#5B57DB#5B57DB

#5B57DB is a mid, vivid blue. Relative luminance 0.142; OKLCH L 53.7% C 0.196 H 278.9°. Best body text is #FFFFFF at 5.48:1 contrast (WCAG AA passes).

Color values

HEX	#5B57DB
RGB	rgb(91, 87, 219)
HSL	hsl(242, 65%, 60%)
HSV	hsv(242, 60%, 86%)
CMYK	cmyk(58.4%, 60.3%, 0%, 14.1%)
CIE-LAB	lab(44.45, 39.31, -67.27)
CIE-LCH	lch(44.45, 77.91, 300.30°)
OKLab	oklab(53.72% 0.0302 -0.1934)
OKLCH	oklch(53.72% 0.196 278.9)
XYZ	xyz(20.5047, 14.1535, 68.6555)
Luminance	0.1416 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B57DB #D7DB57

analogous

#5795DB #5B57DB #9D57DB

triadic

#5B57DB #DB5B57 #57DB5B

tetradic

#5B57DB #DB5795 #D7DB57 #57DB9D

square

#5B57DB #DB5795 #D7DB57 #57DB9D

split-complementary

#5B57DB #DB9D57 #95DB57

monochromatic

#242097 #302BCA #5B57DB #8C89E6 #BDBCF1

Accessibility & contrast

On white

5.48

#5B57DB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.83

#5B57DB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5B57DB

5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B57DB	#FFFFFF	#000000	##FFFFFF
##5B57DB	1.00	5.48	3.83	5.48
#FFFFFF	5.48	1.00	21.00	1.00
#000000	3.83	21.00	1.00	21.00
##FFFFFF	5.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006EDF

Deuteranopia (green-blind)

#0064D8

Tritanopia (blue-blind)

#007791

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #5b57db;
/* rgb */ color: rgb(91, 87, 219);
/* oklch */ color: oklch(53.7% 0.196 278.9);

Tailwind

colors: {
  custom: {
    50: '#9587e7',
    500: '#5b57db',
    950: '#000000',
  },
}

SCSS

$custom: #5b57db;
$custom-light: #9587e7;
$custom-dark: #000000;

JSON

{
  "hex": "#5b57db",
  "rgb": {
    "r": 91,
    "g": 87,
    "b": 219
  },
  "hsl": {
    "h": 241.818,
    "s": 64.706,
    "l": 60
  },
  "oklch": {
    "l": 0.53723,
    "c": 0.1957,
    "h": 278.9
  },
  "luminance": 0.14155
}

Semantic roles & 50–950 ramp

primary

#5B57DB

secondary

#DFE0AD

accent

#E840E3

background

#F9F8FE

surface

#F2EFFD

border

#CCCAD5

text

#0E0B16

muted

#7E7C84

Preview Lab

Preview with #5B57DB

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

Preview Lab → · Contrast checker → · Palette generator →