#664FDD#664FDD

#664FDD is a mid, highly saturated blue. Relative luminance 0.136; OKLCH L 53.4% C 0.206 H 284.4°. Best body text is #FFFFFF at 5.63:1 contrast (WCAG AA passes).

Color values

HEX	#664FDD
RGB	rgb(102, 79, 221)
HSL	hsl(250, 68%, 59%)
HSV	hsv(250, 64%, 87%)
CMYK	cmyk(53.8%, 64.3%, 0%, 13.3%)
CIE-LAB	lab(43.71, 46.46, -69.59)
CIE-LCH	lch(43.71, 83.67, 303.73°)
OKLab	oklab(53.44% 0.0512 -0.1999)
OKLCH	oklch(53.44% 0.206 284.4)
XYZ	xyz(21.3227, 13.6360, 69.9010)
Luminance	0.1364 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#664FDD #C6DD4F

analogous

#4F7FDD #664FDD #AD4FDD

triadic

#664FDD #DD664F #4FDD66

tetradic

#664FDD #DD4F7F #C6DD4F #4FDDAD

square

#664FDD #DD4F7F #C6DD4F #4FDDAD

split-complementary

#664FDD #DDAD4F #7FDD4F

monochromatic

#301D95 #4127C8 #664FDD #9382E7 #BFB6F1

Accessibility & contrast

On white

5.63

#664FDD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.73

#664FDD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #664FDD

5.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##664FDD	#FFFFFF	#000000	##FFFFFF
##664FDD	1.00	5.63	3.73	5.63
#FFFFFF	5.63	1.00	21.00	1.00
#000000	3.73	21.00	1.00	21.00
##FFFFFF	5.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006BE1

Deuteranopia (green-blind)

#0063DA

Tritanopia (blue-blind)

#32728F

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #664fdd;
/* rgb */ color: rgb(102, 79, 221);
/* oklch */ color: oklch(53.4% 0.206 284.4);

Tailwind

colors: {
  custom: {
    50: '#9c82e9',
    500: '#664fdd',
    950: '#000000',
  },
}

SCSS

$custom: #664fdd;
$custom-light: #9c82e9;
$custom-dark: #000000;

JSON

{
  "hex": "#664fdd",
  "rgb": {
    "r": 102,
    "g": 79,
    "b": 221
  },
  "hsl": {
    "h": 249.718,
    "s": 67.619,
    "l": 58.824
  },
  "oklch": {
    "l": 0.53443,
    "c": 0.20633,
    "h": 284.4
  },
  "luminance": 0.13637
}

Semantic roles & 50–950 ramp

primary

#664FDD

secondary

#D7E0A8

accent

#EA3DCE

background

#FAF8FE

surface

#F4EFFD

border

#CECAD5

text

#0F0A16

muted

#7F7C84

Preview Lab

Preview with #664FDD

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

Preview Lab → · Contrast checker → · Palette generator →