#5166D3#5166D3

#5166D3 is a mid, vivid blue. Relative luminance 0.160; OKLCH L 55.2% C 0.168 H 271.6°. Best body text is #FFFFFF at 5.01:1 contrast (WCAG AA passes).

Color values

HEX	#5166D3
RGB	rgb(81, 102, 211)
HSL	hsl(230, 60%, 57%)
HSV	hsv(230, 62%, 83%)
CMYK	cmyk(61.6%, 51.7%, 0%, 17.3%)
CIE-LAB	lab(46.91, 25.71, -58.75)
CIE-LCH	lch(46.91, 64.13, 293.64°)
OKLab	oklab(55.21% 0.0047 -0.1684)
OKLCH	oklch(55.21% 0.168 271.6)
XYZ	xyz(19.8987, 15.9536, 63.6461)
Luminance	0.1595 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5166D3 #D3BE51

analogous

#51A7D3 #5166D3 #7D51D3

triadic

#5166D3 #D35166 #66D351

tetradic

#5166D3 #D351A7 #D3BE51 #51D37D

square

#5166D3 #D351A7 #D3BE51 #51D37D

split-complementary

#5166D3 #D37D51 #A7D351

monochromatic

#223387 #2F45B8 #5166D3 #8291DF #B3BCEC

Accessibility & contrast

On white

5.01

#5166D3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.19

#5166D3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5166D3

5.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5166D3	#FFFFFF	#000000	##FFFFFF
##5166D3	1.00	5.01	4.19	5.01
#FFFFFF	5.01	1.00	21.00	1.00
#000000	4.19	21.00	1.00	21.00
##FFFFFF	5.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2575D7

Deuteranopia (green-blind)

#006AD1

Tritanopia (blue-blind)

#007F93

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #5166d3;
/* rgb */ color: rgb(81, 102, 211);
/* oklch */ color: oklch(55.2% 0.168 271.6);

Tailwind

colors: {
  custom: {
    50: '#8e91e1',
    500: '#5166d3',
    950: '#000000',
  },
}

SCSS

$custom: #5166d3;
$custom-light: #8e91e1;
$custom-dark: #000000;

JSON

{
  "hex": "#5166d3",
  "rgb": {
    "r": 81,
    "g": 102,
    "b": 211
  },
  "hsl": {
    "h": 230.308,
    "s": 59.633,
    "l": 57.255
  },
  "oklch": {
    "l": 0.5521,
    "c": 0.16848,
    "h": 271.6
  },
  "luminance": 0.15955
}

Semantic roles & 50–950 ramp

primary

#5166D3

secondary

#DAD2A6

accent

#C945E3

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0D0C15

muted

#7E7D83

Preview Lab

Preview with #5166D3

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

Preview Lab → · Contrast checker → · Palette generator →