#5B57CD#5B57CD

#5B57CD is a mid, vivid blue. Relative luminance 0.134; OKLCH L 52.6% C 0.177 H 279.9°. Best body text is #FFFFFF at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#5B57CD
RGB	rgb(91, 87, 205)
HSL	hsl(242, 54%, 57%)
HSV	hsv(242, 58%, 80%)
CMYK	cmyk(55.6%, 57.6%, 0%, 19.6%)
CIE-LAB	lab(43.43, 34.85, -60.91)
CIE-LCH	lch(43.43, 70.18, 299.77°)
OKLab	oklab(52.65% 0.0305 -0.1746)
OKLCH	oklch(52.65% 0.177 279.9)
XYZ	xyz(18.7386, 13.4471, 59.3539)
Luminance	0.1345 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B57CD #C9CD57

analogous

#578ECD #5B57CD #9657CD

triadic

#5B57CD #CD5B57 #57CD5B

tetradic

#5B57CD #CD578E #C9CD57 #57CD96

square

#5B57CD #CD578E #C9CD57 #57CD96

split-complementary

#5B57CD #CD9657 #8ECD57

monochromatic

#2A2783 #3935B2 #5B57CD #8986DB #B7B5E9

Accessibility & contrast

On white

5.69

#5B57CD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#5B57CD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5B57CD

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B57CD	#FFFFFF	#000000	##FFFFFF
##5B57CD	1.00	5.69	3.69	5.69
#FFFFFF	5.69	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006BD1

Deuteranopia (green-blind)

#0062CB

Tritanopia (blue-blind)

#217389

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #5b57cd;
/* rgb */ color: rgb(91, 87, 205);
/* oklch */ color: oklch(52.6% 0.177 279.9);

Tailwind

colors: {
  custom: {
    50: '#9386dd',
    500: '#5b57cd',
    950: '#000000',
  },
}

SCSS

$custom: #5b57cd;
$custom-light: #9386dd;
$custom-dark: #000000;

JSON

{
  "hex": "#5b57cd",
  "rgb": {
    "r": 91,
    "g": 87,
    "b": 205
  },
  "hsl": {
    "h": 242.034,
    "s": 54.128,
    "l": 57.255
  },
  "oklch": {
    "l": 0.52646,
    "c": 0.17729,
    "h": 279.9
  },
  "luminance": 0.13448
}

Semantic roles & 50–950 ramp

primary

#5B57CD

secondary

#D6D8A8

accent

#DD4AD9

background

#F9F8FD

surface

#F2EFFB

border

#CCCAD4

text

#0E0B15

muted

#7E7C83

Preview Lab

Preview with #5B57CD

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

Preview Lab → · Contrast checker → · Palette generator →