#665FF1#665FF1

#665FF1 is a mid, highly saturated blue. Relative luminance 0.174; OKLCH L 57.6% C 0.212 H 279.5°. Best body text is #FFFFFF at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#665FF1
RGB	rgb(102, 95, 241)
HSL	hsl(243, 84%, 66%)
HSV	hsv(243, 61%, 95%)
CMYK	cmyk(57.7%, 60.6%, 0%, 5.5%)
CIE-LAB	lab(48.71, 43.33, -72.74)
CIE-LCH	lch(48.71, 84.67, 300.78°)
OKLab	oklab(57.57% 0.0351 -0.2091)
OKLCH	oklch(57.57% 0.212 279.5)
XYZ	xyz(25.4439, 17.3583, 85.2117)
Luminance	0.1736 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665FF1 #EAF15F

analogous

#5FA1F1 #665FF1 #AF5FF1

triadic

#665FF1 #F1665F #5FF166

tetradic

#665FF1 #F15FA1 #EAF15F #5FF1AF

square

#665FF1 #F15FA1 #EAF15F #5FF1AF

split-complementary

#665FF1 #F1AF5F #A1F15F

monochromatic

#1A11C4 #3027EC #665FF1 #9C97F6 #D2D0FB

Accessibility & contrast

On white

4.70

#665FF1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.47

#665FF1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665FF1

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665FF1	#FFFFFF	#000000	##FFFFFF
##665FF1	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)

#0079F6

Deuteranopia (green-blind)

#006EEE

Tritanopia (blue-blind)

#03839F

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #665ff1;
/* rgb */ color: rgb(102, 95, 241);
/* oklch */ color: oklch(57.6% 0.212 279.5);

Tailwind

colors: {
  custom: {
    50: '#9e8df7',
    500: '#665ff1',
    950: '#000000',
  },
}

SCSS

$custom: #665ff1;
$custom-light: #9e8df7;
$custom-dark: #000000;

JSON

{
  "hex": "#665ff1",
  "rgb": {
    "r": 102,
    "g": 95,
    "b": 241
  },
  "hsl": {
    "h": 242.877,
    "s": 83.908,
    "l": 65.882
  },
  "oklch": {
    "l": 0.57567,
    "c": 0.21201,
    "h": 279.5
  },
  "luminance": 0.1736
}

Semantic roles & 50–950 ramp

primary

#665FF1

secondary

#ECEEBE

accent

#E005D6

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C17

muted

#7F7D85

Preview Lab

Preview with #665FF1

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

Preview Lab → · Contrast checker → · Palette generator →