#665BBF#665BBF

#665BBF is a mid, vivid blue. Relative luminance 0.141; OKLCH L 53.2% C 0.151 H 285.0°. Best body text is #FFFFFF at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#665BBF
RGB	rgb(102, 91, 191)
HSL	hsl(247, 44%, 55%)
HSV	hsv(247, 52%, 75%)
CMYK	cmyk(46.6%, 52.4%, 0%, 25.1%)
CIE-LAB	lab(44.33, 30.36, -51.32)
CIE-LCH	lch(44.33, 59.63, 300.61°)
OKLab	oklab(53.24% 0.0392 -0.1461)
OKLCH	oklch(53.24% 0.151 285)
XYZ	xyz(18.6218, 14.0677, 51.0143)
Luminance	0.1407 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665BBF #B4BF5B

analogous

#5B82BF #665BBF #985BBF

triadic

#665BBF #BF665B #5BBF66

tetradic

#665BBF #BF5B82 #B4BF5B #5BBF98

square

#665BBF #BF5B82 #B4BF5B #5BBF98

split-complementary

#665BBF #BF985B #82BF5B

monochromatic

#342D73 #493E9F #665BBF #8F87D0 #B8B3E1

Accessibility & contrast

On white

5.51

#665BBF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.81

#665BBF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665BBF

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665BBF	#FFFFFF	#000000	##FFFFFF
##665BBF	1.00	5.51	3.81	5.51
#FFFFFF	5.51	1.00	21.00	1.00
#000000	3.81	21.00	1.00	21.00
##FFFFFF	5.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A6CC2

Deuteranopia (green-blind)

#2766BD

Tritanopia (blue-blind)

#487184

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #665bbf;
/* rgb */ color: rgb(102, 91, 191);
/* oklch */ color: oklch(53.2% 0.151 285.0);

Tailwind

colors: {
  custom: {
    50: '#9789d3',
    500: '#665bbf',
    950: '#000000',
  },
}

SCSS

$custom: #665bbf;
$custom-light: #9789d3;
$custom-dark: #000000;

JSON

{
  "hex": "#665bbf",
  "rgb": {
    "r": 102,
    "g": 91,
    "b": 191
  },
  "hsl": {
    "h": 246.6,
    "s": 43.86,
    "l": 55.294
  },
  "oklch": {
    "l": 0.53235,
    "c": 0.15128,
    "h": 285
  },
  "luminance": 0.14069
}

Semantic roles & 50–950 ramp

primary

#665BBF

secondary

#CBD0A6

accent

#D454C6

background

#F9F8FD

surface

#F2F0FA

border

#CCCBD3

text

#0E0B14

muted

#7E7C83

Preview Lab

Preview with #665BBF

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

Preview Lab → · Contrast checker → · Palette generator →