#665BDE#665BDE

#665BDE is a mid, vivid blue. Relative luminance 0.156; OKLCH L 55.4% C 0.193 H 281.9°. Best body text is #FFFFFF at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#665BDE
RGB	rgb(102, 91, 222)
HSL	hsl(245, 66%, 61%)
HSV	hsv(245, 59%, 87%)
CMYK	cmyk(54.1%, 59%, 0%, 12.9%)
CIE-LAB	lab(46.42, 39.81, -65.75)
CIE-LCH	lch(46.42, 76.86, 301.19°)
OKLab	oklab(55.45% 0.0397 -0.1885)
OKLCH	oklch(55.45% 0.193 281.9)
XYZ	xyz(22.4013, 15.5795, 70.9198)
Luminance	0.1558 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665BDE #D3DE5B

analogous

#5B92DE #665BDE #A85BDE

triadic

#665BDE #DE665B #5BDE66

tetradic

#665BDE #DE5B92 #D3DE5B #5BDEA8

square

#665BDE #DE5B92 #D3DE5B #5BDEA8

split-complementary

#665BDE #DEA85B #92DE5B

monochromatic

#2B209F #382AD2 #665BDE #968EE8 #C5C1F3

Accessibility & contrast

On white

5.10

#665BDE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.12

#665BDE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665BDE

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665BDE	#FFFFFF	#000000	##FFFFFF
##665BDE	1.00	5.10	4.12	5.10
#FFFFFF	5.10	1.00	21.00	1.00
#000000	4.12	21.00	1.00	21.00
##FFFFFF	5.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0073E2

Deuteranopia (green-blind)

#0069DB

Tritanopia (blue-blind)

#2F7A94

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #665bde;
/* rgb */ color: rgb(102, 91, 222);
/* oklch */ color: oklch(55.4% 0.193 281.9);

Tailwind

colors: {
  custom: {
    50: '#9b8ae9',
    500: '#665bde',
    950: '#000000',
  },
}

SCSS

$custom: #665bde;
$custom-light: #9b8ae9;
$custom-dark: #000000;

JSON

{
  "hex": "#665bde",
  "rgb": {
    "r": 102,
    "g": 91,
    "b": 222
  },
  "hsl": {
    "h": 245.038,
    "s": 66.497,
    "l": 61.373
  },
  "oklch": {
    "l": 0.55448,
    "c": 0.19266,
    "h": 281.9
  },
  "luminance": 0.15581
}

Semantic roles & 50–950 ramp

primary

#665BDE

secondary

#DFE3B2

accent

#CE17BF

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0C16

muted

#7F7D84

Preview Lab

Preview with #665BDE

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

Preview Lab → · Contrast checker → · Palette generator →