#665FCC#665FCC

#665FCC is a mid, vivid blue. Relative luminance 0.154; OKLCH L 54.8% C 0.163 H 282.5°. Best body text is #FFFFFF at 5.15:1 contrast (WCAG AA passes).

Color values

HEX	#665FCC
RGB	rgb(102, 95, 204)
HSL	hsl(244, 52%, 59%)
HSV	hsv(244, 53%, 80%)
CMYK	cmyk(50%, 53.4%, 0%, 20%)
CIE-LAB	lab(46.13, 31.88, -55.93)
CIE-LCH	lch(46.13, 64.37, 299.68°)
OKLab	oklab(54.85% 0.0353 -0.1596)
OKLCH	oklch(54.85% 0.163 282.5)
XYZ	xyz(20.4675, 15.3677, 59.0028)
Luminance	0.1537 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665FCC #C5CC5F

analogous

#5F8ECC #665FCC #9C5FCC

triadic

#665FCC #CC665F #5FCC66

tetradic

#665FCC #CC5F8E #C5CC5F #5FCC9C

square

#665FCC #CC5F8E #C5CC5F #5FCC9C

split-complementary

#665FCC #CC9C5F #8ECC5F

monochromatic

#312B86 #4139B4 #665FCC #928DDB #BFBCEA

Accessibility & contrast

On white

5.15

#665FCC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.07

#665FCC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665FCC

5.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665FCC	#FFFFFF	#000000	##FFFFFF
##665FCC	1.00	5.15	4.07	5.15
#FFFFFF	5.15	1.00	21.00	1.00
#000000	4.07	21.00	1.00	21.00
##FFFFFF	5.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2371D0

Deuteranopia (green-blind)

#196ACA

Tritanopia (blue-blind)

#3F778C

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #665fcc;
/* rgb */ color: rgb(102, 95, 204);
/* oklch */ color: oklch(54.8% 0.163 282.5);

Tailwind

colors: {
  custom: {
    50: '#998cdc',
    500: '#665fcc',
    950: '#000000',
  },
}

SCSS

$custom: #665fcc;
$custom-light: #998cdc;
$custom-dark: #000000;

JSON

{
  "hex": "#665fcc",
  "rgb": {
    "r": 102,
    "g": 95,
    "b": 204
  },
  "hsl": {
    "h": 243.853,
    "s": 51.659,
    "l": 58.627
  },
  "oklch": {
    "l": 0.54848,
    "c": 0.16349,
    "h": 282.5
  },
  "luminance": 0.15369
}

Semantic roles & 50–950 ramp

primary

#665FCC

secondary

#D6D9AE

accent

#DB4DD2

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0C15

muted

#7E7D83

Preview Lab

Preview with #665FCC

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

Preview Lab → · Contrast checker → · Palette generator →