#6566E9#6566E9

#6566E9 is a mid, vivid blue. Relative luminance 0.182; OKLCH L 58.1% C 0.193 H 278.2°. Best body text is #000000 at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#6566E9
RGB	rgb(101, 102, 233)
HSL	hsl(240, 75%, 65%)
HSV	hsv(240, 57%, 91%)
CMYK	cmyk(56.7%, 56.2%, 0%, 8.6%)
CIE-LAB	lab(49.68, 36.50, -66.68)
CIE-LCH	lch(49.68, 76.02, 298.69°)
OKLab	oklab(58.08% 0.0276 -0.1912)
OKLCH	oklch(58.08% 0.193 278.2)
XYZ	xyz(24.8215, 18.1509, 79.2705)
Luminance	0.1815 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6566E9 #E9E865

analogous

#65A8E9 #6566E9 #A665E9

triadic

#6566E9 #E96566 #66E965

tetradic

#6566E9 #E965A8 #E9E865 #65E9A6

square

#6566E9 #E965A8 #E9E865 #65E9A6

split-complementary

#6566E9 #E9A665 #A8E965

monochromatic

#1A1CB9 #2F31E1 #6566E9 #9B9BF1 #D0D0F8

Accessibility & contrast

On white

4.54

#6566E9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.63

#6566E9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6566E9

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6566E9	#FFFFFF	#000000	##000000
##6566E9	1.00	4.54	4.63	4.63
#FFFFFF	4.54	1.00	21.00	21.00
#000000	4.63	21.00	1.00	1.00
##000000	4.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#007CED

Deuteranopia (green-blind)

#0071E6

Tritanopia (blue-blind)

#15859E

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #6566e9;
/* rgb */ color: rgb(101, 102, 233);
/* oklch */ color: oklch(58.1% 0.193 278.2);

Tailwind

colors: {
  custom: {
    50: '#9c91f1',
    500: '#6566e9',
    950: '#000000',
  },
}

SCSS

$custom: #6566e9;
$custom-light: #9c91f1;
$custom-dark: #000000;

JSON

{
  "hex": "#6566e9",
  "rgb": {
    "r": 101,
    "g": 102,
    "b": 233
  },
  "hsl": {
    "h": 239.545,
    "s": 75,
    "l": 65.49
  },
  "oklch": {
    "l": 0.58084,
    "c": 0.19322,
    "h": 278.2
  },
  "luminance": 0.18153
}

Semantic roles & 50–950 ramp

primary

#6566E9

secondary

#EBEBBF

accent

#D60ED7

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0D17

muted

#7F7D85

Preview Lab

Preview with #6566E9

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

Preview Lab → · Contrast checker → · Palette generator →