#665EF4#665EF4

#665EF4 is a mid, highly saturated blue. Relative luminance 0.174; OKLCH L 57.6% C 0.217 H 279.5°. Best body text is #FFFFFF at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#665EF4
RGB	rgb(102, 94, 244)
HSL	hsl(243, 87%, 66%)
HSV	hsv(243, 61%, 96%)
CMYK	cmyk(58.2%, 61.5%, 0%, 4.3%)
CIE-LAB	lab(48.71, 44.84, -74.42)
CIE-LCH	lch(48.71, 86.88, 301.07°)
OKLab	oklab(57.64% 0.0358 -0.214)
OKLCH	oklch(57.64% 0.217 279.5)
XYZ	xyz(25.8062, 17.3600, 87.5614)
Luminance	0.1736 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665EF4 #ECF45E

analogous

#5EA1F4 #665EF4 #B15EF4

triadic

#665EF4 #F4665E #5EF466

tetradic

#665EF4 #F45EA1 #ECF45E #5EF4B1

square

#665EF4 #F45EA1 #ECF45E #5EF4B1

split-complementary

#665EF4 #F4B15E #A1F45E

monochromatic

#180ECA #3025F0 #665EF4 #9C97F8 #D3D1FC

Accessibility & contrast

On white

4.70

#665EF4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.47

#665EF4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665EF4

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665EF4	#FFFFFF	#000000	##FFFFFF
##665EF4	1.00	4.70	4.47	4.70
#FFFFFF	4.70	1.00	21.00	1.00
#000000	4.47	21.00	1.00	21.00
##FFFFFF	4.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#007AF9

Deuteranopia (green-blind)

#006EF1

Tritanopia (blue-blind)

#0083A0

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #665ef4;
/* rgb */ color: rgb(102, 94, 244);
/* oklch */ color: oklch(57.6% 0.217 279.5);

Tailwind

colors: {
  custom: {
    50: '#9e8cf9',
    500: '#665ef4',
    950: '#000000',
  },
}

SCSS

$custom: #665ef4;
$custom-light: #9e8cf9;
$custom-dark: #000000;

JSON

{
  "hex": "#665ef4",
  "rgb": {
    "r": 102,
    "g": 94,
    "b": 244
  },
  "hsl": {
    "h": 243.2,
    "s": 87.209,
    "l": 66.275
  },
  "oklch": {
    "l": 0.57638,
    "c": 0.21699,
    "h": 279.5
  },
  "luminance": 0.17362
}

Semantic roles & 50–950 ramp

primary

#665EF4

secondary

#EDEFBE

accent

#E402D8

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C17

muted

#7F7D85

Preview Lab

Preview with #665EF4

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

Preview Lab → · Contrast checker → · Palette generator →