#665BBD#665BBD

#665BBD is a mid, vivid blue. Relative luminance 0.140; OKLCH L 53.1% C 0.149 H 285.3°. Best body text is #FFFFFF at 5.53:1 contrast (WCAG AA passes).

Color values

HEX	#665BBD
RGB	rgb(102, 91, 189)
HSL	hsl(247, 43%, 55%)
HSV	hsv(247, 52%, 74%)
CMYK	cmyk(46%, 51.9%, 0%, 25.9%)
CIE-LAB	lab(44.20, 29.76, -50.36)
CIE-LCH	lch(44.20, 58.49, 300.58°)
OKLab	oklab(53.1% 0.0391 -0.1433)
OKLCH	oklch(53.1% 0.149 285.3)
XYZ	xyz(18.4032, 13.9803, 49.8630)
Luminance	0.1398 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665BBD #B2BD5B

analogous

#5B81BD #665BBD #975BBD

triadic

#665BBD #BD665B #5BBD66

tetradic

#665BBD #BD5B81 #B2BD5B #5BBD97

square

#665BBD #BD5B81 #B2BD5B #5BBD97

split-complementary

#665BBD #BD975B #81BD5B

monochromatic

#352D70 #493F9C #665BBD #8F87CF #B7B2E0

Accessibility & contrast

On white

5.53

#665BBD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.80

#665BBD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665BBD

5.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665BBD	#FFFFFF	#000000	##FFFFFF
##665BBD	1.00	5.53	3.80	5.53
#FFFFFF	5.53	1.00	21.00	1.00
#000000	3.80	21.00	1.00	21.00
##FFFFFF	5.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D6BC0

Deuteranopia (green-blind)

#2A66BB

Tritanopia (blue-blind)

#4A7083

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #665bbd;
/* rgb */ color: rgb(102, 91, 189);
/* oklch */ color: oklch(53.1% 0.149 285.3);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#665bbd",
  "rgb": {
    "r": 102,
    "g": 91,
    "b": 189
  },
  "hsl": {
    "h": 246.735,
    "s": 42.609,
    "l": 54.902
  },
  "oklch": {
    "l": 0.53101,
    "c": 0.14852,
    "h": 285.3
  },
  "luminance": 0.13981
}

Semantic roles & 50–950 ramp

primary

#665BBD

secondary

#CACFA5

accent

#D255C4

background

#F9F8FC

surface

#F2F0F9

border

#CCCBD2

text

#0E0B14

muted

#7E7C82

Preview Lab

Preview with #665BBD

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

Preview Lab → · Contrast checker → · Palette generator →