#665BC4#665BC4

#665BC4 is a mid, vivid blue. Relative luminance 0.143; OKLCH L 53.6% C 0.158 H 284.5°. Best body text is #FFFFFF at 5.44:1 contrast (WCAG AA passes).

Color values

HEX	#665BC4
RGB	rgb(102, 91, 196)
HSL	hsl(246, 47%, 56%)
HSV	hsv(246, 54%, 77%)
CMYK	cmyk(48%, 53.6%, 0%, 23.1%)
CIE-LAB	lab(44.65, 31.87, -53.71)
CIE-LCH	lch(44.65, 62.45, 300.68°)
OKLab	oklab(53.58% 0.0395 -0.1531)
OKLCH	oklch(53.58% 0.158 284.5)
XYZ	xyz(19.1814, 14.2916, 53.9617)
Luminance	0.1429 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665BC4 #B9C45B

analogous

#5B85C4 #665BC4 #9B5BC4

triadic

#665BC4 #C4665B #5BC466

tetradic

#665BC4 #C45B85 #B9C45B #5BC49B

square

#665BC4 #C45B85 #B9C45B #5BC49B

split-complementary

#665BC4 #C49B5B #85C45B

monochromatic

#342C79 #473CA6 #665BC4 #9088D4 #BAB5E4

Accessibility & contrast

On white

5.44

#665BC4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.86

#665BC4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665BC4

5.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665BC4	#FFFFFF	#000000	##FFFFFF
##665BC4	1.00	5.44	3.86	5.44
#FFFFFF	5.44	1.00	21.00	1.00
#000000	3.86	21.00	1.00	21.00
##FFFFFF	5.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#246DC8

Deuteranopia (green-blind)

#1E66C2

Tritanopia (blue-blind)

#457287

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #665bc4;
/* rgb */ color: rgb(102, 91, 196);
/* oklch */ color: oklch(53.6% 0.158 284.5);

Tailwind

colors: {
  custom: {
    50: '#9889d6',
    500: '#665bc4',
    950: '#000000',
  },
}

SCSS

$custom: #665bc4;
$custom-light: #9889d6;
$custom-dark: #000000;

JSON

{
  "hex": "#665bc4",
  "rgb": {
    "r": 102,
    "g": 91,
    "b": 196
  },
  "hsl": {
    "h": 246.286,
    "s": 47.085,
    "l": 56.275
  },
  "oklch": {
    "l": 0.53575,
    "c": 0.15813,
    "h": 284.5
  },
  "luminance": 0.14292
}

Semantic roles & 50–950 ramp

primary

#665BC4

secondary

#CED3A8

accent

#D751C9

background

#F9F8FD

surface

#F2F0FA

border

#CCCBD3

text

#0E0B14

muted

#7E7C83

Preview Lab

Preview with #665BC4

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

Preview Lab → · Contrast checker → · Palette generator →