#5B57BF#5B57BF

#5B57BF is a mid, vivid blue. Relative luminance 0.128; OKLCH L 51.6% C 0.158 H 281.0°. Best body text is #FFFFFF at 5.90:1 contrast (WCAG AA passes).

Color values

HEX	#5B57BF
RGB	rgb(91, 87, 191)
HSL	hsl(242, 45%, 55%)
HSV	hsv(242, 54%, 75%)
CMYK	cmyk(52.4%, 54.5%, 0%, 25.1%)
CIE-LAB	lab(42.46, 30.40, -54.37)
CIE-LCH	lch(42.46, 62.29, 299.21°)
OKLab	oklab(51.62% 0.0303 -0.1554)
OKLCH	oklch(51.62% 0.158 281)
XYZ	xyz(17.1237, 12.8011, 50.8487)
Luminance	0.1280 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B57BF #BBBF57

analogous

#5787BF #5B57BF #8F57BF

triadic

#5B57BF #BF5B57 #57BF5B

tetradic

#5B57BF #BF5787 #BBBF57 #57BF8F

square

#5B57BF #BF5787 #BBBF57 #57BF8F

split-complementary

#5B57BF #BF8F57 #87BF57

monochromatic

#2E2B71 #403C9D #5B57BF #8683D0 #B2B0E1

Accessibility & contrast

On white

5.90

#5B57BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.56

#5B57BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5B57BF

5.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B57BF	#FFFFFF	#000000	##FFFFFF
##5B57BF	1.00	5.90	3.56	5.90
#FFFFFF	5.90	1.00	21.00	1.00
#000000	3.56	21.00	1.00	21.00
##FFFFFF	5.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1968C3

Deuteranopia (green-blind)

#0660BD

Tritanopia (blue-blind)

#316E82

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #5b57bf;
/* rgb */ color: rgb(91, 87, 191);
/* oklch */ color: oklch(51.6% 0.158 281.0);

Tailwind

colors: {
  custom: {
    50: '#9186d3',
    500: '#5b57bf',
    950: '#000000',
  },
}

SCSS

$custom: #5b57bf;
$custom-light: #9186d3;
$custom-dark: #000000;

JSON

{
  "hex": "#5b57bf",
  "rgb": {
    "r": 91,
    "g": 87,
    "b": 191
  },
  "hsl": {
    "h": 242.308,
    "s": 44.828,
    "l": 54.51
  },
  "oklch": {
    "l": 0.5162,
    "c": 0.15833,
    "h": 281
  },
  "luminance": 0.12802
}

Semantic roles & 50–950 ramp

primary

#5B57BF

secondary

#CDCFA3

accent

#D553D0

background

#F9F8FD

surface

#F2EFFA

border

#CCCAD3

text

#0D0B14

muted

#7E7C83

Preview Lab

Preview with #5B57BF

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

Preview Lab → · Contrast checker → · Palette generator →