#5166F2#5166F2

#5166F2 is a mid, highly saturated blue. Relative luminance 0.177; OKLCH L 57.5% C 0.210 H 271.6°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#5166F2
RGB	rgb(81, 102, 242)
HSL	hsl(232, 86%, 63%)
HSV	hsv(232, 67%, 95%)
CMYK	cmyk(66.5%, 57.9%, 0%, 5.1%)
CIE-LAB	lab(49.08, 36.23, -72.75)
CIE-LCH	lch(49.08, 81.28, 296.47°)
OKLab	oklab(57.52% 0.006 -0.2096)
OKLCH	oklch(57.52% 0.21 271.6)
XYZ	xyz(24.1663, 17.6606, 86.1225)
Luminance	0.1766 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5166F2 #F2DD51

analogous

#51B6F2 #5166F2 #8C51F2

triadic

#5166F2 #F25166 #66F251

tetradic

#5166F2 #F251B6 #F2DD51 #51F28C

square

#5166F2 #F251B6 #F2DD51 #51F28C

split-complementary

#5166F2 #F28C51 #B6F251

monochromatic

#0E24BB #1834EE #5166F2 #8A98F6 #C3CAFB

Accessibility & contrast

On white

4.63

#5166F2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#5166F2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #5166F2

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5166F2	#FFFFFF	#000000	##FFFFFF
##5166F2	1.00	4.63	4.53	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#007CF7

Deuteranopia (green-blind)

#006EEF

Tritanopia (blue-blind)

#0089A2

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #5166f2;
/* rgb */ color: rgb(81, 102, 242);
/* oklch */ color: oklch(57.5% 0.210 271.6);

Tailwind

colors: {
  custom: {
    50: '#9391f7',
    500: '#5166f2',
    950: '#000000',
  },
}

SCSS

$custom: #5166f2;
$custom-light: #9391f7;
$custom-dark: #000000;

JSON

{
  "hex": "#5166f2",
  "rgb": {
    "r": 81,
    "g": 102,
    "b": 242
  },
  "hsl": {
    "h": 232.174,
    "s": 86.096,
    "l": 63.333
  },
  "oklch": {
    "l": 0.57519,
    "c": 0.20968,
    "h": 271.6
  },
  "luminance": 0.17663
}

Semantic roles & 50–950 ramp

primary

#5166F2

secondary

#ECE5B3

accent

#C503E3

background

#F9F8FF

surface

#F2F0FF

border

#CCCBD7

text

#0F0C17

muted

#7E7D85

Preview Lab

Preview with #5166F2

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

Preview Lab → · Contrast checker → · Palette generator →