#5B57DD#5B57DD

#5B57DD is a mid, vivid blue. Relative luminance 0.143; OKLCH L 53.9% C 0.198 H 278.7°. Best body text is #FFFFFF at 5.45:1 contrast (WCAG AA passes).

Color values

HEX	#5B57DD
RGB	rgb(91, 87, 221)
HSL	hsl(242, 66%, 60%)
HSV	hsv(242, 61%, 87%)
CMYK	cmyk(58.8%, 60.6%, 0%, 13.3%)
CIE-LAB	lab(44.60, 39.94, -68.17)
CIE-LCH	lch(44.60, 79.01, 300.37°)
OKLab	oklab(53.88% 0.0301 -0.196)
OKLCH	oklch(53.88% 0.198 278.7)
XYZ	xyz(20.7696, 14.2595, 70.0505)
Luminance	0.1426 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B57DD #D9DD57

analogous

#5796DD #5B57DD #9E57DD

triadic

#5B57DD #DD5B57 #57DD5B

tetradic

#5B57DD #DD5796 #D9DD57 #57DD9E

square

#5B57DD #DD5796 #D9DD57 #57DD9E

split-complementary

#5B57DD #DD9E57 #96DD57

monochromatic

#231F9A #2E2ACD #5B57DD #8D8AE7 #BEBDF2

Accessibility & contrast

On white

5.45

#5B57DD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.85

#5B57DD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5B57DD

5.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B57DD	#FFFFFF	#000000	##FFFFFF
##5B57DD	1.00	5.45	3.85	5.45
#FFFFFF	5.45	1.00	21.00	1.00
#000000	3.85	21.00	1.00	21.00
##FFFFFF	5.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006FE1

Deuteranopia (green-blind)

#0064DA

Tritanopia (blue-blind)

#007892

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #5b57dd;
/* rgb */ color: rgb(91, 87, 221);
/* oklch */ color: oklch(53.9% 0.198 278.7);

Tailwind

colors: {
  custom: {
    50: '#9587e9',
    500: '#5b57dd',
    950: '#000000',
  },
}

SCSS

$custom: #5b57dd;
$custom-light: #9587e9;
$custom-dark: #000000;

JSON

{
  "hex": "#5b57dd",
  "rgb": {
    "r": 91,
    "g": 87,
    "b": 221
  },
  "hsl": {
    "h": 241.791,
    "s": 66.337,
    "l": 60.392
  },
  "oklch": {
    "l": 0.53881,
    "c": 0.19829,
    "h": 278.7
  },
  "luminance": 0.14261
}

Semantic roles & 50–950 ramp

primary

#5B57DD

secondary

#E0E1AE

accent

#CE17C9

background

#F9F8FE

surface

#F2EFFD

border

#CCCAD5

text

#0E0B16

muted

#7E7C84

Preview Lab

Preview with #5B57DD

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

Preview Lab → · Contrast checker → · Palette generator →