#5B5FDB#5B5FDB

#5B5FDB is a mid, vivid blue. Relative luminance 0.155; OKLCH L 55.1% C 0.186 H 277.0°. Best body text is #FFFFFF at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#5B5FDB
RGB	rgb(91, 95, 219)
HSL	hsl(238, 64%, 61%)
HSV	hsv(238, 58%, 86%)
CMYK	cmyk(58.4%, 56.6%, 0%, 14.1%)
CIE-LAB	lab(46.34, 34.47, -64.21)
CIE-LCH	lch(46.34, 72.87, 298.23°)
OKLab	oklab(55.12% 0.0227 -0.1843)
OKLCH	oklch(55.12% 0.186 277)
XYZ	xyz(21.1887, 15.5215, 68.8835)
Luminance	0.1552 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B5FDB #DBD75B

analogous

#5B9FDB #5B5FDB #975BDB

triadic

#5B5FDB #DB5B5F #5FDB5B

tetradic

#5B5FDB #DB5B9F #DBD75B #5BDB97

square

#5B5FDB #DB5B9F #DBD75B #5BDB97

split-complementary

#5B5FDB #DB975B #9FDB5B

monochromatic

#22269A #2D32CC #5B5FDB #8D90E6 #BFC1F1

Accessibility & contrast

On white

5.12

#5B5FDB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.10

#5B5FDB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5B5FDB

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B5FDB	#FFFFFF	#000000	##FFFFFF
##5B5FDB	1.00	5.12	4.10	5.12
#FFFFFF	5.12	1.00	21.00	1.00
#000000	4.10	21.00	1.00	21.00
##FFFFFF	5.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0073DF

Deuteranopia (green-blind)

#0069D8

Tritanopia (blue-blind)

#007C94

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #5b5fdb;
/* rgb */ color: rgb(91, 95, 219);
/* oklch */ color: oklch(55.1% 0.186 277.0);

Tailwind

colors: {
  custom: {
    50: '#958ce7',
    500: '#5b5fdb',
    950: '#000000',
  },
}

SCSS

$custom: #5b5fdb;
$custom-light: #958ce7;
$custom-dark: #000000;

JSON

{
  "hex": "#5b5fdb",
  "rgb": {
    "r": 91,
    "g": 95,
    "b": 219
  },
  "hsl": {
    "h": 238.125,
    "s": 64,
    "l": 60.784
  },
  "oklch": {
    "l": 0.55119,
    "c": 0.18568,
    "h": 277
  },
  "luminance": 0.15523
}

Semantic roles & 50–950 ramp

primary

#5B5FDB

secondary

#E1E0B1

accent

#C61ACC

background

#F9F8FE

surface

#F2F0FD

border

#CCCBD5

text

#0E0C16

muted

#7E7D84

Preview Lab

Preview with #5B5FDB

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

Preview Lab → · Contrast checker → · Palette generator →