#665BC7#665BC7

#665BC7 is a mid, vivid blue. Relative luminance 0.144; OKLCH L 53.8% C 0.162 H 284.1°. Best body text is #FFFFFF at 5.40:1 contrast (WCAG AA passes).

Color values

HEX	#665BC7
RGB	rgb(102, 91, 199)
HSL	hsl(246, 49%, 57%)
HSV	hsv(246, 54%, 78%)
CMYK	cmyk(48.7%, 54.3%, 0%, 22%)
CIE-LAB	lab(44.84, 32.78, -55.13)
CIE-LCH	lch(44.84, 64.13, 300.73°)
OKLab	oklab(53.78% 0.0396 -0.1573)
OKLCH	oklch(53.78% 0.162 284.1)
XYZ	xyz(19.5263, 14.4295, 55.7781)
Luminance	0.1443 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665BC7 #BCC75B

analogous

#5B86C7 #665BC7 #9C5BC7

triadic

#665BC7 #C7665B #5BC766

tetradic

#665BC7 #C75B86 #BCC75B #5BC79C

square

#665BC7 #C75B86 #BCC75B #5BC79C

split-complementary

#665BC7 #C79C5B #86C75B

monochromatic

#332B7D #463AAB #665BC7 #9189D7 #BBB6E6

Accessibility & contrast

On white

5.40

#665BC7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.89

#665BC7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665BC7

5.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665BC7	#FFFFFF	#000000	##FFFFFF
##665BC7	1.00	5.40	3.89	5.40
#FFFFFF	5.40	1.00	21.00	1.00
#000000	3.89	21.00	1.00	21.00
##FFFFFF	5.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F6DCB

Deuteranopia (green-blind)

#1767C5

Tritanopia (blue-blind)

#437388

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #665bc7;
/* rgb */ color: rgb(102, 91, 199);
/* oklch */ color: oklch(53.8% 0.162 284.1);

Tailwind

colors: {
  custom: {
    50: '#9889d9',
    500: '#665bc7',
    950: '#000000',
  },
}

SCSS

$custom: #665bc7;
$custom-light: #9889d9;
$custom-dark: #000000;

JSON

{
  "hex": "#665bc7",
  "rgb": {
    "r": 102,
    "g": 91,
    "b": 199
  },
  "hsl": {
    "h": 246.111,
    "s": 49.091,
    "l": 56.863
  },
  "oklch": {
    "l": 0.53782,
    "c": 0.16221,
    "h": 284.1
  },
  "luminance": 0.1443
}

Semantic roles & 50–950 ramp

primary

#665BC7

secondary

#D0D5A9

accent

#D94FCB

background

#F9F8FD

surface

#F2F0FA

border

#CCCBD3

text

#0E0B15

muted

#7E7C83

Preview Lab

Preview with #665BC7

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

Preview Lab → · Contrast checker → · Palette generator →