#665EA5#665EA5

#665EA5 is a mid, moderate blue. Relative luminance 0.135; OKLCH L 52.2% C 0.110 H 287.1°. Best body text is #FFFFFF at 5.66:1 contrast (WCAG AA passes).

Color values

HEX	#665EA5
RGB	rgb(102, 94, 165)
HSL	hsl(247, 28%, 51%)
HSV	hsv(247, 43%, 65%)
CMYK	cmyk(38.2%, 43%, 0%, 35.3%)
CIE-LAB	lab(43.58, 20.84, -37.28)
CIE-LCH	lch(43.58, 42.72, 299.21°)
OKLab	oklab(52.18% 0.0323 -0.105)
OKLCH	oklch(52.18% 0.11 287.1)
XYZ	xyz(16.2719, 13.5463, 37.3474)
Luminance	0.1355 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665EA5 #9DA55E

analogous

#5E79A5 #665EA5 #895EA5

triadic

#665EA5 #A5665E #5EA566

tetradic

#665EA5 #A55E79 #9DA55E #5EA589

square

#665EA5 #A55E79 #9DA55E #5EA589

split-complementary

#665EA5 #A5895E #79A55E

monochromatic

#353158 #4D477F #665EA5 #8B85BB #B1ADD1

Accessibility & contrast

On white

5.66

#665EA5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.71

#665EA5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665EA5

5.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665EA5	#FFFFFF	#000000	##FFFFFF
##665EA5	1.00	5.66	3.71	5.66
#FFFFFF	5.66	1.00	21.00	1.00
#000000	3.71	21.00	1.00	21.00
##FFFFFF	5.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4669A8

Deuteranopia (green-blind)

#4565A3

Tritanopia (blue-blind)

#556C79

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #665ea5;
/* rgb */ color: rgb(102, 94, 165);
/* oklch */ color: oklch(52.2% 0.110 287.1);

Tailwind

colors: {
  custom: {
    50: '#948bc0',
    500: '#665ea5',
    950: '#000000',
  },
}

SCSS

$custom: #665ea5;
$custom-light: #948bc0;
$custom-dark: #000000;

JSON

{
  "hex": "#665ea5",
  "rgb": {
    "r": 102,
    "g": 94,
    "b": 165
  },
  "hsl": {
    "h": 246.761,
    "s": 28.287,
    "l": 50.784
  },
  "oklch": {
    "l": 0.52177,
    "c": 0.10983,
    "h": 287.1
  },
  "luminance": 0.13547
}

Semantic roles & 50–950 ramp

primary

#665EA5

secondary

#BCBFA0

accent

#C563BA

background

#F9F8FB

surface

#F2F0F7

border

#CCCBD0

text

#0D0C12

muted

#7E7D81

Preview Lab

Preview with #665EA5

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

Preview Lab → · Contrast checker → · Palette generator →