#665DB3#665DB3

#665DB3 is a mid, vivid blue. Relative luminance 0.139; OKLCH L 52.8% C 0.132 H 285.7°. Best body text is #FFFFFF at 5.55:1 contrast (WCAG AA passes).

Color values

HEX	#665DB3
RGB	rgb(102, 93, 179)
HSL	hsl(246, 36%, 53%)
HSV	hsv(246, 48%, 70%)
CMYK	cmyk(43%, 48%, 0%, 29.8%)
CIE-LAB	lab(44.10, 25.55, -44.69)
CIE-LCH	lch(44.10, 51.48, 299.76°)
OKLab	oklab(52.83% 0.0357 -0.1266)
OKLCH	oklch(52.83% 0.132 285.7)
XYZ	xyz(17.5282, 13.9075, 44.3999)
Luminance	0.1391 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665DB3 #AAB35D

analogous

#5D7FB3 #665DB3 #915DB3

triadic

#665DB3 #B3665D #5DB366

tetradic

#665DB3 #B35D7F #AAB35D #5DB391

square

#665DB3 #B35D7F #AAB35D #5DB391

split-complementary

#665DB3 #B3915D #7FB35D

monochromatic

#353066 #4B438F #665DB3 #8D87C7 #B5B0DA

Accessibility & contrast

On white

5.55

#665DB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.78

#665DB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665DB3

5.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665DB3	#FFFFFF	#000000	##FFFFFF
##665DB3	1.00	5.55	3.78	5.55
#FFFFFF	5.55	1.00	21.00	1.00
#000000	3.78	21.00	1.00	21.00
##FFFFFF	5.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B6BB6

Deuteranopia (green-blind)

#3966B1

Tritanopia (blue-blind)

#4F6F7F

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #665db3;
/* rgb */ color: rgb(102, 93, 179);
/* oklch */ color: oklch(52.8% 0.132 285.7);

Tailwind

colors: {
  custom: {
    50: '#968bca',
    500: '#665db3',
    950: '#000000',
  },
}

SCSS

$custom: #665db3;
$custom-light: #968bca;
$custom-dark: #000000;

JSON

{
  "hex": "#665db3",
  "rgb": {
    "r": 102,
    "g": 93,
    "b": 179
  },
  "hsl": {
    "h": 246.279,
    "s": 36.134,
    "l": 53.333
  },
  "oklch": {
    "l": 0.52828,
    "c": 0.13156,
    "h": 285.7
  },
  "luminance": 0.13908
}

Semantic roles & 50–950 ramp

primary

#665DB3

secondary

#C5C8A3

accent

#CC5CC0

background

#F9F8FC

surface

#F2F0F8

border

#CCCBD1

text

#0E0C13

muted

#7E7D82

Preview Lab

Preview with #665DB3

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

Preview Lab → · Contrast checker → · Palette generator →