#5B66EE#5B66EE

#5B66EE is a mid, highly saturated blue. Relative luminance 0.179; OKLCH L 57.8% C 0.202 H 274.7°. Best body text is #FFFFFF at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#5B66EE
RGB	rgb(91, 102, 238)
HSL	hsl(236, 81%, 65%)
HSV	hsv(236, 62%, 93%)
CMYK	cmyk(61.8%, 57.1%, 0%, 6.7%)
CIE-LAB	lab(49.37, 36.40, -70.02)
CIE-LCH	lch(49.37, 78.91, 297.47°)
OKLab	oklab(57.8% 0.0164 -0.2013)
OKLCH	oklch(57.8% 0.202 274.7)
XYZ	xyz(24.4933, 17.8979, 83.0362)
Luminance	0.1790 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B66EE #EEE35B

analogous

#5BB0EE #5B66EE #9A5BEE

triadic

#5B66EE #EE5B66 #66EE5B

tetradic

#5B66EE #EE5BB0 #EEE35B #5BEE9A

square

#5B66EE #EE5BB0 #EEE35B #5BEE9A

split-complementary

#5B66EE #EE9A5B #B0EE5B

monochromatic

#1320BB #2432E8 #5B66EE #929AF4 #CACDF9

Accessibility & contrast

On white

4.59

#5B66EE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.58

#5B66EE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #5B66EE

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B66EE	#FFFFFF	#000000	##FFFFFF
##5B66EE	1.00	4.59	4.58	4.59
#FFFFFF	4.59	1.00	21.00	1.00
#000000	4.58	21.00	1.00	21.00
##FFFFFF	4.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#007CF3

Deuteranopia (green-blind)

#006FEB

Tritanopia (blue-blind)

#0087A0

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #5b66ee;
/* rgb */ color: rgb(91, 102, 238);
/* oklch */ color: oklch(57.8% 0.202 274.7);

Tailwind

colors: {
  custom: {
    50: '#9791f4',
    500: '#5b66ee',
    950: '#000000',
  },
}

SCSS

$custom: #5b66ee;
$custom-light: #9791f4;
$custom-dark: #000000;

JSON

{
  "hex": "#5b66ee",
  "rgb": {
    "r": 91,
    "g": 102,
    "b": 238
  },
  "hsl": {
    "h": 235.51,
    "s": 81.215,
    "l": 64.51
  },
  "oklch": {
    "l": 0.57797,
    "c": 0.20197,
    "h": 274.7
  },
  "luminance": 0.179
}

Semantic roles & 50–950 ramp

primary

#5B66EE

secondary

#ECE8B9

accent

#CE08DE

background

#FAF8FF

surface

#F3F0FE

border

#CDCBD6

text

#0F0C17

muted

#7F7D85

Preview Lab

Preview with #5B66EE

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

Preview Lab → · Contrast checker → · Palette generator →