#665BA4#665BA4

#665BA4 is a mid, moderate blue. Relative luminance 0.130; OKLCH L 51.5% C 0.113 H 288.7°. Best body text is #FFFFFF at 5.84:1 contrast (WCAG AA passes).

Color values

HEX	#665BA4
RGB	rgb(102, 91, 164)
HSL	hsl(249, 29%, 50%)
HSV	hsv(249, 45%, 64%)
CMYK	cmyk(37.8%, 44.5%, 0%, 35.7%)
CIE-LAB	lab(42.74, 22.41, -38.01)
CIE-LCH	lch(42.74, 44.12, 300.52°)
OKLab	oklab(51.53% 0.0363 -0.1071)
OKLCH	oklch(51.53% 0.113 288.7)
XYZ	xyz(15.9196, 12.9868, 36.7827)
Luminance	0.1299 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665BA4 #99A45B

analogous

#5B75A4 #665BA4 #8A5BA4

triadic

#665BA4 #A4665B #5BA466

tetradic

#665BA4 #A45B75 #99A45B #5BA48A

square

#665BA4 #A45B75 #99A45B #5BA48A

split-complementary

#665BA4 #A48A5B #75A45B

monochromatic

#352F55 #4E457D #665BA4 #8B82BA #AFAAD0

Accessibility & contrast

On white

5.84

#665BA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.60

#665BA4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665BA4

5.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665BA4	#FFFFFF	#000000	##FFFFFF
##665BA4	1.00	5.84	3.60	5.84
#FFFFFF	5.84	1.00	21.00	1.00
#000000	3.60	21.00	1.00	21.00
##FFFFFF	5.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4267A7

Deuteranopia (green-blind)

#4263A2

Tritanopia (blue-blind)

#566977

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #665ba4;
/* rgb */ color: rgb(102, 91, 164);
/* oklch */ color: oklch(51.5% 0.113 288.7);

Tailwind

colors: {
  custom: {
    50: '#9489bf',
    500: '#665ba4',
    950: '#000000',
  },
}

SCSS

$custom: #665ba4;
$custom-light: #9489bf;
$custom-dark: #000000;

JSON

{
  "hex": "#665ba4",
  "rgb": {
    "r": 102,
    "g": 91,
    "b": 164
  },
  "hsl": {
    "h": 249.041,
    "s": 28.627,
    "l": 50
  },
  "oklch": {
    "l": 0.51529,
    "c": 0.11306,
    "h": 288.7
  },
  "luminance": 0.12987
}

Semantic roles & 50–950 ramp

primary

#665BA4

secondary

#B9BE9D

accent

#C563B6

background

#F9F8FB

surface

#F2F0F7

border

#CCCBD0

text

#0D0B12

muted

#7E7C81

Preview Lab

Preview with #665BA4

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

Preview Lab → · Contrast checker → · Palette generator →