#665BD1#665BD1

#665BD1 is a mid, vivid blue. Relative luminance 0.149; OKLCH L 54.5% C 0.176 H 283.1°. Best body text is #FFFFFF at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#665BD1
RGB	rgb(102, 91, 209)
HSL	hsl(246, 56%, 59%)
HSV	hsv(246, 56%, 82%)
CMYK	cmyk(51.2%, 56.5%, 0%, 18%)
CIE-LAB	lab(45.51, 35.82, -59.80)
CIE-LCH	lch(45.51, 69.71, 300.92°)
OKLab	oklab(54.49% 0.0398 -0.171)
OKLCH	oklch(54.49% 0.176 283.1)
XYZ	xyz(20.7257, 14.9093, 62.0949)
Luminance	0.1491 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665BD1 #C6D15B

analogous

#5B8BD1 #665BD1 #A15BD1

triadic

#665BD1 #D1665B #5BD166

tetradic

#665BD1 #D15B8B #C6D15B #5BD1A1

square

#665BD1 #D15B8B #C6D15B #5BD1A1

split-complementary

#665BD1 #D1A15B #8BD15B

monochromatic

#30278B #4134BA #665BD1 #938BDE #BFBBEC

Accessibility & contrast

On white

5.27

#665BD1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.98

#665BD1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665BD1

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665BD1	#FFFFFF	#000000	##FFFFFF
##665BD1	1.00	5.27	3.98	5.27
#FFFFFF	5.27	1.00	21.00	1.00
#000000	3.98	21.00	1.00	21.00
##FFFFFF	5.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0070D5

Deuteranopia (green-blind)

#0068CF

Tritanopia (blue-blind)

#3C768D

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #665bd1;
/* rgb */ color: rgb(102, 91, 209);
/* oklch */ color: oklch(54.5% 0.176 283.1);

Tailwind

colors: {
  custom: {
    50: '#998ae0',
    500: '#665bd1',
    950: '#000000',
  },
}

SCSS

$custom: #665bd1;
$custom-light: #998ae0;
$custom-dark: #000000;

JSON

{
  "hex": "#665bd1",
  "rgb": {
    "r": 102,
    "g": 91,
    "b": 209
  },
  "hsl": {
    "h": 245.593,
    "s": 56.19,
    "l": 58.824
  },
  "oklch": {
    "l": 0.54489,
    "c": 0.17562,
    "h": 283.1
  },
  "luminance": 0.1491
}

Semantic roles & 50–950 ramp

primary

#665BD1

secondary

#D7DBAD

accent

#DF48D1

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0F0B15

muted

#7E7C83

Preview Lab

Preview with #665BD1

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

Preview Lab → · Contrast checker → · Palette generator →