#5B57EC#5B57EC

#5B57EC is a mid, highly saturated blue. Relative luminance 0.151; OKLCH L 55.1% C 0.217 H 277.7°. Best body text is #FFFFFF at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#5B57EC
RGB	rgb(91, 87, 236)
HSL	hsl(242, 80%, 63%)
HSV	hsv(242, 63%, 93%)
CMYK	cmyk(61.4%, 63.1%, 0%, 7.5%)
CIE-LAB	lab(45.76, 44.71, -74.77)
CIE-LCH	lch(45.76, 87.12, 300.88°)
OKLab	oklab(55.09% 0.0292 -0.2154)
OKLCH	oklch(55.09% 0.217 277.7)
XYZ	xyz(22.8580, 15.0949, 81.0497)
Luminance	0.1510 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B57EC #E8EC57

analogous

#579DEC #5B57EC #A557EC

triadic

#5B57EC #EC5B57 #57EC5B

tetradic

#5B57EC #EC579D #E8EC57 #57ECA5

square

#5B57EC #EC579D #E8EC57 #57ECA5

split-complementary

#5B57EC #ECA557 #9DEC57

monochromatic

#1914B4 #2520E6 #5B57EC #918EF2 #C6C5F8

Accessibility & contrast

On white

5.22

#5B57EC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.02

#5B57EC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5B57EC

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B57EC	#FFFFFF	#000000	##FFFFFF
##5B57EC	1.00	5.22	4.02	5.22
#FFFFFF	5.22	1.00	21.00	1.00
#000000	4.02	21.00	1.00	21.00
##FFFFFF	5.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0073F1

Deuteranopia (green-blind)

#0066E9

Tritanopia (blue-blind)

#007D9A

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #5b57ec;
/* rgb */ color: rgb(91, 87, 236);
/* oklch */ color: oklch(55.1% 0.217 277.7);

Tailwind

colors: {
  custom: {
    50: '#9887f3',
    500: '#5b57ec',
    950: '#000000',
  },
}

SCSS

$custom: #5b57ec;
$custom-light: #9887f3;
$custom-dark: #000000;

JSON

{
  "hex": "#5b57ec",
  "rgb": {
    "r": 91,
    "g": 87,
    "b": 236
  },
  "hsl": {
    "h": 241.611,
    "s": 79.679,
    "l": 63.333
  },
  "oklch": {
    "l": 0.55093,
    "c": 0.21734,
    "h": 277.7
  },
  "luminance": 0.15097
}

Semantic roles & 50–950 ramp

primary

#5B57EC

secondary

#E9EAB5

accent

#DC0AD6

background

#FAF8FF

surface

#F4EFFE

border

#CECAD6

text

#0F0B17

muted

#7F7C85

Preview Lab

Preview with #5B57EC

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

Preview Lab → · Contrast checker → · Palette generator →