#666CD7#666CD7

#666CD7 is a mid, vivid blue. Relative luminance 0.185; OKLCH L 58.0% C 0.161 H 277.7°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#666CD7
RGB	rgb(102, 108, 215)
HSL	hsl(237, 59%, 62%)
HSV	hsv(237, 53%, 84%)
CMYK	cmyk(52.6%, 49.8%, 0%, 15.7%)
CIE-LAB	lab(50.04, 27.38, -55.92)
CIE-LCH	lch(50.04, 62.27, 296.08°)
OKLab	oklab(58% 0.0216 -0.1595)
OKLCH	oklch(58% 0.161 277.7)
XYZ	xyz(23.1039, 18.4548, 66.6215)
Luminance	0.1846 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666CD7 #D7D166

analogous

#66A5D7 #666CD7 #9966D7

triadic

#666CD7 #D7666C #6CD766

tetradic

#666CD7 #D766A5 #D7D166 #66D799

square

#666CD7 #D766A5 #D7D166 #66D799

split-complementary

#666CD7 #D79966 #A5D766

monochromatic

#282E9A #353DCA #666CD7 #979BE4 #C7C9F0

Accessibility & contrast

On white

4.48

#666CD7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.69

#666CD7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666CD7

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666CD7	#FFFFFF	#000000	##000000
##666CD7	1.00	4.48	4.69	4.69
#FFFFFF	4.48	1.00	21.00	21.00
#000000	4.69	21.00	1.00	1.00
##000000	4.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#377CDB

Deuteranopia (green-blind)

#2A73D5

Tritanopia (blue-blind)

#348497

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #666cd7;
/* rgb */ color: rgb(102, 108, 215);
/* oklch */ color: oklch(58.0% 0.161 277.7);

Tailwind

colors: {
  custom: {
    50: '#9996e4',
    500: '#666cd7',
    950: '#000000',
  },
}

SCSS

$custom: #666cd7;
$custom-light: #9996e4;
$custom-dark: #000000;

JSON

{
  "hex": "#666cd7",
  "rgb": {
    "r": 102,
    "g": 108,
    "b": 215
  },
  "hsl": {
    "h": 236.814,
    "s": 58.549,
    "l": 62.157
  },
  "oklch": {
    "l": 0.58001,
    "c": 0.16097,
    "h": 277.7
  },
  "luminance": 0.18456
}

Semantic roles & 50–950 ramp

primary

#666CD7

secondary

#E1DFB8

accent

#BD1FC6

background

#F9F9FE

surface

#F2F1FC

border

#CCCBD5

text

#0F0D16

muted

#7E7E84

Preview Lab

Preview with #666CD7

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

Preview Lab → · Contrast checker → · Palette generator →