#5B66DC#5B66DC

#5B66DC is a mid, vivid blue. Relative luminance 0.169; OKLCH L 56.5% C 0.178 H 275.1°. Best body text is #FFFFFF at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#5B66DC
RGB	rgb(91, 102, 220)
HSL	hsl(235, 65%, 61%)
HSV	hsv(235, 59%, 86%)
CMYK	cmyk(58.6%, 53.6%, 0%, 13.7%)
CIE-LAB	lab(48.12, 30.50, -61.89)
CIE-LCH	lch(48.12, 69.00, 296.24°)
OKLab	oklab(56.47% 0.0159 -0.1774)
OKLCH	oklch(56.47% 0.178 275.1)
XYZ	xyz(21.9798, 16.8925, 69.7986)
Luminance	0.1689 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B66DC #DCD15B

analogous

#5BA6DC #5B66DC #905BDC

triadic

#5B66DC #DC5B66 #66DC5B

tetradic

#5B66DC #DC5BA6 #DCD15B #5BDC90

square

#5B66DC #DC5BA6 #DCD15B #5BDC90

split-complementary

#5B66DC #DC905B #A6DC5B

monochromatic

#212C9B #2C3ACE #5B66DC #8D95E7 #C0C4F2

Accessibility & contrast

On white

4.80

#5B66DC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.38

#5B66DC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5B66DC

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B66DC	#FFFFFF	#000000	##FFFFFF
##5B66DC	1.00	4.80	4.38	4.80
#FFFFFF	4.80	1.00	21.00	1.00
#000000	4.38	21.00	1.00	21.00
##FFFFFF	4.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1878E0

Deuteranopia (green-blind)

#006DDA

Tritanopia (blue-blind)

#008197

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #5b66dc;
/* rgb */ color: rgb(91, 102, 220);
/* oklch */ color: oklch(56.5% 0.178 275.1);

Tailwind

colors: {
  custom: {
    50: '#9491e8',
    500: '#5b66dc',
    950: '#000000',
  },
}

SCSS

$custom: #5b66dc;
$custom-light: #9491e8;
$custom-dark: #000000;

JSON

{
  "hex": "#5b66dc",
  "rgb": {
    "r": 91,
    "g": 102,
    "b": 220
  },
  "hsl": {
    "h": 234.884,
    "s": 64.824,
    "l": 60.98
  },
  "oklch": {
    "l": 0.56472,
    "c": 0.17811,
    "h": 275.1
  },
  "luminance": 0.16894
}

Semantic roles & 50–950 ramp

primary

#5B66DC

secondary

#E2DEB1

accent

#BD19CD

background

#F9F8FE

surface

#F2F0FD

border

#CCCBD5

text

#0E0C16

muted

#7E7D84

Preview Lab

Preview with #5B66DC

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

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