#666CF2#666CF2

#666CF2 is a mid, vivid blue. Relative luminance 0.200; OKLCH L 59.9% C 0.197 H 276.7°. Best body text is #000000 at 4.99:1 contrast (WCAG AA passes).

Color values

HEX	#666CF2
RGB	rgb(102, 108, 242)
HSL	hsl(237, 84%, 67%)
HSV	hsv(237, 58%, 95%)
CMYK	cmyk(57.9%, 55.4%, 0%, 5.1%)
CIE-LAB	lab(51.79, 35.93, -68.30)
CIE-LCH	lch(51.79, 77.17, 297.75°)
OKLab	oklab(59.87% 0.0231 -0.1959)
OKLCH	oklch(59.87% 0.197 276.7)
XYZ	xyz(26.8639, 19.9587, 86.4240)
Luminance	0.1996 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666CF2 #F2EC66

analogous

#66B2F2 #666CF2 #A666F2

triadic

#666CF2 #F2666C #6CF266

tetradic

#666CF2 #F266B2 #F2EC66 #66F2A6

square

#666CF2 #F266B2 #F2EC66 #66F2A6

split-complementary

#666CF2 #F2A666 #B2F266

monochromatic

#1119CC #2E36ED #666CF2 #9EA2F7 #D7D8FC

Accessibility & contrast

On white

4.21

#666CF2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.99

#666CF2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666CF2

4.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666CF2	#FFFFFF	#000000	##000000
##666CF2	1.00	4.21	4.99	4.99
#FFFFFF	4.21	1.00	21.00	21.00
#000000	4.99	21.00	1.00	1.00
##000000	4.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0081F7

Deuteranopia (green-blind)

#0076EF

Tritanopia (blue-blind)

#008CA5

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #666cf2;
/* rgb */ color: rgb(102, 108, 242);
/* oklch */ color: oklch(59.9% 0.197 276.7);

Tailwind

colors: {
  custom: {
    50: '#9d96f7',
    500: '#666cf2',
    950: '#000000',
  },
}

SCSS

$custom: #666cf2;
$custom-light: #9d96f7;
$custom-dark: #000000;

JSON

{
  "hex": "#666cf2",
  "rgb": {
    "r": 102,
    "g": 108,
    "b": 242
  },
  "hsl": {
    "h": 237.429,
    "s": 84.337,
    "l": 67.451
  },
  "oklch": {
    "l": 0.59868,
    "c": 0.19727,
    "h": 276.7
  },
  "luminance": 0.19961
}

Semantic roles & 50–950 ramp

primary

#666CF2

secondary

#F0EEC4

accent

#D705E1

background

#FAF9FF

surface

#F4F2FF

border

#CECCD7

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #666CF2

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

Preview Lab → · Contrast checker → · Palette generator →