#666BF2#666BF2

#666BF2 is a mid, vivid blue. Relative luminance 0.198; OKLCH L 59.7% C 0.199 H 276.9°. Best body text is #000000 at 4.95:1 contrast (WCAG AA passes).

Color values

HEX	#666BF2
RGB	rgb(102, 107, 242)
HSL	hsl(238, 84%, 67%)
HSV	hsv(238, 58%, 95%)
CMYK	cmyk(57.9%, 55.8%, 0%, 5.1%)
CIE-LAB	lab(51.55, 36.53, -68.68)
CIE-LCH	lch(51.55, 77.79, 298.01°)
OKLab	oklab(59.69% 0.024 -0.1971)
OKLCH	oklch(59.69% 0.199 276.9)
XYZ	xyz(26.7590, 19.7490, 86.3890)
Luminance	0.1975 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666BF2 #F2ED66

analogous

#66B1F2 #666BF2 #A766F2

triadic

#666BF2 #F2666B #6BF266

tetradic

#666BF2 #F266B1 #F2ED66 #66F2A7

square

#666BF2 #F266B1 #F2ED66 #66F2A7

split-complementary

#666BF2 #F2A766 #B1F266

monochromatic

#1118CC #2E34ED #666BF2 #9EA2F7 #D7D8FC

Accessibility & contrast

On white

4.24

#666BF2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.95

#666BF2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666BF2

4.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666BF2	#FFFFFF	#000000	##000000
##666BF2	1.00	4.24	4.95	4.95
#FFFFFF	4.24	1.00	21.00	21.00
#000000	4.95	21.00	1.00	1.00
##000000	4.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0081F7

Deuteranopia (green-blind)

#0075EF

Tritanopia (blue-blind)

#008BA4

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #666bf2;
/* rgb */ color: rgb(102, 107, 242);
/* oklch */ color: oklch(59.7% 0.199 276.9);

Tailwind

colors: {
  custom: {
    50: '#9d95f7',
    500: '#666bf2',
    950: '#000000',
  },
}

SCSS

$custom: #666bf2;
$custom-light: #9d95f7;
$custom-dark: #000000;

JSON

{
  "hex": "#666bf2",
  "rgb": {
    "r": 102,
    "g": 107,
    "b": 242
  },
  "hsl": {
    "h": 237.857,
    "s": 84.337,
    "l": 67.451
  },
  "oklch": {
    "l": 0.5969,
    "c": 0.19852,
    "h": 276.9
  },
  "luminance": 0.19751
}

Semantic roles & 50–950 ramp

primary

#666BF2

secondary

#F0EEC4

accent

#D905E1

background

#FAF9FF

surface

#F4F1FF

border

#CECBD7

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #666BF2

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

Preview Lab → · Contrast checker → · Palette generator →