#665DB4#665DB4

#665DB4 is a mid, vivid blue. Relative luminance 0.139; OKLCH L 52.9% C 0.133 H 285.6°. Best body text is #FFFFFF at 5.54:1 contrast (WCAG AA passes).

Color values

HEX	#665DB4
RGB	rgb(102, 93, 180)
HSL	hsl(246, 37%, 54%)
HSV	hsv(246, 48%, 71%)
CMYK	cmyk(43.3%, 48.3%, 0%, 29.4%)
CIE-LAB	lab(44.16, 25.85, -45.18)
CIE-LCH	lch(44.16, 52.05, 299.77°)
OKLab	oklab(52.89% 0.0358 -0.1281)
OKLCH	oklch(52.89% 0.133 285.6)
XYZ	xyz(17.6297, 13.9481, 44.9345)
Luminance	0.1395 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665DB4 #ABB45D

analogous

#5D7FB4 #665DB4 #915DB4

triadic

#665DB4 #B4665D #5DB466

tetradic

#665DB4 #B45D7F #ABB45D #5DB491

square

#665DB4 #B45D7F #ABB45D #5DB491

split-complementary

#665DB4 #B4915D #7FB45D

monochromatic

#353067 #4B4391 #665DB4 #8E87C7 #B5B1DB

Accessibility & contrast

On white

5.54

#665DB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.79

#665DB4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665DB4

5.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665DB4	#FFFFFF	#000000	##FFFFFF
##665DB4	1.00	5.54	3.79	5.54
#FFFFFF	5.54	1.00	21.00	1.00
#000000	3.79	21.00	1.00	21.00
##FFFFFF	5.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A6BB7

Deuteranopia (green-blind)

#3866B2

Tritanopia (blue-blind)

#4E6F80

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #665db4;
/* rgb */ color: rgb(102, 93, 180);
/* oklch */ color: oklch(52.9% 0.133 285.6);

Tailwind

colors: {
  custom: {
    50: '#968bcb',
    500: '#665db4',
    950: '#000000',
  },
}

SCSS

$custom: #665db4;
$custom-light: #968bcb;
$custom-dark: #000000;

JSON

{
  "hex": "#665db4",
  "rgb": {
    "r": 102,
    "g": 93,
    "b": 180
  },
  "hsl": {
    "h": 246.207,
    "s": 36.709,
    "l": 53.529
  },
  "oklch": {
    "l": 0.52891,
    "c": 0.13298,
    "h": 285.6
  },
  "luminance": 0.13949
}

Semantic roles & 50–950 ramp

primary

#665DB4

secondary

#C5C9A4

accent

#CD5BC1

background

#F9F8FC

surface

#F2F0F8

border

#CCCBD1

text

#0E0C13

muted

#7E7D82

Preview Lab

Preview with #665DB4

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

Preview Lab → · Contrast checker → · Palette generator →