#664FEF#664FEF

#664FEF is a mid, highly saturated blue. Relative luminance 0.146; OKLCH L 54.9% C 0.228 H 282.4°. Best body text is #FFFFFF at 5.34:1 contrast (WCAG AA passes).

Color values

HEX	#664FEF
RGB	rgb(102, 79, 239)
HSL	hsl(249, 83%, 62%)
HSV	hsv(249, 67%, 94%)
CMYK	cmyk(57.3%, 66.9%, 0%, 6.3%)
CIE-LAB	lab(45.15, 51.81, -77.43)
CIE-LCH	lch(45.15, 93.16, 303.79°)
OKLab	oklab(54.93% 0.049 -0.2229)
OKLCH	oklch(54.93% 0.228 282.4)
XYZ	xyz(23.8506, 14.6472, 83.2150)
Luminance	0.1465 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#664FEF #D8EF4F

analogous

#4F88EF #664FEF #B64FEF

triadic

#664FEF #EF664F #4FEF66

tetradic

#664FEF #EF4F88 #D8EF4F #4FEFB6

square

#664FEF #EF4F88 #D8EF4F #4FEFB6

split-complementary

#664FEF #EFB64F #88EF4F

monochromatic

#2810B3 #3517EA #664FEF #9787F4 #C8BFF9

Accessibility & contrast

On white

5.34

#664FEF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.93

#664FEF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #664FEF

5.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##664FEF	#FFFFFF	#000000	##FFFFFF
##664FEF	1.00	5.34	3.93	5.34
#FFFFFF	5.34	1.00	21.00	1.00
#000000	3.93	21.00	1.00	21.00
##FFFFFF	5.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0070F4

Deuteranopia (green-blind)

#0065EC

Tritanopia (blue-blind)

#137999

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #664fef;
/* rgb */ color: rgb(102, 79, 239);
/* oklch */ color: oklch(54.9% 0.228 282.4);

Tailwind

colors: {
  custom: {
    50: '#9f82f5',
    500: '#664fef',
    950: '#000000',
  },
}

SCSS

$custom: #664fef;
$custom-light: #9f82f5;
$custom-dark: #000000;

JSON

{
  "hex": "#664fef",
  "rgb": {
    "r": 102,
    "g": 79,
    "b": 239
  },
  "hsl": {
    "h": 248.625,
    "s": 83.333,
    "l": 62.353
  },
  "oklch": {
    "l": 0.5493,
    "c": 0.22821,
    "h": 282.4
  },
  "luminance": 0.14649
}

Semantic roles & 50–950 ramp

primary

#664FEF

secondary

#E2EAB0

accent

#E006C0

background

#FAF8FF

surface

#F4EFFF

border

#CECAD7

text

#100B17

muted

#7F7C85

Preview Lab

Preview with #664FEF

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

Preview Lab → · Contrast checker → · Palette generator →