#665EA4#665EA4

#665EA4 is a mid, moderate blue. Relative luminance 0.135; OKLCH L 52.1% C 0.108 H 287.3°. Best body text is #FFFFFF at 5.67:1 contrast (WCAG AA passes).

Color values

HEX	#665EA4
RGB	rgb(102, 94, 164)
HSL	hsl(247, 28%, 51%)
HSV	hsv(247, 43%, 64%)
CMYK	cmyk(37.8%, 42.7%, 0%, 35.7%)
CIE-LAB	lab(43.52, 20.56, -36.78)
CIE-LCH	lch(43.52, 42.13, 299.20°)
OKLab	oklab(52.12% 0.0321 -0.1035)
OKLCH	oklch(52.12% 0.108 287.3)
XYZ	xyz(16.1812, 13.5100, 36.8699)
Luminance	0.1351 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665EA4 #9CA45E

analogous

#5E79A4 #665EA4 #895EA4

triadic

#665EA4 #A4665E #5EA466

tetradic

#665EA4 #A45E79 #9CA45E #5EA489

square

#665EA4 #A45E79 #9CA45E #5EA489

split-complementary

#665EA4 #A4895E #79A45E

monochromatic

#353157 #4D477E #665EA4 #8B85BA #B0ACD0

Accessibility & contrast

On white

5.67

#665EA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.70

#665EA4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665EA4

5.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665EA4	#FFFFFF	#000000	##FFFFFF
##665EA4	1.00	5.67	3.70	5.67
#FFFFFF	5.67	1.00	21.00	1.00
#000000	3.70	21.00	1.00	21.00
##FFFFFF	5.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4669A7

Deuteranopia (green-blind)

#4665A2

Tritanopia (blue-blind)

#556C79

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #665ea4;
/* rgb */ color: rgb(102, 94, 164);
/* oklch */ color: oklch(52.1% 0.108 287.3);

Tailwind

colors: {
  custom: {
    50: '#948bbf',
    500: '#665ea4',
    950: '#000000',
  },
}

SCSS

$custom: #665ea4;
$custom-light: #948bbf;
$custom-dark: #000000;

JSON

{
  "hex": "#665ea4",
  "rgb": {
    "r": 102,
    "g": 94,
    "b": 164
  },
  "hsl": {
    "h": 246.857,
    "s": 27.778,
    "l": 50.588
  },
  "oklch": {
    "l": 0.5212,
    "c": 0.10837,
    "h": 287.3
  },
  "luminance": 0.13511
}

Semantic roles & 50–950 ramp

primary

#665EA4

secondary

#BBBE9F

accent

#C464B9

background

#F9F8FB

surface

#F2F0F7

border

#CCCBD0

text

#0D0C12

muted

#7E7D81

Preview Lab

Preview with #665EA4

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

Preview Lab → · Contrast checker → · Palette generator →