31F5 #666AF8 #A1A3FB #DBDCFD

Accessibility & contrast

On white

4.22

#666AF8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.98

#666AF8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666AF8

4.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666AF8	#FFFFFF	#000000	##000000
##666AF8	1.00	4.22	4.98	4.98
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.98	21.00	1.00	1.00
##000000	4.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0082FD

Deuteranopia (green-blind)

#0075F5

Tritanopia (blue-blind)

#008CA7

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #666af8;
/* rgb */ color: rgb(102, 106, 248);
/* oklch */ color: oklch(60.0% 0.208 276.9);

Tailwind

colors: {
  custom: {
    50: '#9e94fb',
    500: '#666af8',
    950: '#000000',
  },
}

SCSS

$custom: #666af8;
$custom-light: #9e94fb;
$custom-dark: #000000;

JSON

{
  "hex": "#666af8",
  "rgb": {
    "r": 102,
    "g": 106,
    "b": 248
  },
  "hsl": {
    "h": 238.356,
    "s": 91.25,
    "l": 68.627
  },
  "oklch": {
    "l": 0.59957,
    "c": 0.20755,
    "h": 276.9
  },
  "luminance": 0.1991
}

Semantic roles & 50–950 ramp

primary

#666AF8

secondary

#F3F1C7

accent

#DF00E6

background

#FAF9FF

surface

#F4F1FF

border

#CECBD7

text

#100D18

muted

#7F7E86

Preview Lab

Preview with #666AF8

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

Preview Lab → · Contrast checker → · Palette generator →