#5B57E9#5B57E9

#5B57E9 is a mid, highly saturated blue. Relative luminance 0.149; OKLCH L 54.8% C 0.214 H 277.9°. Best body text is #FFFFFF at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#5B57E9
RGB	rgb(91, 87, 233)
HSL	hsl(242, 77%, 63%)
HSV	hsv(242, 63%, 91%)
CMYK	cmyk(60.9%, 62.7%, 0%, 8.6%)
CIE-LAB	lab(45.53, 43.76, -73.46)
CIE-LCH	lch(45.53, 85.51, 300.78°)
OKLab	oklab(54.85% 0.0294 -0.2115)
OKLCH	oklch(54.85% 0.214 277.9)
XYZ	xyz(22.4258, 14.9220, 78.7735)
Luminance	0.1492 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B57E9 #E5E957

analogous

#579CE9 #5B57E9 #A457E9

triadic

#5B57E9 #E95B57 #57E95B

tetradic

#5B57E9 #E9579C #E5E957 #57E9A4

square

#5B57E9 #E9579C #E5E957 #57E9A4

split-complementary

#5B57E9 #E9A457 #9CE957

monochromatic

#1B17AF #2621E2 #5B57E9 #908DF0 #C5C3F7

Accessibility & contrast

On white

5.27

#5B57E9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.98

#5B57E9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5B57E9

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B57E9	#FFFFFF	#000000	##FFFFFF
##5B57E9	1.00	5.27	3.98	5.27
#FFFFFF	5.27	1.00	21.00	1.00
#000000	3.98	21.00	1.00	21.00
##FFFFFF	5.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0072EE

Deuteranopia (green-blind)

#0066E6

Tritanopia (blue-blind)

#007C98

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #5b57e9;
/* rgb */ color: rgb(91, 87, 233);
/* oklch */ color: oklch(54.8% 0.214 277.9);

Tailwind

colors: {
  custom: {
    50: '#9787f1',
    500: '#5b57e9',
    950: '#000000',
  },
}

SCSS

$custom: #5b57e9;
$custom-light: #9787f1;
$custom-dark: #000000;

JSON

{
  "hex": "#5b57e9",
  "rgb": {
    "r": 91,
    "g": 87,
    "b": 233
  },
  "hsl": {
    "h": 241.644,
    "s": 76.842,
    "l": 62.745
  },
  "oklch": {
    "l": 0.54847,
    "c": 0.21357,
    "h": 277.9
  },
  "luminance": 0.14924
}

Semantic roles & 50–950 ramp

primary

#5B57E9

secondary

#E7E8B3

accent

#D90CD3

background

#FAF8FE

surface

#F3EFFD

border

#CDCAD5

text

#0F0B17

muted

#7F7C85

Preview Lab

Preview with #5B57E9

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

Preview Lab → · Contrast checker → · Palette generator →