#5B63BB#5B63BB

#5B63BB is a mid, vivid blue. Relative luminance 0.147; OKLCH L 53.6% C 0.136 H 276.9°. Best body text is #FFFFFF at 5.32:1 contrast (WCAG AA passes).

Color values

HEX	#5B63BB
RGB	rgb(91, 99, 187)
HSL	hsl(235, 41%, 55%)
HSV	hsv(235, 51%, 73%)
CMYK	cmyk(51.3%, 47.1%, 0%, 26.7%)
CIE-LAB	lab(45.27, 21.67, -47.54)
CIE-LCH	lch(45.27, 52.25, 294.51°)
OKLab	oklab(53.65% 0.0163 -0.1352)
OKLCH	oklch(53.65% 0.136 276.9)
XYZ	xyz(17.7431, 14.7346, 48.9132)
Luminance	0.1474 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B63BB #BBB35B

analogous

#5B93BB #5B63BB #835BBB

triadic

#5B63BB #BB5B63 #63BB5B

tetradic

#5B63BB #BB5B93 #BBB35B #5BBB83

square

#5B63BB #BB5B93 #BBB35B #5BBB83

split-complementary

#5B63BB #BB835B #93BB5B

monochromatic

#2E336E #404799 #5B63BB #868CCD #B2B5DF

Accessibility & contrast

On white

5.32

#5B63BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.95

#5B63BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5B63BB

5.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B63BB	#FFFFFF	#000000	##FFFFFF
##5B63BB	1.00	5.32	3.95	5.32
#FFFFFF	5.32	1.00	21.00	1.00
#000000	3.95	21.00	1.00	21.00
##FFFFFF	5.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C6FBE

Deuteranopia (green-blind)

#3367B9

Tritanopia (blue-blind)

#337686

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #5b63bb;
/* rgb */ color: rgb(91, 99, 187);
/* oklch */ color: oklch(53.6% 0.136 276.9);

Tailwind

colors: {
  custom: {
    50: '#908fd0',
    500: '#5b63bb',
    950: '#000000',
  },
}

SCSS

$custom: #5b63bb;
$custom-light: #908fd0;
$custom-dark: #000000;

JSON

{
  "hex": "#5b63bb",
  "rgb": {
    "r": 91,
    "g": 99,
    "b": 187
  },
  "hsl": {
    "h": 235,
    "s": 41.379,
    "l": 54.51
  },
  "oklch": {
    "l": 0.5365,
    "c": 0.13621,
    "h": 276.9
  },
  "luminance": 0.14736
}

Semantic roles & 50–950 ramp

primary

#5B63BB

secondary

#CDCAA5

accent

#C757D1

background

#F9F8FC

surface

#F1F0F9

border

#CBCBD2

text

#0D0C14

muted

#7E7D82

Preview Lab

Preview with #5B63BB

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

Preview Lab → · Contrast checker → · Palette generator →