#665BE4#665BE4

#665BE4 is a mid, highly saturated blue. Relative luminance 0.159; OKLCH L 55.9% C 0.200 H 281.3°. Best body text is #FFFFFF at 5.02:1 contrast (WCAG AA passes).

Color values

HEX	#665BE4
RGB	rgb(102, 91, 228)
HSL	hsl(245, 72%, 63%)
HSV	hsv(245, 60%, 89%)
CMYK	cmyk(55.3%, 60.1%, 0%, 10.6%)
CIE-LAB	lab(46.85, 41.65, -68.44)
CIE-LCH	lch(46.85, 80.12, 301.32°)
OKLab	oklab(55.9% 0.0394 -0.1965)
OKLCH	oklch(55.9% 0.2 281.3)
XYZ	xyz(23.2198, 15.9069, 75.2305)
Luminance	0.1591 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665BE4 #D9E45B

analogous

#5B94E4 #665BE4 #AB5BE4

triadic

#665BE4 #E4665B #5BE466

tetradic

#665BE4 #E45B94 #D9E45B #5BE4AB

square

#665BE4 #E45B94 #D9E45B #5BE4AB

split-complementary

#665BE4 #E4AB5B #94E45B

monochromatic

#271CA9 #3526DB #665BE4 #9790ED #C8C4F5

Accessibility & contrast

On white

5.02

#665BE4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.18

#665BE4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665BE4

5.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665BE4	#FFFFFF	#000000	##FFFFFF
##665BE4	1.00	5.02	4.18	5.02
#FFFFFF	5.02	1.00	21.00	1.00
#000000	4.18	21.00	1.00	21.00
##FFFFFF	5.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0074E8

Deuteranopia (green-blind)

#006AE1

Tritanopia (blue-blind)

#277C97

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #665be4;
/* rgb */ color: rgb(102, 91, 228);
/* oklch */ color: oklch(55.9% 0.200 281.3);

Tailwind

colors: {
  custom: {
    50: '#9c8aed',
    500: '#665be4',
    950: '#000000',
  },
}

SCSS

$custom: #665be4;
$custom-light: #9c8aed;
$custom-dark: #000000;

JSON

{
  "hex": "#665be4",
  "rgb": {
    "r": 102,
    "g": 91,
    "b": 228
  },
  "hsl": {
    "h": 244.818,
    "s": 71.728,
    "l": 62.549
  },
  "oklch": {
    "l": 0.55904,
    "c": 0.20039,
    "h": 281.3
  },
  "luminance": 0.15908
}

Semantic roles & 50–950 ramp

primary

#665BE4

secondary

#E2E6B4

accent

#D412C4

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0C16

muted

#7F7D84

Preview Lab

Preview with #665BE4

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

Preview Lab → · Contrast checker → · Palette generator →