#5B66EA#5B66EA

#5B66EA is a mid, vivid blue. Relative luminance 0.177; OKLCH L 57.5% C 0.197 H 274.8°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#5B66EA
RGB	rgb(91, 102, 234)
HSL	hsl(235, 77%, 64%)
HSV	hsv(235, 61%, 92%)
CMYK	cmyk(61.1%, 56.4%, 0%, 8.2%)
CIE-LAB	lab(49.09, 35.09, -68.23)
CIE-LCH	lch(49.09, 76.73, 297.22°)
OKLab	oklab(57.5% 0.0164 -0.1961)
OKLCH	oklch(57.5% 0.197 274.8)
XYZ	xyz(23.9122, 17.6655, 79.9756)
Luminance	0.1767 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B66EA #EADF5B

analogous

#5BADEA #5B66EA #975BEA

triadic

#5B66EA #EA5B66 #66EA5B

tetradic

#5B66EA #EA5BAD #EADF5B #5BEA97

square

#5B66EA #EA5BAD #EADF5B #5BEA97

split-complementary

#5B66EA #EA975B #ADEA5B

monochromatic

#1723B4 #2533E3 #5B66EA #9199F1 #C8CBF8

Accessibility & contrast

On white

4.63

#5B66EA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#5B66EA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #5B66EA

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B66EA	#FFFFFF	#000000	##FFFFFF
##5B66EA	1.00	4.63	4.53	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#007BEE

Deuteranopia (green-blind)

#006FE7

Tritanopia (blue-blind)

#00869E

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #5b66ea;
/* rgb */ color: rgb(91, 102, 234);
/* oklch */ color: oklch(57.5% 0.197 274.8);

Tailwind

colors: {
  custom: {
    50: '#9791f2',
    500: '#5b66ea',
    950: '#000000',
  },
}

SCSS

$custom: #5b66ea;
$custom-light: #9791f2;
$custom-dark: #000000;

JSON

{
  "hex": "#5b66ea",
  "rgb": {
    "r": 91,
    "g": 102,
    "b": 234
  },
  "hsl": {
    "h": 235.385,
    "s": 77.297,
    "l": 63.725
  },
  "oklch": {
    "l": 0.57496,
    "c": 0.19674,
    "h": 274.8
  },
  "luminance": 0.17667
}

Semantic roles & 50–950 ramp

primary

#5B66EA

secondary

#EAE6B7

accent

#CA0CDA

background

#F9F8FE

surface

#F2F0FD

border

#CCCBD5

text

#0F0C17

muted

#7E7D85

Preview Lab

Preview with #5B66EA

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

Preview Lab → · Contrast checker → · Palette generator →