#664EE5#664EE5

#664EE5 is a mid, highly saturated blue. Relative luminance 0.139; OKLCH L 53.9% C 0.217 H 283.6°. Best body text is #FFFFFF at 5.55:1 contrast (WCAG AA passes).

Color values

HEX	#664EE5
RGB	rgb(102, 78, 229)
HSL	hsl(250, 74%, 60%)
HSV	hsv(250, 66%, 90%)
CMYK	cmyk(55.5%, 65.9%, 0%, 10.2%)
CIE-LAB	lab(44.13, 49.39, -73.44)
CIE-LCH	lch(44.13, 88.51, 303.92°)
OKLab	oklab(53.95% 0.0512 -0.2112)
OKLCH	oklch(53.95% 0.217 283.6)
XYZ	xyz(22.3424, 13.9293, 75.6249)
Luminance	0.1393 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#664EE5 #CDE54E

analogous

#4E82E5 #664EE5 #B14EE5

triadic

#664EE5 #E5664E #4EE566

tetradic

#664EE5 #E54E82 #CDE54E #4EE5B1

square

#664EE5 #E54E82 #CDE54E #4EE5B1

split-complementary

#664EE5 #E5B14E #82E54E

monochromatic

#2D18A1 #3D1FD6 #664EE5 #9483ED #C2B9F5

Accessibility & contrast

On white

5.55

#664EE5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.79

#664EE5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #664EE5

5.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##664EE5	#FFFFFF	#000000	##FFFFFF
##664EE5	1.00	5.55	3.79	5.55
#FFFFFF	5.55	1.00	21.00	1.00
#000000	3.79	21.00	1.00	21.00
##FFFFFF	5.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006DEA

Deuteranopia (green-blind)

#0063E2

Tritanopia (blue-blind)

#287493

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #664ee5;
/* rgb */ color: rgb(102, 78, 229);
/* oklch */ color: oklch(53.9% 0.217 283.6);

Tailwind

colors: {
  custom: {
    50: '#9d81ee',
    500: '#664ee5',
    950: '#000000',
  },
}

SCSS

$custom: #664ee5;
$custom-light: #9d81ee;
$custom-dark: #000000;

JSON

{
  "hex": "#664ee5",
  "rgb": {
    "r": 102,
    "g": 78,
    "b": 229
  },
  "hsl": {
    "h": 249.536,
    "s": 74.384,
    "l": 60.196
  },
  "oklch": {
    "l": 0.53947,
    "c": 0.21731,
    "h": 283.6
  },
  "luminance": 0.13931
}

Semantic roles & 50–950 ramp

primary

#664EE5

secondary

#DBE4AA

accent

#D70FB7

background

#FAF8FE

surface

#F4EFFD

border

#CECAD5

text

#100A17

muted

#7F7C85

Preview Lab

Preview with #664EE5

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

Preview Lab → · Contrast checker → · Palette generator →