#5B66DF#5B66DF

#5B66DF is a mid, vivid blue. Relative luminance 0.171; OKLCH L 56.7% C 0.182 H 275.1°. Best body text is #FFFFFF at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#5B66DF
RGB	rgb(91, 102, 223)
HSL	hsl(235, 67%, 62%)
HSV	hsv(235, 59%, 87%)
CMYK	cmyk(59.2%, 54.3%, 0%, 12.5%)
CIE-LAB	lab(48.33, 31.49, -63.26)
CIE-LCH	lch(48.33, 70.66, 296.46°)
OKLab	oklab(56.69% 0.0161 -0.1814)
OKLCH	oklch(56.69% 0.182 275.1)
XYZ	xyz(22.3807, 17.0529, 71.9099)
Luminance	0.1706 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B66DF #DFD45B

analogous

#5BA8DF #5B66DF #925BDF

triadic

#5B66DF #DF5B66 #66DF5B

tetradic

#5B66DF #DF5BA8 #DFD45B #5BDF92

square

#5B66DF #DF5BA8 #DFD45B #5BDF92

split-complementary

#5B66DF #DF925B #A8DF5B

monochromatic

#1F2AA0 #2937D4 #5B66DF #8E96E9 #C1C6F3

Accessibility & contrast

On white

4.76

#5B66DF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.41

#5B66DF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5B66DF

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B66DF	#FFFFFF	#000000	##FFFFFF
##5B66DF	1.00	4.76	4.41	4.76
#FFFFFF	4.76	1.00	21.00	1.00
#000000	4.41	21.00	1.00	21.00
##FFFFFF	4.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F79E3

Deuteranopia (green-blind)

#006DDD

Tritanopia (blue-blind)

#008299

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #5b66df;
/* rgb */ color: rgb(91, 102, 223);
/* oklch */ color: oklch(56.7% 0.182 275.1);

Tailwind

colors: {
  custom: {
    50: '#9591ea',
    500: '#5b66df',
    950: '#000000',
  },
}

SCSS

$custom: #5b66df;
$custom-light: #9591ea;
$custom-dark: #000000;

JSON

{
  "hex": "#5b66df",
  "rgb": {
    "r": 91,
    "g": 102,
    "b": 223
  },
  "hsl": {
    "h": 235,
    "s": 67.347,
    "l": 61.569
  },
  "oklch": {
    "l": 0.56687,
    "c": 0.18215,
    "h": 275.1
  },
  "luminance": 0.17055
}

Semantic roles & 50–950 ramp

primary

#5B66DF

secondary

#E3DFB2

accent

#C016CF

background

#F9F8FE

surface

#F2F0FD

border

#CCCBD5

text

#0E0C16

muted

#7E7D84

Preview Lab

Preview with #5B66DF

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

Preview Lab → · Contrast checker → · Palette generator →