#665EE4#665EE4

#665EE4 is a mid, vivid blue. Relative luminance 0.164; OKLCH L 56.4% C 0.197 H 280.7°. Best body text is #FFFFFF at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#665EE4
RGB	rgb(102, 94, 228)
HSL	hsl(244, 71%, 63%)
HSV	hsv(244, 59%, 89%)
CMYK	cmyk(55.3%, 58.8%, 0%, 10.6%)
CIE-LAB	lab(47.53, 39.88, -67.34)
CIE-LCH	lch(47.53, 78.26, 300.64°)
OKLab	oklab(56.41% 0.0366 -0.1932)
OKLCH	oklch(56.41% 0.197 280.7)
XYZ	xyz(23.4814, 16.4301, 75.3177)
Luminance	0.1643 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665EE4 #DCE45E

analogous

#5E99E4 #665EE4 #A95EE4

triadic

#665EE4 #E4665E #5EE466

tetradic

#665EE4 #E45E99 #DCE45E #5EE4A9

square

#665EE4 #E45E99 #DCE45E #5EE4A9

split-complementary

#665EE4 #E4A95E #99E45E

monochromatic

#251DAB #342ADB #665EE4 #9892ED #CAC7F6

Accessibility & contrast

On white

4.90

#665EE4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.29

#665EE4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665EE4

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665EE4	#FFFFFF	#000000	##FFFFFF
##665EE4	1.00	4.90	4.29	4.90
#FFFFFF	4.90	1.00	21.00	1.00
#000000	4.29	21.00	1.00	21.00
##FFFFFF	4.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0076E8

Deuteranopia (green-blind)

#006CE1

Tritanopia (blue-blind)

#267E98

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #665ee4;
/* rgb */ color: rgb(102, 94, 228);
/* oklch */ color: oklch(56.4% 0.197 280.7);

Tailwind

colors: {
  custom: {
    50: '#9c8ced',
    500: '#665ee4',
    950: '#000000',
  },
}

SCSS

$custom: #665ee4;
$custom-light: #9c8ced;
$custom-dark: #000000;

JSON

{
  "hex": "#665ee4",
  "rgb": {
    "r": 102,
    "g": 94,
    "b": 228
  },
  "hsl": {
    "h": 243.582,
    "s": 71.277,
    "l": 63.137
  },
  "oklch": {
    "l": 0.56405,
    "c": 0.19663,
    "h": 280.7
  },
  "luminance": 0.16432
}

Semantic roles & 50–950 ramp

primary

#665EE4

secondary

#E4E7B7

accent

#D312C8

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0C16

muted

#7F7D84

Preview Lab

Preview with #665EE4

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

Preview Lab → · Contrast checker → · Palette generator →