#6566F3#6566F3

#6566F3 is a mid, highly saturated blue. Relative luminance 0.187; OKLCH L 58.8% C 0.206 H 277.7°. Best body text is #000000 at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#6566F3
RGB	rgb(101, 102, 243)
HSL	hsl(240, 86%, 67%)
HSV	hsv(240, 58%, 95%)
CMYK	cmyk(58.4%, 58%, 0%, 4.7%)
CIE-LAB	lab(50.38, 39.66, -71.15)
CIE-LCH	lch(50.38, 81.45, 299.14°)
OKLab	oklab(58.83% 0.0275 -0.2044)
OKLCH	oklch(58.83% 0.206 277.7)
XYZ	xyz(26.2907, 18.7386, 87.0081)
Luminance	0.1874 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6566F3 #F3F265

analogous

#65ADF3 #6566F3 #AB65F3

triadic

#6566F3 #F36566 #66F365

tetradic

#6566F3 #F365AD #F3F265 #65F3AB

square

#6566F3 #F365AD #F3F265 #65F3AB

split-complementary

#6566F3 #F3AB65 #ADF365

monochromatic

#1011CE #2C2EEF #6566F3 #9E9EF7 #D7D7FC

Accessibility & contrast

On white

4.42

#6566F3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.75

#6566F3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6566F3

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6566F3	#FFFFFF	#000000	##000000
##6566F3	1.00	4.42	4.75	4.75
#FFFFFF	4.42	1.00	21.00	21.00
#000000	4.75	21.00	1.00	1.00
##000000	4.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#007EF8

Deuteranopia (green-blind)

#0072F0

Tritanopia (blue-blind)

#0088A3

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #6566f3;
/* rgb */ color: rgb(101, 102, 243);
/* oklch */ color: oklch(58.8% 0.206 277.7);

Tailwind

colors: {
  custom: {
    50: '#9d92f8',
    500: '#6566f3',
    950: '#000000',
  },
}

SCSS

$custom: #6566f3;
$custom-light: #9d92f8;
$custom-dark: #000000;

JSON

{
  "hex": "#6566f3",
  "rgb": {
    "r": 101,
    "g": 102,
    "b": 243
  },
  "hsl": {
    "h": 239.577,
    "s": 85.542,
    "l": 67.451
  },
  "oklch": {
    "l": 0.58826,
    "c": 0.20622,
    "h": 277.7
  },
  "luminance": 0.18741
}

Semantic roles & 50–950 ramp

primary

#6566F3

secondary

#F0F0C4

accent

#E003E2

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100D17

muted

#7F7D85

Preview Lab

Preview with #6566F3

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

Preview Lab → · Contrast checker → · Palette generator →