#5366BB#5366BB

#5366BB is a mid, vivid blue. Relative luminance 0.149; OKLCH L 53.7% C 0.134 H 271.7°. Best body text is #FFFFFF at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#5366BB
RGB	rgb(83, 102, 187)
HSL	hsl(229, 43%, 53%)
HSV	hsv(229, 56%, 73%)
CMYK	cmyk(55.6%, 45.5%, 0%, 26.7%)
CIE-LAB	lab(45.54, 18.04, -47.14)
CIE-LCH	lch(45.54, 50.48, 290.94°)
OKLab	oklab(53.72% 0.004 -0.1342)
OKLCH	oklch(53.72% 0.134 271.7)
XYZ	xyz(17.2854, 14.9284, 48.9747)
Luminance	0.1493 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5366BB #BBA853

analogous

#539ABB #5366BB #7453BB

triadic

#5366BB #BB5366 #66BB53

tetradic

#5366BB #BB539A #BBA853 #53BB74

square

#5366BB #BB539A #BBA853 #53BB74

split-complementary

#5366BB #BB7453 #9ABB53

monochromatic

#2A366A #3B4C96 #5366BB #7F8DCC #ABB4DE

Accessibility & contrast

On white

5.27

#5366BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.99

#5366BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5366BB

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5366BB	#FFFFFF	#000000	##FFFFFF
##5366BB	1.00	5.27	3.99	5.27
#FFFFFF	5.27	1.00	21.00	1.00
#000000	3.99	21.00	1.00	21.00
##FFFFFF	5.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4071BE

Deuteranopia (green-blind)

#3368B9

Tritanopia (blue-blind)

#197987

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #5366bb;
/* rgb */ color: rgb(83, 102, 187);
/* oklch */ color: oklch(53.7% 0.134 271.7);

Tailwind

colors: {
  custom: {
    50: '#8b91d0',
    500: '#5366bb',
    950: '#000000',
  },
}

SCSS

$custom: #5366bb;
$custom-light: #8b91d0;
$custom-dark: #000000;

JSON

{
  "hex": "#5366bb",
  "rgb": {
    "r": 83,
    "g": 102,
    "b": 187
  },
  "hsl": {
    "h": 229.038,
    "s": 43.333,
    "l": 52.941
  },
  "oklch": {
    "l": 0.53715,
    "c": 0.13429,
    "h": 271.7
  },
  "luminance": 0.1493
}

Semantic roles & 50–950 ramp

primary

#5366BB

secondary

#CBC39E

accent

#BC55D3

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0D0C14

muted

#7D7D82

Preview Lab

Preview with #5366BB

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

Preview Lab → · Contrast checker → · Palette generator →