#666FF7#666FF7

#666FF7 is a mid, highly saturated blue. Relative luminance 0.209; OKLCH L 60.8% C 0.200 H 275.8°. Best body text is #000000 at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#666FF7
RGB	rgb(102, 111, 247)
HSL	hsl(236, 90%, 68%)
HSV	hsv(236, 59%, 97%)
CMYK	cmyk(58.7%, 55.1%, 0%, 3.1%)
CIE-LAB	lab(52.85, 35.73, -69.37)
CIE-LCH	lch(52.85, 78.03, 297.25°)
OKLab	oklab(60.76% 0.0204 -0.199)
OKLCH	oklch(60.76% 0.2 275.8)
XYZ	xyz(27.9470, 20.9069, 90.5404)
Luminance	0.2091 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666FF7 #F7EE66

analogous

#66B7F7 #666FF7 #A566F7

triadic

#666FF7 #F7666F #6FF766

tetradic

#666FF7 #F766B7 #F7EE66 #66F7A5

square

#666FF7 #F766B7 #F7EE66 #66F7A5

split-complementary

#666FF7 #F7A566 #B7F766

monochromatic

#0B18D7 #2C38F4 #666FF7 #A0A6FA #DADCFD

Accessibility & contrast

On white

4.05

#666FF7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.18

#666FF7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666FF7

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666FF7	#FFFFFF	#000000	##000000
##666FF7	1.00	4.05	5.18	5.18
#FFFFFF	4.05	1.00	21.00	21.00
#000000	5.18	21.00	1.00	1.00
##000000	5.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0084FC

Deuteranopia (green-blind)

#0078F4

Tritanopia (blue-blind)

#008FA8

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #666ff7;
/* rgb */ color: rgb(102, 111, 247);
/* oklch */ color: oklch(60.8% 0.200 275.8);

Tailwind

colors: {
  custom: {
    50: '#9e98fb',
    500: '#666ff7',
    950: '#000000',
  },
}

SCSS

$custom: #666ff7;
$custom-light: #9e98fb;
$custom-dark: #000000;

JSON

{
  "hex": "#666ff7",
  "rgb": {
    "r": 102,
    "g": 111,
    "b": 247
  },
  "hsl": {
    "h": 236.276,
    "s": 90.062,
    "l": 68.431
  },
  "oklch": {
    "l": 0.60763,
    "c": 0.20009,
    "h": 275.8
  },
  "luminance": 0.20909
}

Semantic roles & 50–950 ramp

primary

#666FF7

secondary

#F2F0C7

accent

#D700E6

background

#FAF9FF

surface

#F4F2FF

border

#CECCD7

text

#100D17

muted

#7F7E85

Preview Lab

Preview with #666FF7

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

Preview Lab → · Contrast checker → · Palette generator →