#665BDF#665BDF

#665BDF is a mid, vivid blue. Relative luminance 0.156; OKLCH L 55.5% C 0.194 H 281.8°. Best body text is #FFFFFF at 5.09:1 contrast (WCAG AA passes).

Color values

HEX	#665BDF
RGB	rgb(102, 91, 223)
HSL	hsl(245, 67%, 62%)
HSV	hsv(245, 59%, 87%)
CMYK	cmyk(54.3%, 59.2%, 0%, 12.5%)
CIE-LAB	lab(46.49, 40.11, -66.20)
CIE-LCH	lch(46.49, 77.41, 301.21°)
OKLab	oklab(55.52% 0.0396 -0.1899)
OKLCH	oklch(55.52% 0.194 281.8)
XYZ	xyz(22.5357, 15.6333, 71.6278)
Luminance	0.1563 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665BDF #D4DF5B

analogous

#5B92DF #665BDF #A85BDF

triadic

#665BDF #DF665B #5BDF66

tetradic

#665BDF #DF5B92 #D4DF5B #5BDFA8

square

#665BDF #DF5B92 #D4DF5B #5BDFA8

split-complementary

#665BDF #DFA85B #92DF5B

monochromatic

#2A1FA0 #3729D4 #665BDF #968EE9 #C6C1F3

Accessibility & contrast

On white

5.09

#665BDF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.13

#665BDF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665BDF

5.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665BDF	#FFFFFF	#000000	##FFFFFF
##665BDF	1.00	5.09	4.13	5.09
#FFFFFF	5.09	1.00	21.00	1.00
#000000	4.13	21.00	1.00	21.00
##FFFFFF	5.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0073E3

Deuteranopia (green-blind)

#0069DC

Tritanopia (blue-blind)

#2E7A94

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #665bdf;
/* rgb */ color: rgb(102, 91, 223);
/* oklch */ color: oklch(55.5% 0.194 281.8);

Tailwind

colors: {
  custom: {
    50: '#9b8aea',
    500: '#665bdf',
    950: '#000000',
  },
}

SCSS

$custom: #665bdf;
$custom-light: #9b8aea;
$custom-dark: #000000;

JSON

{
  "hex": "#665bdf",
  "rgb": {
    "r": 102,
    "g": 91,
    "b": 223
  },
  "hsl": {
    "h": 245,
    "s": 67.347,
    "l": 61.569
  },
  "oklch": {
    "l": 0.55523,
    "c": 0.19396,
    "h": 281.8
  },
  "luminance": 0.15635
}

Semantic roles & 50–950 ramp

primary

#665BDF

secondary

#DFE3B2

accent

#CF16C0

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0C16

muted

#7F7D84

Preview Lab

Preview with #665BDF

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

Preview Lab → · Contrast checker → · Palette generator →