#5B5BF8#5B5BF8

#5B5BF8 is a mid, highly saturated blue. Relative luminance 0.165; OKLCH L 56.7% C 0.228 H 276.3°. Best body text is #FFFFFF at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#5B5BF8
RGB	rgb(91, 91, 248)
HSL	hsl(240, 92%, 66%)
HSV	hsv(240, 63%, 97%)
CMYK	cmyk(63.3%, 63.3%, 0%, 2.7%)
CIE-LAB	lab(47.60, 46.19, -78.49)
CIE-LCH	lch(47.60, 91.08, 300.48°)
OKLab	oklab(56.73% 0.0251 -0.2263)
OKLCH	oklch(56.73% 0.228 276.3)
XYZ	xyz(24.9932, 16.4815, 90.6529)
Luminance	0.1648 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B5BF8 #F8F85B

analogous

#5BAAF8 #5B5BF8 #AA5BF8

triadic

#5B5BF8 #F85B5B #5BF85B

tetradic

#5B5BF8 #F85BAA #F8F85B #5BF8AA

square

#5B5BF8 #F85BAA #F8F85B #5BF8AA

split-complementary

#5B5BF8 #F8AA5B #AAF85B

monochromatic

#0909D0 #2020F5 #5B5BF8 #9696FB #D0D0FD

Accessibility & contrast

On white

4.89

#5B5BF8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.30

#5B5BF8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5B5BF8

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B5BF8	#FFFFFF	#000000	##FFFFFF
##5B5BF8	1.00	4.89	4.30	4.89
#FFFFFF	4.89	1.00	21.00	1.00
#000000	4.30	21.00	1.00	21.00
##FFFFFF	4.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0078FD

Deuteranopia (green-blind)

#006AF5

Tritanopia (blue-blind)

#0083A1

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #5b5bf8;
/* rgb */ color: rgb(91, 91, 248);
/* oklch */ color: oklch(56.7% 0.228 276.3);

Tailwind

colors: {
  custom: {
    50: '#9a8afc',
    500: '#5b5bf8',
    950: '#000000',
  },
}

SCSS

$custom: #5b5bf8;
$custom-light: #9a8afc;
$custom-dark: #000000;

JSON

{
  "hex": "#5b5bf8",
  "rgb": {
    "r": 91,
    "g": 91,
    "b": 248
  },
  "hsl": {
    "h": 240,
    "s": 91.813,
    "l": 66.471
  },
  "oklch": {
    "l": 0.56729,
    "c": 0.22768,
    "h": 276.3
  },
  "luminance": 0.16484
}

Semantic roles & 50–950 ramp

primary

#5B5BF8

secondary

#F1F1BE

accent

#E600E5

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#0F0C18

muted

#7F7D86

Preview Lab

Preview with #5B5BF8

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

Preview Lab → · Contrast checker → · Palette generator →