#665BDD#665BDD

#665BDD is a mid, vivid blue. Relative luminance 0.155; OKLCH L 55.4% C 0.191 H 282.0°. Best body text is #FFFFFF at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#665BDD
RGB	rgb(102, 91, 221)
HSL	hsl(245, 66%, 61%)
HSV	hsv(245, 59%, 87%)
CMYK	cmyk(53.8%, 58.8%, 0%, 13.3%)
CIE-LAB	lab(46.35, 39.50, -65.30)
CIE-LCH	lch(46.35, 76.32, 301.17°)
OKLab	oklab(55.37% 0.0397 -0.1872)
OKLCH	oklch(55.37% 0.191 282)
XYZ	xyz(22.2677, 15.5261, 70.2161)
Luminance	0.1553 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665BDD #D2DD5B

analogous

#5B91DD #665BDD #A75BDD

triadic

#665BDD #DD665B #5BDD66

tetradic

#665BDD #DD5B91 #D2DD5B #5BDDA7

square

#665BDD #DD5B91 #D2DD5B #5BDDA7

split-complementary

#665BDD #DDA75B #91DD5B

monochromatic

#2B219D #392BD0 #665BDD #958EE8 #C5C0F2

Accessibility & contrast

On white

5.12

#665BDD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.11

#665BDD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665BDD

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665BDD	#FFFFFF	#000000	##FFFFFF
##665BDD	1.00	5.12	4.11	5.12
#FFFFFF	5.12	1.00	21.00	1.00
#000000	4.11	21.00	1.00	21.00
##FFFFFF	5.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0072E1

Deuteranopia (green-blind)

#0069DA

Tritanopia (blue-blind)

#307A93

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #665bdd;
/* rgb */ color: rgb(102, 91, 221);
/* oklch */ color: oklch(55.4% 0.191 282.0);

Tailwind

colors: {
  custom: {
    50: '#9b8ae8',
    500: '#665bdd',
    950: '#000000',
  },
}

SCSS

$custom: #665bdd;
$custom-light: #9b8ae8;
$custom-dark: #000000;

JSON

{
  "hex": "#665bdd",
  "rgb": {
    "r": 102,
    "g": 91,
    "b": 221
  },
  "hsl": {
    "h": 245.077,
    "s": 65.657,
    "l": 61.176
  },
  "oklch": {
    "l": 0.55372,
    "c": 0.19137,
    "h": 282
  },
  "luminance": 0.15527
}

Semantic roles & 50–950 ramp

primary

#665BDD

secondary

#DEE2B1

accent

#CE18BE

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0B16

muted

#7F7C84

Preview Lab

Preview with #665BDD

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

Preview Lab → · Contrast checker → · Palette generator →