#665AF0#665AF0

#665AF0 is a mid, highly saturated blue. Relative luminance 0.164; OKLCH L 56.7% C 0.217 H 280.5°. Best body text is #FFFFFF at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#665AF0
RGB	rgb(102, 90, 240)
HSL	hsl(245, 83%, 65%)
HSV	hsv(245, 63%, 94%)
CMYK	cmyk(57.5%, 62.5%, 0%, 5.9%)
CIE-LAB	lab(47.53, 45.92, -74.10)
CIE-LCH	lch(47.53, 87.18, 301.79°)
OKLab	oklab(56.68% 0.0396 -0.2131)
OKLCH	oklch(56.68% 0.217 280.5)
XYZ	xyz(24.8589, 16.4267, 84.2819)
Luminance	0.1643 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665AF0 #E4F05A

analogous

#5A99F0 #665AF0 #B15AF0

triadic

#665AF0 #F0665A #5AF066

tetradic

#665AF0 #F05A99 #E4F05A #5AF0B1

square

#665AF0 #F05A99 #E4F05A #5AF0B1

split-complementary

#665AF0 #F0B15A #99F05A

monochromatic

#1F11BE #3222EB #665AF0 #9A92F5 #CECAFA

Accessibility & contrast

On white

4.90

#665AF0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.29

#665AF0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665AF0

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665AF0	#FFFFFF	#000000	##FFFFFF
##665AF0	1.00	4.90	4.29	4.90
#FFFFFF	4.90	1.00	21.00	1.00
#000000	4.29	21.00	1.00	21.00
##FFFFFF	4.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0076F5

Deuteranopia (green-blind)

#006BED

Tritanopia (blue-blind)

#0B7F9D

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #665af0;
/* rgb */ color: rgb(102, 90, 240);
/* oklch */ color: oklch(56.7% 0.217 280.5);

Tailwind

colors: {
  custom: {
    50: '#9e89f6',
    500: '#665af0',
    950: '#000000',
  },
}

SCSS

$custom: #665af0;
$custom-light: #9e89f6;
$custom-dark: #000000;

JSON

{
  "hex": "#665af0",
  "rgb": {
    "r": 102,
    "g": 90,
    "b": 240
  },
  "hsl": {
    "h": 244.8,
    "s": 83.333,
    "l": 64.706
  },
  "oklch": {
    "l": 0.56681,
    "c": 0.21675,
    "h": 280.5
  },
  "luminance": 0.16428
}

Semantic roles & 50–950 ramp

primary

#665AF0

secondary

#E9EDB9

accent

#E006CE

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C17

muted

#7F7D85

Preview Lab

Preview with #665AF0

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

Preview Lab → · Contrast checker → · Palette generator →