#664EFF#664EFF

#664EFF is a mid, highly saturated blue. Relative luminance 0.155; OKLCH L 56.2% C 0.248 H 281.0°. Best body text is #FFFFFF at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#664EFF
RGB	rgb(102, 78, 255)
HSL	hsl(248, 100%, 65%)
HSV	hsv(248, 69%, 100%)
CMYK	cmyk(60%, 69.4%, 0%, 0%)
CIE-LAB	lab(46.30, 57.07, -84.49)
CIE-LCH	lch(46.30, 101.96, 304.04°)
OKLab	oklab(56.17% 0.0472 -0.2436)
OKLCH	oklch(56.17% 0.248 281)
XYZ	xyz(26.2482, 15.4917, 96.1954)
Luminance	0.1549 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#664EFF #E7FF4E

analogous

#4E8EFF #664EFF #BF4EFF

triadic

#664EFF #FF664E #4EFF66

tetradic

#664EFF #FF4E8E #E7FF4E #4EFFBF

square

#664EFF #FF4E8E #E7FF4E #4EFFBF

split-complementary

#664EFF #FFBF4E #8EFF4E

monochromatic

#1D00D3 #3111FF #664EFF #9B8BFF #D0C8FF

Accessibility & contrast

On white

5.12

#664EFF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.10

#664EFF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #664EFF

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##664EFF	#FFFFFF	#000000	##FFFFFF
##664EFF	1.00	5.12	4.10	5.12
#FFFFFF	5.12	1.00	21.00	1.00
#000000	4.10	21.00	1.00	21.00
##FFFFFF	5.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0074FF

Deuteranopia (green-blind)

#0067FC

Tritanopia (blue-blind)

#007EA1

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #664eff;
/* rgb */ color: rgb(102, 78, 255);
/* oklch */ color: oklch(56.2% 0.248 281.0);

Tailwind

colors: {
  custom: {
    50: '#a182ff',
    500: '#664eff',
    950: '#000000',
  },
}

SCSS

$custom: #664eff;
$custom-light: #a182ff;
$custom-dark: #000000;

JSON

{
  "hex": "#664eff",
  "rgb": {
    "r": 102,
    "g": 78,
    "b": 255
  },
  "hsl": {
    "h": 248.136,
    "s": 100,
    "l": 65.294
  },
  "oklch": {
    "l": 0.5617,
    "c": 0.24812,
    "h": 281
  },
  "luminance": 0.15494
}

Semantic roles & 50–950 ramp

primary

#664EFF

secondary

#EAF2B7

accent

#E600C6

background

#FAF8FF

surface

#F4EFFF

border

#CECAD7

text

#100B18

muted

#7F7C86

Preview Lab

Preview with #664EFF

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

Preview Lab → · Contrast checker → · Palette generator →