#665EA6#665EA6

#665EA6 is a mid, moderate blue. Relative luminance 0.136; OKLCH L 52.2% C 0.111 H 287.0°. Best body text is #FFFFFF at 5.65:1 contrast (WCAG AA passes).

Color values

HEX	#665EA6
RGB	rgb(102, 94, 166)
HSL	hsl(247, 29%, 51%)
HSV	hsv(247, 43%, 65%)
CMYK	cmyk(38.6%, 43.4%, 0%, 34.9%)
CIE-LAB	lab(43.63, 21.13, -37.79)
CIE-LCH	lch(43.63, 43.30, 299.21°)
OKLab	oklab(52.24% 0.0325 -0.1064)
OKLCH	oklch(52.24% 0.111 287)
XYZ	xyz(16.3632, 13.5828, 37.8286)
Luminance	0.1358 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665EA6 #9EA65E

analogous

#5E7AA6 #665EA6 #8A5EA6

triadic

#665EA6 #A6665E #5EA666

tetradic

#665EA6 #A65E7A #9EA65E #5EA68A

square

#665EA6 #A65E7A #9EA65E #5EA68A

split-complementary

#665EA6 #A68A5E #7AA65E

monochromatic

#353159 #4D4780 #665EA6 #8B85BC #B1ADD2

Accessibility & contrast

On white

5.65

#665EA6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.72

#665EA6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665EA6

5.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665EA6	#FFFFFF	#000000	##FFFFFF
##665EA6	1.00	5.65	3.72	5.65
#FFFFFF	5.65	1.00	21.00	1.00
#000000	3.72	21.00	1.00	21.00
##FFFFFF	5.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4569A9

Deuteranopia (green-blind)

#4465A4

Tritanopia (blue-blind)

#556C7A

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #665ea6;
/* rgb */ color: rgb(102, 94, 166);
/* oklch */ color: oklch(52.2% 0.111 287.0);

Tailwind

colors: {
  custom: {
    50: '#948bc1',
    500: '#665ea6',
    950: '#000000',
  },
}

SCSS

$custom: #665ea6;
$custom-light: #948bc1;
$custom-dark: #000000;

JSON

{
  "hex": "#665ea6",
  "rgb": {
    "r": 102,
    "g": 94,
    "b": 166
  },
  "hsl": {
    "h": 246.667,
    "s": 28.8,
    "l": 50.98
  },
  "oklch": {
    "l": 0.52235,
    "c": 0.1113,
    "h": 287
  },
  "luminance": 0.13583
}

Semantic roles & 50–950 ramp

primary

#665EA6

secondary

#BCC0A0

accent

#C563BA

background

#F9F8FB

surface

#F2F0F7

border

#CCCBD0

text

#0D0C12

muted

#7E7D81

Preview Lab

Preview with #665EA6

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

Preview Lab → · Contrast checker → · Palette generator →