#665CB7#665CB7

#665CB7 is a mid, vivid blue. Relative luminance 0.139; OKLCH L 52.9% C 0.139 H 285.6°. Best body text is #FFFFFF at 5.56:1 contrast (WCAG AA passes).

Color values

HEX	#665CB7
RGB	rgb(102, 92, 183)
HSL	hsl(247, 39%, 54%)
HSV	hsv(247, 50%, 72%)
CMYK	cmyk(44.3%, 49.7%, 0%, 28.2%)
CIE-LAB	lab(44.09, 27.35, -47.05)
CIE-LCH	lch(44.09, 54.42, 300.17°)
OKLab	oklab(52.89% 0.0374 -0.1336)
OKLCH	oklch(52.89% 0.139 285.6)
XYZ	xyz(17.8514, 13.8972, 46.5324)
Luminance	0.1390 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665CB7 #ADB75C

analogous

#5C80B7 #665CB7 #945CB7

triadic

#665CB7 #B7665C #5CB766

tetradic

#665CB7 #B75C80 #ADB75C #5CB794

square

#665CB7 #B75C80 #ADB75C #5CB794

split-complementary

#665CB7 #B7945C #80B75C

monochromatic

#352F6A #4B4294 #665CB7 #8E86CA #B6B1DD

Accessibility & contrast

On white

5.56

#665CB7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.78

#665CB7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665CB7

5.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665CB7	#FFFFFF	#000000	##FFFFFF
##665CB7	1.00	5.56	3.78	5.56
#FFFFFF	5.56	1.00	21.00	1.00
#000000	3.78	21.00	1.00	21.00
##FFFFFF	5.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#356BBA

Deuteranopia (green-blind)

#3366B5

Tritanopia (blue-blind)

#4D6F81

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #665cb7;
/* rgb */ color: rgb(102, 92, 183);
/* oklch */ color: oklch(52.9% 0.139 285.6);

Tailwind

colors: {
  custom: {
    50: '#968acd',
    500: '#665cb7',
    950: '#000000',
  },
}

SCSS

$custom: #665cb7;
$custom-light: #968acd;
$custom-dark: #000000;

JSON

{
  "hex": "#665cb7",
  "rgb": {
    "r": 102,
    "g": 92,
    "b": 183
  },
  "hsl": {
    "h": 246.593,
    "s": 38.723,
    "l": 53.922
  },
  "oklch": {
    "l": 0.52894,
    "c": 0.1387,
    "h": 285.6
  },
  "luminance": 0.13898
}

Semantic roles & 50–950 ramp

primary

#665CB7

secondary

#C7CBA4

accent

#CF59C2

background

#F9F8FC

surface

#F2F0F9

border

#CCCBD2

text

#0E0B13

muted

#7E7C82

Preview Lab

Preview with #665CB7

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

Preview Lab → · Contrast checker → · Palette generator →