#5166BE#5166BE

#5166BE is a mid, vivid blue. Relative luminance 0.150; OKLCH L 53.8% C 0.139 H 271.0°. Best body text is #FFFFFF at 5.26:1 contrast (WCAG AA passes).

Color values

HEX	#5166BE
RGB	rgb(81, 102, 190)
HSL	hsl(228, 46%, 53%)
HSV	hsv(228, 57%, 75%)
CMYK	cmyk(57.4%, 46.3%, 0%, 25.5%)
CIE-LAB	lab(45.59, 18.62, -48.80)
CIE-LCH	lch(45.59, 52.23, 290.89°)
OKLab	oklab(53.78% 0.0024 -0.1391)
OKLCH	oklch(53.78% 0.139 271)
XYZ	xyz(17.4359, 14.9685, 50.6756)
Luminance	0.1497 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5166BE #BEA951

analogous

#519DBE #5166BE #7251BE

triadic

#5166BE #BE5166 #66BE51

tetradic

#5166BE #BE519D #BEA951 #51BE72

square

#5166BE #BE519D #BEA951 #51BE72

split-complementary

#5166BE #BE7251 #9DBE51

monochromatic

#28356C #394B99 #5166BE #7E8DCF #AAB4DF

Accessibility & contrast

On white

5.26

#5166BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.99

#5166BE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5166BE

5.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5166BE	#FFFFFF	#000000	##FFFFFF
##5166BE	1.00	5.26	3.99	5.26
#FFFFFF	5.26	1.00	21.00	1.00
#000000	3.99	21.00	1.00	21.00
##FFFFFF	5.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D71C1

Deuteranopia (green-blind)

#2E67BC

Tritanopia (blue-blind)

#037A89

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #5166be;
/* rgb */ color: rgb(81, 102, 190);
/* oklch */ color: oklch(53.8% 0.139 271.0);

Tailwind

colors: {
  custom: {
    50: '#8a91d2',
    500: '#5166be',
    950: '#000000',
  },
}

SCSS

$custom: #5166be;
$custom-light: #8a91d2;
$custom-dark: #000000;

JSON

{
  "hex": "#5166be",
  "rgb": {
    "r": 81,
    "g": 102,
    "b": 190
  },
  "hsl": {
    "h": 228.44,
    "s": 45.607,
    "l": 53.137
  },
  "oklch": {
    "l": 0.53782,
    "c": 0.13916,
    "h": 271
  },
  "luminance": 0.1497
}

Semantic roles & 50–950 ramp

primary

#5166BE

secondary

#CDC49E

accent

#BC53D5

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0D0C14

muted

#7D7D82

Preview Lab

Preview with #5166BE

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

Preview Lab → · Contrast checker → · Palette generator →