#666FE2#666FE2

#666FE2 is a mid, vivid blue. Relative luminance 0.197; OKLCH L 59.3% C 0.172 H 276.4°. Best body text is #000000 at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#666FE2
RGB	rgb(102, 111, 226)
HSL	hsl(236, 68%, 64%)
HSV	hsv(236, 55%, 89%)
CMYK	cmyk(54.9%, 50.9%, 0%, 11.4%)
CIE-LAB	lab(51.48, 29.03, -59.84)
CIE-LCH	lch(51.48, 66.51, 295.88°)
OKLab	oklab(59.3% 0.0193 -0.171)
OKLCH	oklch(59.3% 0.172 276.4)
XYZ	xyz(24.8870, 19.6830, 74.4245)
Luminance	0.1968 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666FE2 #E2D966

analogous

#66ADE2 #666FE2 #9B66E2

triadic

#666FE2 #E2666F #6FE266

tetradic

#666FE2 #E266AD #E2D966 #66E29B

square

#666FE2 #E266AD #E2D966 #66E29B

split-complementary

#666FE2 #E29B66 #ADE266

monochromatic

#212BAD #333FD8 #666FE2 #999FEC #CDD0F6

Accessibility & contrast

On white

4.25

#666FE2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.94

#666FE2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666FE2

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666FE2	#FFFFFF	#000000	##000000
##666FE2	1.00	4.25	4.94	4.94
#FFFFFF	4.25	1.00	21.00	21.00
#000000	4.94	21.00	1.00	1.00
##000000	4.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3280E6

Deuteranopia (green-blind)

#1D76E0

Tritanopia (blue-blind)

#25899E

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #666fe2;
/* rgb */ color: rgb(102, 111, 226);
/* oklch */ color: oklch(59.3% 0.172 276.4);

Tailwind

colors: {
  custom: {
    50: '#9b98ec',
    500: '#666fe2',
    950: '#000000',
  },
}

SCSS

$custom: #666fe2;
$custom-light: #9b98ec;
$custom-dark: #000000;

JSON

{
  "hex": "#666fe2",
  "rgb": {
    "r": 102,
    "g": 111,
    "b": 226
  },
  "hsl": {
    "h": 235.645,
    "s": 68.132,
    "l": 64.314
  },
  "oklch": {
    "l": 0.593,
    "c": 0.17209,
    "h": 276.4
  },
  "luminance": 0.19685
}

Semantic roles & 50–950 ramp

primary

#666FE2

secondary

#E7E4BC

accent

#C315D0

background

#FAF9FE

surface

#F3F2FD

border

#CDCCD5

text

#0F0D16

muted

#7F7E84

Preview Lab

Preview with #666FE2

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

Preview Lab → · Contrast checker → · Palette generator →