#664EF5#664EF5

#664EF5 is a mid, highly saturated blue. Relative luminance 0.149; OKLCH L 55.3% C 0.236 H 281.9°. Best body text is #FFFFFF at 5.29:1 contrast (WCAG AA passes).

Color values

HEX	#664EF5
RGB	rgb(102, 78, 245)
HSL	hsl(249, 89%, 63%)
HSV	hsv(249, 68%, 96%)
CMYK	cmyk(58.4%, 68.2%, 0%, 3.9%)
CIE-LAB	lab(45.45, 54.13, -80.31)
CIE-LCH	lch(45.45, 96.84, 303.98°)
OKLab	oklab(55.3% 0.0489 -0.2313)
OKLCH	oklch(55.3% 0.236 281.9)
XYZ	xyz(24.6802, 14.8645, 87.9371)
Luminance	0.1487 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#664EF5 #DDF54E

analogous

#4E89F5 #664EF5 #BA4EF5

triadic

#664EF5 #F5664E #4EF566

tetradic

#664EF5 #F54E89 #DDF54E #4EF5BA

square

#664EF5 #F54E89 #DDF54E #4EF5BA

split-complementary

#664EF5 #F5BA4E #89F54E

monochromatic

#240BBE #3414F2 #664EF5 #9888F8 #CAC2FC

Accessibility & contrast

On white

5.29

#664EF5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.97

#664EF5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #664EF5

5.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##664EF5	#FFFFFF	#000000	##FFFFFF
##664EF5	1.00	5.29	3.97	5.29
#FFFFFF	5.29	1.00	21.00	1.00
#000000	3.97	21.00	1.00	21.00
##FFFFFF	5.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0071FA

Deuteranopia (green-blind)

#0066F2

Tritanopia (blue-blind)

#007A9C

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #664ef5;
/* rgb */ color: rgb(102, 78, 245);
/* oklch */ color: oklch(55.3% 0.236 281.9);

Tailwind

colors: {
  custom: {
    50: '#a082fa',
    500: '#664ef5',
    950: '#000000',
  },
}

SCSS

$custom: #664ef5;
$custom-light: #a082fa;
$custom-dark: #000000;

JSON

{
  "hex": "#664ef5",
  "rgb": {
    "r": 102,
    "g": 78,
    "b": 245
  },
  "hsl": {
    "h": 248.623,
    "s": 89.305,
    "l": 63.333
  },
  "oklch": {
    "l": 0.553,
    "c": 0.23643,
    "h": 281.9
  },
  "luminance": 0.14866
}

Semantic roles & 50–950 ramp

primary

#664EF5

secondary

#E5EDB2

accent

#E600C5

background

#FAF8FF

surface

#F4EFFF

border

#CECAD7

text

#100A17

muted

#7F7C85

Preview Lab

Preview with #664EF5

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

Preview Lab → · Contrast checker → · Palette generator →