#665EF1#665EF1

#665EF1 is a mid, highly saturated blue. Relative luminance 0.172; OKLCH L 57.4% C 0.213 H 279.7°. Best body text is #FFFFFF at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#665EF1
RGB	rgb(102, 94, 241)
HSL	hsl(243, 84%, 66%)
HSV	hsv(243, 61%, 95%)
CMYK	cmyk(57.7%, 61%, 0%, 5.5%)
CIE-LAB	lab(48.49, 43.91, -73.10)
CIE-LCH	lch(48.49, 85.28, 300.99°)
OKLab	oklab(57.4% 0.036 -0.2101)
OKLCH	oklch(57.4% 0.213 279.7)
XYZ	xyz(25.3544, 17.1793, 85.1819)
Luminance	0.1718 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665EF1 #E9F15E

analogous

#5E9FF1 #665EF1 #AF5EF1

triadic

#665EF1 #F1665E #5EF166

tetradic

#665EF1 #F15E9F #E9F15E #5EF1AF

square

#665EF1 #F15E9F #E9F15E #5EF1AF

split-complementary

#665EF1 #F1AF5E #9FF15E

monochromatic

#1B11C4 #3026EC #665EF1 #9C96F6 #D1CFFB

Accessibility & contrast

On white

4.73

#665EF1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.44

#665EF1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665EF1

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665EF1	#FFFFFF	#000000	##FFFFFF
##665EF1	1.00	4.73	4.44	4.73
#FFFFFF	4.73	1.00	21.00	1.00
#000000	4.44	21.00	1.00	21.00
##FFFFFF	4.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0079F6

Deuteranopia (green-blind)

#006DEE

Tritanopia (blue-blind)

#03829F

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #665ef1;
/* rgb */ color: rgb(102, 94, 241);
/* oklch */ color: oklch(57.4% 0.213 279.7);

Tailwind

colors: {
  custom: {
    50: '#9e8cf7',
    500: '#665ef1',
    950: '#000000',
  },
}

SCSS

$custom: #665ef1;
$custom-light: #9e8cf7;
$custom-dark: #000000;

JSON

{
  "hex": "#665ef1",
  "rgb": {
    "r": 102,
    "g": 94,
    "b": 241
  },
  "hsl": {
    "h": 243.265,
    "s": 84,
    "l": 65.686
  },
  "oklch": {
    "l": 0.57403,
    "c": 0.21321,
    "h": 279.7
  },
  "luminance": 0.17181
}

Semantic roles & 50–950 ramp

primary

#665EF1

secondary

#EBEEBD

accent

#E005D5

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C17

muted

#7F7D85

Preview Lab

Preview with #665EF1

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

Preview Lab → · Contrast checker → · Palette generator →