#664EEB#664EEB

#664EEB is a mid, highly saturated blue. Relative luminance 0.143; OKLCH L 54.4% C 0.225 H 283.0°. Best body text is #FFFFFF at 5.45:1 contrast (WCAG AA passes).

Color values

HEX	#664EEB
RGB	rgb(102, 78, 235)
HSL	hsl(249, 80%, 61%)
HSV	hsv(249, 67%, 92%)
CMYK	cmyk(56.6%, 66.8%, 0%, 7.8%)
CIE-LAB	lab(44.62, 51.17, -76.04)
CIE-LCH	lch(44.62, 91.66, 303.94°)
OKLab	oklab(54.45% 0.0504 -0.2188)
OKLCH	oklch(54.45% 0.225 283)
XYZ	xyz(23.1947, 14.2702, 80.1134)
Luminance	0.1427 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#664EEB #D3EB4E

analogous

#4E85EB #664EEB #B54EEB

triadic

#664EEB #EB664E #4EEB66

tetradic

#664EEB #EB4E85 #D3EB4E #4EEBB5

square

#664EEB #EB4E85 #D3EB4E #4EEBB5

split-complementary

#664EEB #EBB54E #85EB4E

monochromatic

#2B13AB #381AE2 #664EEB #9685F1 #C5BCF7

Accessibility & contrast

On white

5.45

#664EEB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.85

#664EEB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #664EEB

5.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##664EEB	#FFFFFF	#000000	##FFFFFF
##664EEB	1.00	5.45	3.85	5.45
#FFFFFF	5.45	1.00	21.00	1.00
#000000	3.85	21.00	1.00	21.00
##FFFFFF	5.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006FF0

Deuteranopia (green-blind)

#0064E8

Tritanopia (blue-blind)

#1D7796

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #664eeb;
/* rgb */ color: rgb(102, 78, 235);
/* oklch */ color: oklch(54.4% 0.225 283.0);

Tailwind

colors: {
  custom: {
    50: '#9e81f3',
    500: '#664eeb',
    950: '#000000',
  },
}

SCSS

$custom: #664eeb;
$custom-light: #9e81f3;
$custom-dark: #000000;

JSON

{
  "hex": "#664eeb",
  "rgb": {
    "r": 102,
    "g": 78,
    "b": 235
  },
  "hsl": {
    "h": 249.172,
    "s": 79.695,
    "l": 61.373
  },
  "oklch": {
    "l": 0.54448,
    "c": 0.22453,
    "h": 283
  },
  "luminance": 0.14272
}

Semantic roles & 50–950 ramp

primary

#664EEB

secondary

#DFE8AD

accent

#DC09BC

background

#FAF8FF

surface

#F4EFFE

border

#CECAD6

text

#100A17

muted

#7F7C85

Preview Lab

Preview with #664EEB

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

Preview Lab → · Contrast checker → · Palette generator →