#665BE5#665BE5

#665BE5 is a mid, highly saturated blue. Relative luminance 0.160; OKLCH L 56.0% C 0.202 H 281.3°. Best body text is #FFFFFF at 5.01:1 contrast (WCAG AA passes).

Color values

HEX	#665BE5
RGB	rgb(102, 91, 229)
HSL	hsl(245, 73%, 63%)
HSV	hsv(245, 60%, 90%)
CMYK	cmyk(55.5%, 60.3%, 0%, 10.2%)
CIE-LAB	lab(46.93, 41.96, -68.89)
CIE-LCH	lch(46.93, 80.66, 301.34°)
OKLab	oklab(55.98% 0.0394 -0.1978)
OKLCH	oklch(55.98% 0.202 281.3)
XYZ	xyz(23.3590, 15.9626, 75.9637)
Luminance	0.1596 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665BE5 #DAE55B

analogous

#5B95E5 #665BE5 #AB5BE5

triadic

#665BE5 #E5665B #5BE566

tetradic

#665BE5 #E55B95 #DAE55B #5BE5AB

square

#665BE5 #E55B95 #DAE55B #5BE5AB

split-complementary

#665BE5 #E5AB5B #95E55B

monochromatic

#261BAB #3526DD #665BE5 #9790ED #C9C5F6

Accessibility & contrast

On white

5.01

#665BE5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.19

#665BE5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665BE5

5.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665BE5	#FFFFFF	#000000	##FFFFFF
##665BE5	1.00	5.01	4.19	5.01
#FFFFFF	5.01	1.00	21.00	1.00
#000000	4.19	21.00	1.00	21.00
##FFFFFF	5.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0074E9

Deuteranopia (green-blind)

#006AE2

Tritanopia (blue-blind)

#257C97

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #665be5;
/* rgb */ color: rgb(102, 91, 229);
/* oklch */ color: oklch(56.0% 0.202 281.3);

Tailwind

colors: {
  custom: {
    50: '#9c8aee',
    500: '#665be5',
    950: '#000000',
  },
}

SCSS

$custom: #665be5;
$custom-light: #9c8aee;
$custom-dark: #000000;

JSON

{
  "hex": "#665be5",
  "rgb": {
    "r": 102,
    "g": 91,
    "b": 229
  },
  "hsl": {
    "h": 244.783,
    "s": 72.632,
    "l": 62.745
  },
  "oklch": {
    "l": 0.5598,
    "c": 0.20166,
    "h": 281.3
  },
  "luminance": 0.15964
}

Semantic roles & 50–950 ramp

primary

#665BE5

secondary

#E3E7B5

accent

#D511C5

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0C16

muted

#7F7D84

Preview Lab

Preview with #665BE5

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

Preview Lab → · Contrast checker → · Palette generator →