#665EA1#665EA1

#665EA1 is a mid, moderate blue. Relative luminance 0.134; OKLCH L 51.9% C 0.104 H 287.7°. Best body text is #FFFFFF at 5.71:1 contrast (WCAG AA passes).

Color values

HEX	#665EA1
RGB	rgb(102, 94, 161)
HSL	hsl(247, 26%, 50%)
HSV	hsv(247, 42%, 63%)
CMYK	cmyk(36.6%, 41.6%, 0%, 36.9%)
CIE-LAB	lab(43.36, 19.70, -35.25)
CIE-LCH	lch(43.36, 40.38, 299.20°)
OKLab	oklab(51.95% 0.0316 -0.099)
OKLCH	oklch(51.95% 0.104 287.7)
XYZ	xyz(15.9135, 13.4029, 35.4599)
Luminance	0.1340 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665EA1 #99A15E

analogous

#5E78A1 #665EA1 #875EA1

triadic

#665EA1 #A1665E #5EA166

tetradic

#665EA1 #A15E78 #99A15E #5EA187

square

#665EA1 #A15E78 #99A15E #5EA187

split-complementary

#665EA1 #A1875E #78A15E

monochromatic

#353154 #4E477A #665EA1 #8B85B8 #AFABCE

Accessibility & contrast

On white

5.71

#665EA1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.68

#665EA1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665EA1

5.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665EA1	#FFFFFF	#000000	##FFFFFF
##665EA1	1.00	5.71	3.68	5.71
#FFFFFF	5.71	1.00	21.00	1.00
#000000	3.68	21.00	1.00	21.00
##FFFFFF	5.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4868A4

Deuteranopia (green-blind)

#47659F

Tritanopia (blue-blind)

#576B78

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #665ea1;
/* rgb */ color: rgb(102, 94, 161);
/* oklch */ color: oklch(51.9% 0.104 287.7);

Tailwind

colors: {
  custom: {
    50: '#948bbd',
    500: '#665ea1',
    950: '#000000',
  },
}

SCSS

$custom: #665ea1;
$custom-light: #948bbd;
$custom-dark: #000000;

JSON

{
  "hex": "#665ea1",
  "rgb": {
    "r": 102,
    "g": 94,
    "b": 161
  },
  "hsl": {
    "h": 247.164,
    "s": 26.275,
    "l": 50
  },
  "oklch": {
    "l": 0.51948,
    "c": 0.10395,
    "h": 287.7
  },
  "luminance": 0.13403
}

Semantic roles & 50–950 ramp

primary

#665EA1

secondary

#B9BC9E

accent

#C365B7

background

#F9F8FB

surface

#F2F0F6

border

#CCCBD0

text

#0D0C12

muted

#7E7D81

Preview Lab

Preview with #665EA1

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

Preview Lab → · Contrast checker → · Palette generator →