#665EE3#665EE3

#665EE3 is a mid, vivid blue. Relative luminance 0.164; OKLCH L 56.3% C 0.195 H 280.8°. Best body text is #FFFFFF at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#665EE3
RGB	rgb(102, 94, 227)
HSL	hsl(244, 70%, 63%)
HSV	hsv(244, 59%, 89%)
CMYK	cmyk(55.1%, 58.6%, 0%, 11%)
CIE-LAB	lab(47.46, 39.57, -66.89)
CIE-LCH	lch(47.46, 77.72, 300.61°)
OKLab	oklab(56.33% 0.0366 -0.1919)
OKLCH	oklch(56.33% 0.195 280.8)
XYZ	xyz(23.3430, 16.3748, 74.5887)
Luminance	0.1638 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665EE3 #DBE35E

analogous

#5E98E3 #665EE3 #A85EE3

triadic

#665EE3 #E3665E #5EE366

tetradic

#665EE3 #E35E98 #DBE35E #5EE3A8

square

#665EE3 #E35E98 #DBE35E #5EE3A8

split-complementary

#665EE3 #E3A85E #98E35E

monochromatic

#261DA9 #342ADA #665EE3 #9892EC #C9C6F5

Accessibility & contrast

On white

4.91

#665EE3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.28

#665EE3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665EE3

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665EE3	#FFFFFF	#000000	##FFFFFF
##665EE3	1.00	4.91	4.28	4.91
#FFFFFF	4.91	1.00	21.00	1.00
#000000	4.28	21.00	1.00	21.00
##FFFFFF	4.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0075E7

Deuteranopia (green-blind)

#006CE0

Tritanopia (blue-blind)

#287E97

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #665ee3;
/* rgb */ color: rgb(102, 94, 227);
/* oklch */ color: oklch(56.3% 0.195 280.8);

Tailwind

colors: {
  custom: {
    50: '#9c8ced',
    500: '#665ee3',
    950: '#000000',
  },
}

SCSS

$custom: #665ee3;
$custom-light: #9c8ced;
$custom-dark: #000000;

JSON

{
  "hex": "#665ee3",
  "rgb": {
    "r": 102,
    "g": 94,
    "b": 227
  },
  "hsl": {
    "h": 243.609,
    "s": 70.37,
    "l": 62.941
  },
  "oklch": {
    "l": 0.5633,
    "c": 0.19533,
    "h": 280.8
  },
  "luminance": 0.16376
}

Semantic roles & 50–950 ramp

primary

#665EE3

secondary

#E3E6B6

accent

#D213C7

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0C16

muted

#7F7D84

Preview Lab

Preview with #665EE3

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

Preview Lab → · Contrast checker → · Palette generator →