#665BD5#665BD5

#665BD5 is a mid, vivid blue. Relative luminance 0.151; OKLCH L 54.8% C 0.181 H 282.7°. Best body text is #FFFFFF at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#665BD5
RGB	rgb(102, 91, 213)
HSL	hsl(245, 59%, 60%)
HSV	hsv(245, 57%, 84%)
CMYK	cmyk(52.1%, 57.3%, 0%, 16.5%)
CIE-LAB	lab(45.78, 37.05, -61.65)
CIE-LCH	lch(45.78, 71.92, 301.00°)
OKLab	oklab(54.78% 0.0398 -0.1765)
OKLCH	oklch(54.78% 0.181 282.7)
XYZ	xyz(21.2272, 15.1099, 64.7359)
Luminance	0.1511 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665BD5 #CAD55B

analogous

#5B8DD5 #665BD5 #A35BD5

triadic

#665BD5 #D5665B #5BD566

tetradic

#665BD5 #D55B8D #CAD55B #5BD5A3

square

#665BD5 #D55B8D #CAD55B #5BD5A3

split-complementary

#665BD5 #D5A35B #8DD55B

monochromatic

#2F2591 #3E32C1 #665BD5 #938CE1 #C1BCEE

Accessibility & contrast

On white

5.22

#665BD5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.02

#665BD5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665BD5

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665BD5	#FFFFFF	#000000	##FFFFFF
##665BD5	1.00	5.22	4.02	5.22
#FFFFFF	5.22	1.00	21.00	1.00
#000000	4.02	21.00	1.00	21.00
##FFFFFF	5.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0070D9

Deuteranopia (green-blind)

#0068D2

Tritanopia (blue-blind)

#38778F

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #665bd5;
/* rgb */ color: rgb(102, 91, 213);
/* oklch */ color: oklch(54.8% 0.181 282.7);

Tailwind

colors: {
  custom: {
    50: '#9a8ae3',
    500: '#665bd5',
    950: '#000000',
  },
}

SCSS

$custom: #665bd5;
$custom-light: #9a8ae3;
$custom-dark: #000000;

JSON

{
  "hex": "#665bd5",
  "rgb": {
    "r": 102,
    "g": 91,
    "b": 213
  },
  "hsl": {
    "h": 245.41,
    "s": 59.223,
    "l": 59.608
  },
  "oklch": {
    "l": 0.5478,
    "c": 0.18092,
    "h": 282.7
  },
  "luminance": 0.15111
}

Semantic roles & 50–950 ramp

primary

#665BD5

secondary

#D9DEAE

accent

#E245D4

background

#FAF8FE

surface

#F3F0FC

border

#CDCBD5

text

#0F0B15

muted

#7F7C84

Preview Lab

Preview with #665BD5

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

Preview Lab → · Contrast checker → · Palette generator →