#665FE3#665FE3

#665FE3 is a mid, vivid blue. Relative luminance 0.166; OKLCH L 56.5% C 0.194 H 280.6°. Best body text is #FFFFFF at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#665FE3
RGB	rgb(102, 95, 227)
HSL	hsl(243, 70%, 63%)
HSV	hsv(243, 58%, 89%)
CMYK	cmyk(55.1%, 58.1%, 0%, 11%)
CIE-LAB	lab(47.69, 38.98, -66.51)
CIE-LCH	lch(47.69, 77.10, 300.37°)
OKLab	oklab(56.5% 0.0356 -0.1908)
OKLCH	oklch(56.5% 0.194 280.6)
XYZ	xyz(23.4325, 16.5538, 74.6186)
Luminance	0.1656 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665FE3 #DCE35F

analogous

#5F9AE3 #665FE3 #A85FE3

triadic

#665FE3 #E3665F #5FE366

tetradic

#665FE3 #E35F9A #DCE35F #5FE3A8

square

#665FE3 #E35F9A #DCE35F #5FE3A8

split-complementary

#665FE3 #E3A85F #9AE35F

monochromatic

#251EAA #342BDA #665FE3 #9893EC #CAC7F5

Accessibility & contrast

On white

4.87

#665FE3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.31

#665FE3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665FE3

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665FE3	#FFFFFF	#000000	##FFFFFF
##665FE3	1.00	4.87	4.31	4.87
#FFFFFF	4.87	1.00	21.00	1.00
#000000	4.31	21.00	1.00	21.00
##FFFFFF	4.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0076E7

Deuteranopia (green-blind)

#006CE0

Tritanopia (blue-blind)

#277E98

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #665fe3;
/* rgb */ color: rgb(102, 95, 227);
/* oklch */ color: oklch(56.5% 0.194 280.6);

Tailwind

colors: {
  custom: {
    50: '#9c8ded',
    500: '#665fe3',
    950: '#000000',
  },
}

SCSS

$custom: #665fe3;
$custom-light: #9c8ded;
$custom-dark: #000000;

JSON

{
  "hex": "#665fe3",
  "rgb": {
    "r": 102,
    "g": 95,
    "b": 227
  },
  "hsl": {
    "h": 243.182,
    "s": 70.213,
    "l": 63.137
  },
  "oklch": {
    "l": 0.565,
    "c": 0.19406,
    "h": 280.6
  },
  "luminance": 0.16555
}

Semantic roles & 50–950 ramp

primary

#665FE3

secondary

#E4E7B7

accent

#D213C8

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0C16

muted

#7F7D84

Preview Lab

Preview with #665FE3

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

Preview Lab → · Contrast checker → · Palette generator →