#665BBC#665BBC

#665BBC is a mid, vivid blue. Relative luminance 0.139; OKLCH L 53.0% C 0.147 H 285.4°. Best body text is #FFFFFF at 5.54:1 contrast (WCAG AA passes).

Color values

HEX	#665BBC
RGB	rgb(102, 91, 188)
HSL	hsl(247, 42%, 55%)
HSV	hsv(247, 52%, 74%)
CMYK	cmyk(45.7%, 51.6%, 0%, 26.3%)
CIE-LAB	lab(44.14, 29.46, -49.88)
CIE-LCH	lch(44.14, 57.93, 300.57°)
OKLab	oklab(53.04% 0.039 -0.1419)
OKLCH	oklch(53.04% 0.147 285.4)
XYZ	xyz(18.2950, 13.9370, 49.2933)
Luminance	0.1394 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665BBC #B1BC5B

analogous

#5B81BC #665BBC #965BBC

triadic

#665BBC #BC665B #5BBC66

tetradic

#665BBC #BC5B81 #B1BC5B #5BBC96

square

#665BBC #BC5B81 #B1BC5B #5BBC96

split-complementary

#665BBC #BC965B #81BC5B

monochromatic

#352D6F #4A3F9B #665BBC #8F86CE #B7B2E0

Accessibility & contrast

On white

5.54

#665BBC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.79

#665BBC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665BBC

5.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665BBC	#FFFFFF	#000000	##FFFFFF
##665BBC	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)

#2E6BBF

Deuteranopia (green-blind)

#2B65BA

Tritanopia (blue-blind)

#4A7083

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #665bbc;
/* rgb */ color: rgb(102, 91, 188);
/* oklch */ color: oklch(53.0% 0.147 285.4);

Tailwind

colors: {
  custom: {
    50: '#9789d1',
    500: '#665bbc',
    950: '#000000',
  },
}

SCSS

$custom: #665bbc;
$custom-light: #9789d1;
$custom-dark: #000000;

JSON

{
  "hex": "#665bbc",
  "rgb": {
    "r": 102,
    "g": 91,
    "b": 188
  },
  "hsl": {
    "h": 246.804,
    "s": 41.991,
    "l": 54.706
  },
  "oklch": {
    "l": 0.53035,
    "c": 0.14713,
    "h": 285.4
  },
  "luminance": 0.13938
}

Semantic roles & 50–950 ramp

primary

#665BBC

secondary

#C9CEA5

accent

#D256C4

background

#F9F8FC

surface

#F2F0F9

border

#CCCBD2

text

#0E0B14

muted

#7E7C82

Preview Lab

Preview with #665BBC

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

Preview Lab → · Contrast checker → · Palette generator →