#665EF0#665EF0

#665EF0 is a mid, highly saturated blue. Relative luminance 0.171; OKLCH L 57.3% C 0.212 H 279.8°. Best body text is #FFFFFF at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#665EF0
RGB	rgb(102, 94, 240)
HSL	hsl(243, 83%, 65%)
HSV	hsv(243, 61%, 94%)
CMYK	cmyk(57.5%, 60.8%, 0%, 5.9%)
CIE-LAB	lab(48.41, 43.60, -72.67)
CIE-LCH	lch(48.41, 84.74, 300.97°)
OKLab	oklab(57.33% 0.0361 -0.2089)
OKLCH	oklch(57.33% 0.212 279.8)
XYZ	xyz(25.2054, 17.1197, 84.3974)
Luminance	0.1712 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665EF0 #E8F05E

analogous

#5E9FF0 #665EF0 #AF5EF0

triadic

#665EF0 #F0665E #5EF066

tetradic

#665EF0 #F05E9F #E8F05E #5EF0AF

square

#665EF0 #F05E9F #E8F05E #5EF0AF

split-complementary

#665EF0 #F0AF5E #9FF05E

monochromatic

#1C12C2 #3126EB #665EF0 #9B96F5 #D0CEFA

Accessibility & contrast

On white

4.75

#665EF0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.42

#665EF0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665EF0

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665EF0	#FFFFFF	#000000	##FFFFFF
##665EF0	1.00	4.75	4.42	4.75
#FFFFFF	4.75	1.00	21.00	1.00
#000000	4.42	21.00	1.00	21.00
##FFFFFF	4.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0079F5

Deuteranopia (green-blind)

#006DED

Tritanopia (blue-blind)

#08829E

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #665ef0;
/* rgb */ color: rgb(102, 94, 240);
/* oklch */ color: oklch(57.3% 0.212 279.8);

Tailwind

colors: {
  custom: {
    50: '#9e8cf6',
    500: '#665ef0',
    950: '#000000',
  },
}

SCSS

$custom: #665ef0;
$custom-light: #9e8cf6;
$custom-dark: #000000;

JSON

{
  "hex": "#665ef0",
  "rgb": {
    "r": 102,
    "g": 94,
    "b": 240
  },
  "hsl": {
    "h": 243.288,
    "s": 82.955,
    "l": 65.49
  },
  "oklch": {
    "l": 0.57325,
    "c": 0.21195,
    "h": 279.8
  },
  "luminance": 0.17121
}

Semantic roles & 50–950 ramp

primary

#665EF0

secondary

#EBEDBC

accent

#DF06D3

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C17

muted

#7F7D85

Preview Lab

Preview with #665EF0

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

Preview Lab → · Contrast checker → · Palette generator →