#664CEF#664CEF

#664CEF is a mid, highly saturated blue. Relative luminance 0.142; OKLCH L 54.5% C 0.232 H 282.8°. Best body text is #FFFFFF at 5.46:1 contrast (WCAG AA passes).

Color values

HEX	#664CEF
RGB	rgb(102, 76, 239)
HSL	hsl(250, 84%, 62%)
HSV	hsv(250, 68%, 94%)
CMYK	cmyk(57.3%, 68.2%, 0%, 6.3%)
CIE-LAB	lab(44.55, 53.43, -78.40)
CIE-LCH	lch(44.55, 94.88, 304.28°)
OKLab	oklab(54.5% 0.0514 -0.2257)
OKLCH	oklch(54.5% 0.232 282.8)
XYZ	xyz(23.6391, 14.2241, 83.1445)
Luminance	0.1423 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#664CEF #D5EF4C

analogous

#4C83EF #664CEF #B84CEF

triadic

#664CEF #EF664C #4CEF66

tetradic

#664CEF #EF4C83 #D5EF4C #4CEFB8

square

#664CEF #EF4C83 #D5EF4C #4CEFB8

split-complementary

#664CEF #EFB84C #83EF4C

monochromatic

#2910B1 #3715E9 #664CEF #9684F4 #C6BCF9

Accessibility & contrast

On white

5.46

#664CEF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.85

#664CEF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #664CEF

5.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##664CEF	#FFFFFF	#000000	##FFFFFF
##664CEF	1.00	5.46	3.85	5.46
#FFFFFF	5.46	1.00	21.00	1.00
#000000	3.85	21.00	1.00	21.00
##FFFFFF	5.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006FF4

Deuteranopia (green-blind)

#0064EC

Tritanopia (blue-blind)

#147798

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #664cef;
/* rgb */ color: rgb(102, 76, 239);
/* oklch */ color: oklch(54.5% 0.232 282.8);

Tailwind

colors: {
  custom: {
    50: '#9f80f5',
    500: '#664cef',
    950: '#000000',
  },
}

SCSS

$custom: #664cef;
$custom-light: #9f80f5;
$custom-dark: #000000;

JSON

{
  "hex": "#664cef",
  "rgb": {
    "r": 102,
    "g": 76,
    "b": 239
  },
  "hsl": {
    "h": 249.571,
    "s": 83.59,
    "l": 61.765
  },
  "oklch": {
    "l": 0.54503,
    "c": 0.23152,
    "h": 282.8
  },
  "luminance": 0.14226
}

Semantic roles & 50–950 ramp

primary

#664CEF

secondary

#E0EAAD

accent

#E005BD

background

#FAF8FF

surface

#F4EFFF

border

#CECAD7

text

#100A17

muted

#7F7C85

Preview Lab

Preview with #664CEF

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

Preview Lab → · Contrast checker → · Palette generator →