#5166CE#5166CE

#5166CE is a mid, vivid blue. Relative luminance 0.157; OKLCH L 54.9% C 0.162 H 271.5°. Best body text is #FFFFFF at 5.07:1 contrast (WCAG AA passes).

Color values

HEX	#5166CE
RGB	rgb(81, 102, 206)
HSL	hsl(230, 56%, 56%)
HSV	hsv(230, 61%, 81%)
CMYK	cmyk(60.7%, 50.5%, 0%, 19.2%)
CIE-LAB	lab(46.59, 24.02, -56.42)
CIE-LCH	lch(46.59, 61.32, 293.06°)
OKLab	oklab(54.86% 0.0043 -0.1615)
OKLCH	oklch(54.86% 0.162 271.5)
XYZ	xyz(19.2816, 15.7067, 60.3962)
Luminance	0.1571 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5166CE #CEB951

analogous

#51A5CE #5166CE #7B51CE

triadic

#5166CE #CE5166 #66CE51

tetradic

#5166CE #CE51A5 #CEB951 #51CE7B

square

#5166CE #CE51A5 #CEB951 #51CE7B

split-complementary

#5166CE #CE7B51 #A5CE51

monochromatic

#243480 #3247B0 #5166CE #8190DB #B1BAE9

Accessibility & contrast

On white

5.07

#5166CE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.14

#5166CE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5166CE

5.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5166CE	#FFFFFF	#000000	##FFFFFF
##5166CE	1.00	5.07	4.14	5.07
#FFFFFF	5.07	1.00	21.00	1.00
#000000	4.14	21.00	1.00	21.00
##FFFFFF	5.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D74D2

Deuteranopia (green-blind)

#0D69CC

Tritanopia (blue-blind)

#007E90

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #5166ce;
/* rgb */ color: rgb(81, 102, 206);
/* oklch */ color: oklch(54.9% 0.162 271.5);

Tailwind

colors: {
  custom: {
    50: '#8d91de',
    500: '#5166ce',
    950: '#000000',
  },
}

SCSS

$custom: #5166ce;
$custom-light: #8d91de;
$custom-dark: #000000;

JSON

{
  "hex": "#5166ce",
  "rgb": {
    "r": 81,
    "g": 102,
    "b": 206
  },
  "hsl": {
    "h": 229.92,
    "s": 56.054,
    "l": 56.275
  },
  "oklch": {
    "l": 0.54859,
    "c": 0.16161,
    "h": 271.5
  },
  "luminance": 0.15708
}

Semantic roles & 50–950 ramp

primary

#5166CE

secondary

#D7CEA4

accent

#C648DF

background

#F9F8FD

surface

#F1F0FB

border

#CBCBD4

text

#0D0C15

muted

#7E7D83

Preview Lab

Preview with #5166CE

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

Preview Lab → · Contrast checker → · Palette generator →