#666CFA#666CFA

#666CFA is a mid, highly saturated blue. Relative luminance 0.205; OKLCH L 60.5% C 0.208 H 276.4°. Best body text is #000000 at 5.09:1 contrast (WCAG AA passes).

Color values

HEX	#666CFA
RGB	rgb(102, 108, 250)
HSL	hsl(238, 94%, 69%)
HSV	hsv(238, 59%, 98%)
CMYK	cmyk(59.2%, 56.8%, 0%, 2%)
CIE-LAB	lab(52.34, 38.48, -71.85)
CIE-LCH	lch(52.34, 81.51, 298.17°)
OKLab	oklab(60.45% 0.0232 -0.2064)
OKLCH	oklch(60.45% 0.208 276.4)
XYZ	xyz(28.0918, 20.4499, 92.8908)
Luminance	0.2045 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666CFA #FAF466

analogous

#66B6FA #666CFA #AA66FA

triadic

#666CFA #FA666C #6CFA66

tetradic

#666CFA #FA66B6 #FAF466 #66FAAA

square

#666CFA #FA66B6 #FAF466 #66FAAA

split-complementary

#666CFA #FAAA66 #B6FA66

monochromatic

#0710DE #2B33F8 #666CFA #A1A5FC #DDDEFE

Accessibility & contrast

On white

4.13

#666CFA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.09

#666CFA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666CFA

5.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666CFA	#FFFFFF	#000000	##000000
##666CFA	1.00	4.13	5.09	5.09
#FFFFFF	4.13	1.00	21.00	21.00
#000000	5.09	21.00	1.00	1.00
##000000	5.09	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0083FF

Deuteranopia (green-blind)

#0077F7

Tritanopia (blue-blind)

#008EA9

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #666cfa;
/* rgb */ color: rgb(102, 108, 250);
/* oklch */ color: oklch(60.5% 0.208 276.4);

Tailwind

colors: {
  custom: {
    50: '#9e96fd',
    500: '#666cfa',
    950: '#000000',
  },
}

SCSS

$custom: #666cfa;
$custom-light: #9e96fd;
$custom-dark: #000000;

JSON

{
  "hex": "#666cfa",
  "rgb": {
    "r": 102,
    "g": 108,
    "b": 250
  },
  "hsl": {
    "h": 237.568,
    "s": 93.671,
    "l": 69.02
  },
  "oklch": {
    "l": 0.60452,
    "c": 0.20768,
    "h": 276.4
  },
  "luminance": 0.20452
}

Semantic roles & 50–950 ramp

primary

#666CFA

secondary

#F4F2C8

accent

#DC00E6

background

#FAF9FF

surface

#F4F2FF

border

#CECCD7

text

#100D18

muted

#7F7E86

Preview Lab

Preview with #666CFA

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

Preview Lab → · Contrast checker → · Palette generator →