#5B66CE#5B66CE

#5B66CE is a mid, vivid blue. Relative luminance 0.162; OKLCH L 55.5% C 0.159 H 275.4°. Best body text is #FFFFFF at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#5B66CE
RGB	rgb(91, 102, 206)
HSL	hsl(234, 54%, 58%)
HSV	hsv(234, 56%, 81%)
CMYK	cmyk(55.8%, 50.5%, 0%, 19.2%)
CIE-LAB	lab(47.21, 25.93, -55.38)
CIE-LCH	lch(47.21, 61.15, 295.09°)
OKLab	oklab(55.49% 0.015 -0.1582)
OKLCH	oklch(55.49% 0.159 275.4)
XYZ	xyz(20.2027, 16.1817, 60.4393)
Luminance	0.1618 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B66CE #CEC35B

analogous

#5B9FCE #5B66CE #895BCE

triadic

#5B66CE #CE5B66 #66CE5B

tetradic

#5B66CE #CE5B9F #CEC35B #5BCE89

square

#5B66CE #CE5B9F #CEC35B #5BCE89

split-complementary

#5B66CE #CE895B #9FCE5B

monochromatic

#283186 #3642B6 #5B66CE #8A92DC #B9BEEA

Accessibility & contrast

On white

4.96

#5B66CE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.24

#5B66CE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5B66CE

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B66CE	#FFFFFF	#000000	##FFFFFF
##5B66CE	1.00	4.96	4.24	4.96
#FFFFFF	4.96	1.00	21.00	1.00
#000000	4.24	21.00	1.00	21.00
##FFFFFF	4.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3075D2

Deuteranopia (green-blind)

#1D6BCC

Tritanopia (blue-blind)

#1B7D90

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #5b66ce;
/* rgb */ color: rgb(91, 102, 206);
/* oklch */ color: oklch(55.5% 0.159 275.4);

Tailwind

colors: {
  custom: {
    50: '#9291de',
    500: '#5b66ce',
    950: '#000000',
  },
}

SCSS

$custom: #5b66ce;
$custom-light: #9291de;
$custom-dark: #000000;

JSON

{
  "hex": "#5b66ce",
  "rgb": {
    "r": 91,
    "g": 102,
    "b": 206
  },
  "hsl": {
    "h": 234.261,
    "s": 53.991,
    "l": 58.235
  },
  "oklch": {
    "l": 0.55494,
    "c": 0.15896,
    "h": 275.4
  },
  "luminance": 0.16183
}

Semantic roles & 50–950 ramp

primary

#5B66CE

secondary

#D9D5AB

accent

#CF4ADD

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0C15

muted

#7E7D83

Preview Lab

Preview with #5B66CE

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

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