#665AA6#665AA6

#665AA6 is a mid, moderate blue. Relative luminance 0.129; OKLCH L 51.5% C 0.118 H 288.8°. Best body text is #FFFFFF at 5.87:1 contrast (WCAG AA passes).

Color values

HEX	#665AA6
RGB	rgb(102, 90, 166)
HSL	hsl(249, 30%, 50%)
HSV	hsv(249, 46%, 65%)
CMYK	cmyk(38.6%, 45.8%, 0%, 34.9%)
CIE-LAB	lab(42.60, 23.60, -39.43)
CIE-LCH	lch(42.60, 45.95, 300.90°)
OKLab	oklab(51.45% 0.0379 -0.1112)
OKLCH	oklch(51.45% 0.118 288.8)
XYZ	xyz(16.0167, 12.8898, 37.7131)
Luminance	0.1289 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665AA6 #9AA65A

analogous

#5A74A6 #665AA6 #8C5AA6

triadic

#665AA6 #A6665A #5AA666

tetradic

#665AA6 #A65A74 #9AA65A #5AA68C

square

#665AA6 #A65A74 #9AA65A #5AA68C

split-complementary

#665AA6 #A68C5A #74A65A

monochromatic

#352F57 #4D447F #665AA6 #8B82BB #B0AAD1

Accessibility & contrast

On white

5.87

#665AA6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.58

#665AA6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665AA6

5.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665AA6	#FFFFFF	#000000	##FFFFFF
##665AA6	1.00	5.87	3.58	5.87
#FFFFFF	5.87	1.00	21.00	1.00
#000000	3.58	21.00	1.00	21.00
##FFFFFF	5.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F66A9

Deuteranopia (green-blind)

#3F63A4

Tritanopia (blue-blind)

#556978

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #665aa6;
/* rgb */ color: rgb(102, 90, 166);
/* oklch */ color: oklch(51.5% 0.118 288.8);

Tailwind

colors: {
  custom: {
    50: '#9588c1',
    500: '#665aa6',
    950: '#000000',
  },
}

SCSS

$custom: #665aa6;
$custom-light: #9588c1;
$custom-dark: #000000;

JSON

{
  "hex": "#665aa6",
  "rgb": {
    "r": 102,
    "g": 90,
    "b": 166
  },
  "hsl": {
    "h": 249.474,
    "s": 29.921,
    "l": 50.196
  },
  "oklch": {
    "l": 0.51454,
    "c": 0.11752,
    "h": 288.8
  },
  "luminance": 0.1289
}

Semantic roles & 50–950 ramp

primary

#665AA6

secondary

#BABF9D

accent

#C662B6

background

#F9F8FB

surface

#F2F0F7

border

#CCCBD0

text

#0D0B12

muted

#7E7C81

Preview Lab

Preview with #665AA6

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

Preview Lab → · Contrast checker → · Palette generator →