#665CD3#665CD3

#665CD3 is a mid, vivid blue. Relative luminance 0.152; OKLCH L 54.8% C 0.177 H 282.7°. Best body text is #FFFFFF at 5.20:1 contrast (WCAG AA passes).

Color values

HEX	#665CD3
RGB	rgb(102, 92, 211)
HSL	hsl(245, 57%, 59%)
HSV	hsv(245, 56%, 83%)
CMYK	cmyk(51.7%, 56.4%, 0%, 17.3%)
CIE-LAB	lab(45.88, 35.83, -60.35)
CIE-LCH	lch(45.88, 70.19, 300.70°)
OKLab	oklab(54.81% 0.0388 -0.1726)
OKLCH	oklch(54.81% 0.177 282.7)
XYZ	xyz(21.0609, 15.1811, 63.4359)
Luminance	0.1518 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665CD3 #C9D35C

analogous

#5C8ED3 #665CD3 #A25CD3

triadic

#665CD3 #D3665C #5CD366

tetradic

#665CD3 #D35C8E #C9D35C #5CD3A2

square

#665CD3 #D35C8E #C9D35C #5CD3A2

split-complementary

#665CD3 #D3A25C #8ED35C

monochromatic

#2F268E #3F33BE #665CD3 #938CE0 #C0BCED

Accessibility & contrast

On white

5.20

#665CD3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.04

#665CD3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665CD3

5.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665CD3	#FFFFFF	#000000	##FFFFFF
##665CD3	1.00	5.20	4.04	5.20
#FFFFFF	5.20	1.00	21.00	1.00
#000000	4.04	21.00	1.00	21.00
##FFFFFF	5.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0071D7

Deuteranopia (green-blind)

#0069D0

Tritanopia (blue-blind)

#3A778F

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #665cd3;
/* rgb */ color: rgb(102, 92, 211);
/* oklch */ color: oklch(54.8% 0.177 282.7);

Tailwind

colors: {
  custom: {
    50: '#9a8ae1',
    500: '#665cd3',
    950: '#000000',
  },
}

SCSS

$custom: #665cd3;
$custom-light: #9a8ae1;
$custom-dark: #000000;

JSON

{
  "hex": "#665cd3",
  "rgb": {
    "r": 102,
    "g": 92,
    "b": 211
  },
  "hsl": {
    "h": 245.042,
    "s": 57.488,
    "l": 59.412
  },
  "oklch": {
    "l": 0.54808,
    "c": 0.17695,
    "h": 282.7
  },
  "luminance": 0.15182
}

Semantic roles & 50–950 ramp

primary

#665CD3

secondary

#D9DDAE

accent

#E147D4

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0F0C15

muted

#7E7D83

Preview Lab

Preview with #665CD3

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

Preview Lab → · Contrast checker → · Palette generator →