#665BE3#665BE3

#665BE3 is a mid, vivid blue. Relative luminance 0.159; OKLCH L 55.8% C 0.199 H 281.4°. Best body text is #FFFFFF at 5.04:1 contrast (WCAG AA passes).

Color values

HEX	#665BE3
RGB	rgb(102, 91, 227)
HSL	hsl(245, 71%, 62%)
HSV	hsv(245, 60%, 89%)
CMYK	cmyk(55.1%, 59.9%, 0%, 11%)
CIE-LAB	lab(46.78, 41.34, -68.00)
CIE-LCH	lch(46.78, 79.58, 301.30°)
OKLab	oklab(55.83% 0.0395 -0.1952)
OKLCH	oklch(55.83% 0.199 281.4)
XYZ	xyz(23.0814, 15.8516, 74.5015)
Luminance	0.1585 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665BE3 #D8E35B

analogous

#5B94E3 #665BE3 #AA5BE3

triadic

#665BE3 #E3665B #5BE366

tetradic

#665BE3 #E35B94 #D8E35B #5BE3AA

square

#665BE3 #E35B94 #D8E35B #5BE3AA

split-complementary

#665BE3 #E3AA5B #94E35B

monochromatic

#281DA7 #3527DA #665BE3 #978FEC #C8C4F5

Accessibility & contrast

On white

5.04

#665BE3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.17

#665BE3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665BE3

5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665BE3	#FFFFFF	#000000	##FFFFFF
##665BE3	1.00	5.04	4.17	5.04
#FFFFFF	5.04	1.00	21.00	1.00
#000000	4.17	21.00	1.00	21.00
##FFFFFF	5.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0074E7

Deuteranopia (green-blind)

#006AE0

Tritanopia (blue-blind)

#287C96

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #665be3;
/* rgb */ color: rgb(102, 91, 227);
/* oklch */ color: oklch(55.8% 0.199 281.4);

Tailwind

colors: {
  custom: {
    50: '#9c8aed',
    500: '#665be3',
    950: '#000000',
  },
}

SCSS

$custom: #665be3;
$custom-light: #9c8aed;
$custom-dark: #000000;

JSON

{
  "hex": "#665be3",
  "rgb": {
    "r": 102,
    "g": 91,
    "b": 227
  },
  "hsl": {
    "h": 244.853,
    "s": 70.833,
    "l": 62.353
  },
  "oklch": {
    "l": 0.55827,
    "c": 0.19911,
    "h": 281.4
  },
  "luminance": 0.15853
}

Semantic roles & 50–950 ramp

primary

#665BE3

secondary

#E2E6B4

accent

#D313C3

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0C16

muted

#7F7D84

Preview Lab

Preview with #665BE3

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

Preview Lab → · Contrast checker → · Palette generator →