#665AA8#665AA8

#665AA8 is a mid, vivid blue. Relative luminance 0.130; OKLCH L 51.6% C 0.120 H 288.5°. Best body text is #FFFFFF at 5.85:1 contrast (WCAG AA passes).

Color values

HEX	#665AA8
RGB	rgb(102, 90, 168)
HSL	hsl(249, 31%, 51%)
HSV	hsv(249, 46%, 66%)
CMYK	cmyk(39.3%, 46.4%, 0%, 34.1%)
CIE-LAB	lab(42.71, 24.18, -40.43)
CIE-LCH	lch(42.71, 47.11, 300.88°)
OKLab	oklab(51.58% 0.0382 -0.1142)
OKLCH	oklch(51.58% 0.12 288.5)
XYZ	xyz(16.2016, 12.9638, 38.6868)
Luminance	0.1296 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665AA8 #9CA85A

analogous

#5A75A8 #665AA8 #8D5AA8

triadic

#665AA8 #A8665A #5AA866

tetradic

#665AA8 #A85A75 #9CA85A #5AA88D

square

#665AA8 #A85A75 #9CA85A #5AA88D

split-complementary

#665AA8 #A88D5A #75A85A

monochromatic

#352F59 #4D4481 #665AA8 #8B82BD #B0AAD2

Accessibility & contrast

On white

5.85

#665AA8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#665AA8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665AA8

5.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665AA8	#FFFFFF	#000000	##FFFFFF
##665AA8	1.00	5.85	3.59	5.85
#FFFFFF	5.85	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E67AB

Deuteranopia (green-blind)

#3E63A6

Tritanopia (blue-blind)

#546979

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #665aa8;
/* rgb */ color: rgb(102, 90, 168);
/* oklch */ color: oklch(51.6% 0.120 288.5);

Tailwind

colors: {
  custom: {
    50: '#9588c2',
    500: '#665aa8',
    950: '#000000',
  },
}

SCSS

$custom: #665aa8;
$custom-light: #9588c2;
$custom-dark: #000000;

JSON

{
  "hex": "#665aa8",
  "rgb": {
    "r": 102,
    "g": 90,
    "b": 168
  },
  "hsl": {
    "h": 249.231,
    "s": 30.952,
    "l": 50.588
  },
  "oklch": {
    "l": 0.51575,
    "c": 0.1204,
    "h": 288.5
  },
  "luminance": 0.12964
}

Semantic roles & 50–950 ramp

primary

#665AA8

secondary

#BBC09E

accent

#C761B7

background

#F9F8FC

surface

#F2F0F8

border

#CCCBD1

text

#0D0B12

muted

#7E7C81

Preview Lab

Preview with #665AA8

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

Preview Lab → · Contrast checker → · Palette generator →