#665BB7#665BB7

#665BB7 is a mid, vivid blue. Relative luminance 0.137; OKLCH L 52.7% C 0.140 H 286.0°. Best body text is #FFFFFF at 5.61:1 contrast (WCAG AA passes).

Color values

HEX	#665BB7
RGB	rgb(102, 91, 183)
HSL	hsl(247, 39%, 54%)
HSV	hsv(247, 50%, 72%)
CMYK	cmyk(44.3%, 50.3%, 0%, 28.2%)
CIE-LAB	lab(43.84, 27.96, -47.45)
CIE-LCH	lch(43.84, 55.08, 300.51°)
OKLab	oklab(52.71% 0.0386 -0.1347)
OKLCH	oklch(52.71% 0.14 286)
XYZ	xyz(17.7654, 13.7251, 46.5037)
Luminance	0.1373 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665BB7 #ACB75B

analogous

#5B7EB7 #665BB7 #945BB7

triadic

#665BB7 #B7665B #5BB766

tetradic

#665BB7 #B75B7E #ACB75B #5BB794

square

#665BB7 #B75B7E #ACB75B #5BB794

split-complementary

#665BB7 #B7945B #7EB75B

monochromatic

#352E69 #4B4194 #665BB7 #8E86CA #B5B0DC

Accessibility & contrast

On white

5.61

#665BB7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.75

#665BB7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665BB7

5.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665BB7	#FFFFFF	#000000	##FFFFFF
##665BB7	1.00	5.61	3.75	5.61
#FFFFFF	5.61	1.00	21.00	1.00
#000000	3.75	21.00	1.00	21.00
##FFFFFF	5.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#336ABA

Deuteranopia (green-blind)

#3165B5

Tritanopia (blue-blind)

#4D6E80

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #665bb7;
/* rgb */ color: rgb(102, 91, 183);
/* oklch */ color: oklch(52.7% 0.140 286.0);

Tailwind

colors: {
  custom: {
    50: '#9689cd',
    500: '#665bb7',
    950: '#000000',
  },
}

SCSS

$custom: #665bb7;
$custom-light: #9689cd;
$custom-dark: #000000;

JSON

{
  "hex": "#665bb7",
  "rgb": {
    "r": 102,
    "g": 91,
    "b": 183
  },
  "hsl": {
    "h": 247.174,
    "s": 38.983,
    "l": 53.725
  },
  "oklch": {
    "l": 0.52707,
    "c": 0.14017,
    "h": 286
  },
  "luminance": 0.13726
}

Semantic roles & 50–950 ramp

primary

#665BB7

secondary

#C6CBA3

accent

#CF59C1

background

#F9F8FC

surface

#F2F0F9

border

#CCCBD2

text

#0E0B13

muted

#7E7C82

Preview Lab

Preview with #665BB7

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

Preview Lab → · Contrast checker → · Palette generator →