#5B57BC#5B57BC

#5B57BC is a mid, vivid blue. Relative luminance 0.127; OKLCH L 51.4% C 0.154 H 281.3°. Best body text is #FFFFFF at 5.94:1 contrast (WCAG AA passes).

Color values

HEX	#5B57BC
RGB	rgb(91, 87, 188)
HSL	hsl(242, 43%, 54%)
HSV	hsv(242, 54%, 74%)
CMYK	cmyk(51.6%, 53.7%, 0%, 26.3%)
CIE-LAB	lab(42.26, 29.46, -52.95)
CIE-LCH	lch(42.26, 60.59, 299.09°)
OKLab	oklab(51.41% 0.0302 -0.1512)
OKLCH	oklch(51.41% 0.154 281.3)
XYZ	xyz(16.7969, 12.6704, 49.1278)
Luminance	0.1267 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B57BC #B8BC57

analogous

#5786BC #5B57BC #8E57BC

triadic

#5B57BC #BC5B57 #57BC5B

tetradic

#5B57BC #BC5786 #B8BC57 #57BC8E

square

#5B57BC #BC5786 #B8BC57 #57BC8E

split-complementary

#5B57BC #BC8E57 #86BC57

monochromatic

#2E2C6D #413D99 #5B57BC #8683CD #B0AFDF

Accessibility & contrast

On white

5.94

#5B57BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.53

#5B57BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5B57BC

5.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B57BC	#FFFFFF	#000000	##FFFFFF
##5B57BC	1.00	5.94	3.53	5.94
#FFFFFF	5.94	1.00	21.00	1.00
#000000	3.53	21.00	1.00	21.00
##FFFFFF	5.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E67BF

Deuteranopia (green-blind)

#1160BA

Tritanopia (blue-blind)

#346E81

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #5b57bc;
/* rgb */ color: rgb(91, 87, 188);
/* oklch */ color: oklch(51.4% 0.154 281.3);

Tailwind

colors: {
  custom: {
    50: '#9086d1',
    500: '#5b57bc',
    950: '#000000',
  },
}

SCSS

$custom: #5b57bc;
$custom-light: #9086d1;
$custom-dark: #000000;

JSON

{
  "hex": "#5b57bc",
  "rgb": {
    "r": 91,
    "g": 87,
    "b": 188
  },
  "hsl": {
    "h": 242.376,
    "s": 42.979,
    "l": 53.922
  },
  "oklch": {
    "l": 0.51408,
    "c": 0.15419,
    "h": 281.3
  },
  "luminance": 0.12671
}

Semantic roles & 50–950 ramp

primary

#5B57BC

secondary

#CBCDA2

accent

#D355CE

background

#F9F8FC

surface

#F2EFF9

border

#CCCAD2

text

#0D0B14

muted

#7E7C82

Preview Lab

Preview with #5B57BC

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

Preview Lab → · Contrast checker → · Palette generator →