#666BF9#666BF9

#666BF9 is a mid, highly saturated blue. Relative luminance 0.202; OKLCH L 60.2% C 0.208 H 276.7°. Best body text is #000000 at 5.04:1 contrast (WCAG AA passes).

Color values

HEX	#666BF9
RGB	rgb(102, 107, 249)
HSL	hsl(238, 92%, 69%)
HSV	hsv(238, 59%, 98%)
CMYK	cmyk(59%, 57%, 0%, 2.4%)
CIE-LAB	lab(52.04, 38.76, -71.79)
CIE-LCH	lch(52.04, 81.59, 298.36°)
OKLab	oklab(60.2% 0.0241 -0.2062)
OKLCH	oklch(60.2% 0.208 276.7)
XYZ	xyz(27.8305, 20.1776, 92.0323)
Luminance	0.2018 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666BF9 #F9F466

analogous

#66B5F9 #666BF9 #AB66F9

triadic

#666BF9 #F9666B #6BF966

tetradic

#666BF9 #F966B5 #F9F466 #66F9AB

square

#666BF9 #F966B5 #F9F466 #66F9AB

split-complementary

#666BF9 #F9AB66 #B5F966

monochromatic

#0910DC #2B32F7 #666BF9 #A1A4FB #DCDDFE

Accessibility & contrast

On white

4.17

#666BF9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.04

#666BF9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666BF9

5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666BF9	#FFFFFF	#000000	##000000
##666BF9	1.00	4.17	5.04	5.04
#FFFFFF	4.17	1.00	21.00	21.00
#000000	5.04	21.00	1.00	1.00
##000000	5.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0082FE

Deuteranopia (green-blind)

#0076F6

Tritanopia (blue-blind)

#008DA8

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #666bf9;
/* rgb */ color: rgb(102, 107, 249);
/* oklch */ color: oklch(60.2% 0.208 276.7);

Tailwind

colors: {
  custom: {
    50: '#9e95fc',
    500: '#666bf9',
    950: '#000000',
  },
}

SCSS

$custom: #666bf9;
$custom-light: #9e95fc;
$custom-dark: #000000;

JSON

{
  "hex": "#666bf9",
  "rgb": {
    "r": 102,
    "g": 107,
    "b": 249
  },
  "hsl": {
    "h": 237.959,
    "s": 92.453,
    "l": 68.824
  },
  "oklch": {
    "l": 0.60204,
    "c": 0.20761,
    "h": 276.7
  },
  "luminance": 0.2018
}

Semantic roles & 50–950 ramp

primary

#666BF9

secondary

#F3F2C8

accent

#DE00E6

background

#FAF9FF

surface

#F4F1FF

border

#CECBD7

text

#100D18

muted

#7F7E86

Preview Lab

Preview with #666BF9

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

Preview Lab → · Contrast checker → · Palette generator →