#665CF3#665CF3

#665CF3 is a mid, highly saturated blue. Relative luminance 0.170; OKLCH L 57.2% C 0.218 H 279.9°. Best body text is #FFFFFF at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#665CF3
RGB	rgb(102, 92, 243)
HSL	hsl(244, 86%, 66%)
HSV	hsv(244, 62%, 95%)
CMYK	cmyk(58%, 62.1%, 0%, 4.7%)
CIE-LAB	lab(48.20, 45.69, -74.70)
CIE-LCH	lch(48.20, 87.56, 301.45°)
OKLab	oklab(57.24% 0.0376 -0.2148)
OKLCH	oklch(57.24% 0.218 279.9)
XYZ	xyz(25.4792, 16.9484, 86.7054)
Luminance	0.1695 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665CF3 #E9F35C

analogous

#5C9DF3 #665CF3 #B25CF3

triadic

#665CF3 #F3665C #5CF366

tetradic

#665CF3 #F35C9D #E9F35C #5CF3B2

square

#665CF3 #F35C9D #E9F35C #5CF3B2

split-complementary

#665CF3 #F3B25C #9DF35C

monochromatic

#1B0FC6 #3023EF #665CF3 #9C95F7 #D1CEFB

Accessibility & contrast

On white

4.78

#665CF3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.39

#665CF3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665CF3

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665CF3	#FFFFFF	#000000	##FFFFFF
##665CF3	1.00	4.78	4.39	4.78
#FFFFFF	4.78	1.00	21.00	1.00
#000000	4.39	21.00	1.00	21.00
##FFFFFF	4.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0078F8

Deuteranopia (green-blind)

#006DF0

Tritanopia (blue-blind)

#00829F

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #665cf3;
/* rgb */ color: rgb(102, 92, 243);
/* oklch */ color: oklch(57.2% 0.218 279.9);

Tailwind

colors: {
  custom: {
    50: '#9e8bf8',
    500: '#665cf3',
    950: '#000000',
  },
}

SCSS

$custom: #665cf3;
$custom-light: #9e8bf8;
$custom-dark: #000000;

JSON

{
  "hex": "#665cf3",
  "rgb": {
    "r": 102,
    "g": 92,
    "b": 243
  },
  "hsl": {
    "h": 243.974,
    "s": 86.286,
    "l": 65.686
  },
  "oklch": {
    "l": 0.57238,
    "c": 0.21811,
    "h": 279.9
  },
  "luminance": 0.1695
}

Semantic roles & 50–950 ramp

primary

#665CF3

secondary

#EBEFBC

accent

#E303D4

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C17

muted

#7F7D85

Preview Lab

Preview with #665CF3

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

Preview Lab → · Contrast checker → · Palette generator →