#665EF5#665EF5

#665EF5 is a mid, highly saturated blue. Relative luminance 0.174; OKLCH L 57.7% C 0.218 H 279.4°. Best body text is #FFFFFF at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#665EF5
RGB	rgb(102, 94, 245)
HSL	hsl(243, 88%, 66%)
HSV	hsv(243, 62%, 96%)
CMYK	cmyk(58.4%, 61.6%, 0%, 3.9%)
CIE-LAB	lab(48.79, 45.15, -74.85)
CIE-LCH	lch(48.79, 87.42, 301.10°)
OKLab	oklab(57.72% 0.0358 -0.2153)
OKLCH	oklch(57.72% 0.218 279.4)
XYZ	xyz(25.9584, 17.4209, 88.3632)
Luminance	0.1742 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665EF5 #EDF55E

analogous

#5EA2F5 #665EF5 #B25EF5

triadic

#665EF5 #F5665E #5EF566

tetradic

#665EF5 #F55EA2 #EDF55E #5EF5B2

square

#665EF5 #F55EA2 #EDF55E #5EF5B2

split-complementary

#665EF5 #F5B25E #A2F55E

monochromatic

#170DCC #2F24F1 #665EF5 #9D98F9 #D4D1FC

Accessibility & contrast

On white

4.68

#665EF5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.48

#665EF5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665EF5

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665EF5	#FFFFFF	#000000	##FFFFFF
##665EF5	1.00	4.68	4.48	4.68
#FFFFFF	4.68	1.00	21.00	1.00
#000000	4.48	21.00	1.00	21.00
##FFFFFF	4.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#007AFA

Deuteranopia (green-blind)

#006EF2

Tritanopia (blue-blind)

#0083A1

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #665ef5;
/* rgb */ color: rgb(102, 94, 245);
/* oklch */ color: oklch(57.7% 0.218 279.4);

Tailwind

colors: {
  custom: {
    50: '#9f8cf9',
    500: '#665ef5',
    950: '#000000',
  },
}

SCSS

$custom: #665ef5;
$custom-light: #9f8cf9;
$custom-dark: #000000;

JSON

{
  "hex": "#665ef5",
  "rgb": {
    "r": 102,
    "g": 94,
    "b": 245
  },
  "hsl": {
    "h": 243.179,
    "s": 88.304,
    "l": 66.471
  },
  "oklch": {
    "l": 0.57717,
    "c": 0.21824,
    "h": 279.4
  },
  "luminance": 0.17423
}

Semantic roles & 50–950 ramp

primary

#665EF5

secondary

#EDF0BF

accent

#E501D9

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C17

muted

#7F7D85

Preview Lab

Preview with #665EF5

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

Preview Lab → · Contrast checker → · Palette generator →