#665CF0#665CF0

#665CF0 is a mid, highly saturated blue. Relative luminance 0.168; OKLCH L 57.0% C 0.214 H 280.2°. Best body text is #FFFFFF at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#665CF0
RGB	rgb(102, 92, 240)
HSL	hsl(244, 83%, 65%)
HSV	hsv(244, 62%, 94%)
CMYK	cmyk(57.5%, 61.7%, 0%, 5.9%)
CIE-LAB	lab(47.97, 44.77, -73.39)
CIE-LCH	lch(47.97, 85.96, 301.38°)
OKLab	oklab(57% 0.0378 -0.211)
OKLCH	oklch(57% 0.214 280.2)
XYZ	xyz(25.0299, 16.7686, 84.3389)
Luminance	0.1677 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665CF0 #E6F05C

analogous

#5C9CF0 #665CF0 #B05CF0

triadic

#665CF0 #F0665C #5CF066

tetradic

#665CF0 #F05C9C #E6F05C #5CF0B0

square

#665CF0 #F05C9C #E6F05C #5CF0B0

split-complementary

#665CF0 #F0B05C #9CF05C

monochromatic

#1D12C0 #3124EB #665CF0 #9B94F5 #CFCCFA

Accessibility & contrast

On white

4.82

#665CF0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.35

#665CF0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665CF0

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665CF0	#FFFFFF	#000000	##FFFFFF
##665CF0	1.00	4.82	4.35	4.82
#FFFFFF	4.82	1.00	21.00	1.00
#000000	4.35	21.00	1.00	21.00
##FFFFFF	4.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0077F5

Deuteranopia (green-blind)

#006CED

Tritanopia (blue-blind)

#09819D

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #665cf0;
/* rgb */ color: rgb(102, 92, 240);
/* oklch */ color: oklch(57.0% 0.214 280.2);

Tailwind

colors: {
  custom: {
    50: '#9e8bf6',
    500: '#665cf0',
    950: '#000000',
  },
}

SCSS

$custom: #665cf0;
$custom-light: #9e8bf6;
$custom-dark: #000000;

JSON

{
  "hex": "#665cf0",
  "rgb": {
    "r": 102,
    "g": 92,
    "b": 240
  },
  "hsl": {
    "h": 244.054,
    "s": 83.146,
    "l": 65.098
  },
  "oklch": {
    "l": 0.57,
    "c": 0.21436,
    "h": 280.2
  },
  "luminance": 0.1677
}

Semantic roles & 50–950 ramp

primary

#665CF0

secondary

#EAEDBB

accent

#E006D1

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C17

muted

#7F7D85

Preview Lab

Preview with #665CF0

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

Preview Lab → · Contrast checker → · Palette generator →