#5166D2#5166D2

#5166D2 is a mid, vivid blue. Relative luminance 0.159; OKLCH L 55.1% C 0.167 H 271.6°. Best body text is #FFFFFF at 5.02:1 contrast (WCAG AA passes).

Color values

HEX	#5166D2
RGB	rgb(81, 102, 210)
HSL	hsl(230, 59%, 57%)
HSV	hsv(230, 61%, 82%)
CMYK	cmyk(61.4%, 51.4%, 0%, 17.6%)
CIE-LAB	lab(46.85, 25.37, -58.29)
CIE-LCH	lch(46.85, 63.57, 293.52°)
OKLab	oklab(55.14% 0.0046 -0.167)
OKLCH	oklch(55.14% 0.167 271.6)
XYZ	xyz(19.7737, 15.9036, 62.9879)
Luminance	0.1590 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5166D2 #D2BD51

analogous

#51A6D2 #5166D2 #7D51D2

triadic

#5166D2 #D25166 #66D251

tetradic

#5166D2 #D251A6 #D2BD51 #51D27D

square

#5166D2 #D251A6 #D2BD51 #51D27D

split-complementary

#5166D2 #D27D51 #A6D251

monochromatic

#233386 #2F45B7 #5166D2 #8291DF #B2BCEB

Accessibility & contrast

On white

5.02

#5166D2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.18

#5166D2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5166D2

5.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5166D2	#FFFFFF	#000000	##FFFFFF
##5166D2	1.00	5.02	4.18	5.02
#FFFFFF	5.02	1.00	21.00	1.00
#000000	4.18	21.00	1.00	21.00
##FFFFFF	5.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2775D6

Deuteranopia (green-blind)

#006AD0

Tritanopia (blue-blind)

#007F92

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #5166d2;
/* rgb */ color: rgb(81, 102, 210);
/* oklch */ color: oklch(55.1% 0.167 271.6);

Tailwind

colors: {
  custom: {
    50: '#8e91e0',
    500: '#5166d2',
    950: '#000000',
  },
}

SCSS

$custom: #5166d2;
$custom-light: #8e91e0;
$custom-dark: #000000;

JSON

{
  "hex": "#5166d2",
  "rgb": {
    "r": 81,
    "g": 102,
    "b": 210
  },
  "hsl": {
    "h": 230.233,
    "s": 58.904,
    "l": 57.059
  },
  "oklch": {
    "l": 0.55139,
    "c": 0.1671,
    "h": 271.6
  },
  "luminance": 0.15905
}

Semantic roles & 50–950 ramp

primary

#5166D2

secondary

#DAD1A5

accent

#C946E2

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0D0C15

muted

#7E7D83

Preview Lab

Preview with #5166D2

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

Preview Lab → · Contrast checker → · Palette generator →