#665FE4#665FE4

#665FE4 is a mid, vivid blue. Relative luminance 0.166; OKLCH L 56.6% C 0.195 H 280.5°. Best body text is #FFFFFF at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#665FE4
RGB	rgb(102, 95, 228)
HSL	hsl(243, 71%, 63%)
HSV	hsv(243, 58%, 89%)
CMYK	cmyk(55.3%, 58.3%, 0%, 10.6%)
CIE-LAB	lab(47.76, 39.29, -66.96)
CIE-LCH	lch(47.76, 77.64, 300.40°)
OKLab	oklab(56.58% 0.0356 -0.1921)
OKLCH	oklch(56.58% 0.195 280.5)
XYZ	xyz(23.5709, 16.6091, 75.3476)
Luminance	0.1661 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665FE4 #DDE45F

analogous

#5F9AE4 #665FE4 #A85FE4

triadic

#665FE4 #E4665F #5FE466

tetradic

#665FE4 #E45F9A #DDE45F #5FE4A8

square

#665FE4 #E45F9A #DDE45F #5FE4A8

split-complementary

#665FE4 #E4A85F #9AE45F

monochromatic

#241DAC #342BDB #665FE4 #9893ED #CAC8F6

Accessibility & contrast

On white

4.86

#665FE4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.32

#665FE4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665FE4

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665FE4	#FFFFFF	#000000	##FFFFFF
##665FE4	1.00	4.86	4.32	4.86
#FFFFFF	4.86	1.00	21.00	1.00
#000000	4.32	21.00	1.00	21.00
##FFFFFF	4.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0076E8

Deuteranopia (green-blind)

#006CE1

Tritanopia (blue-blind)

#267F98

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #665fe4;
/* rgb */ color: rgb(102, 95, 228);
/* oklch */ color: oklch(56.6% 0.195 280.5);

Tailwind

colors: {
  custom: {
    50: '#9c8ded',
    500: '#665fe4',
    950: '#000000',
  },
}

SCSS

$custom: #665fe4;
$custom-light: #9c8ded;
$custom-dark: #000000;

JSON

{
  "hex": "#665fe4",
  "rgb": {
    "r": 102,
    "g": 95,
    "b": 228
  },
  "hsl": {
    "h": 243.158,
    "s": 71.123,
    "l": 63.333
  },
  "oklch": {
    "l": 0.56575,
    "c": 0.19537,
    "h": 280.5
  },
  "luminance": 0.16611
}

Semantic roles & 50–950 ramp

primary

#665FE4

secondary

#E5E7B8

accent

#D312C9

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0C16

muted

#7F7D84

Preview Lab

Preview with #665FE4

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

Preview Lab → · Contrast checker → · Palette generator →