#5166E6#5166E6

#5166E6 is a mid, vivid blue. Relative luminance 0.170; OKLCH L 56.6% C 0.194 H 271.7°. Best body text is #FFFFFF at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#5166E6
RGB	rgb(81, 102, 230)
HSL	hsl(232, 75%, 61%)
HSV	hsv(232, 65%, 90%)
CMYK	cmyk(64.8%, 55.7%, 0%, 9.8%)
CIE-LAB	lab(48.21, 32.17, -67.43)
CIE-LCH	lch(48.21, 74.71, 295.50°)
OKLab	oklab(56.6% 0.0058 -0.1939)
OKLCH	oklch(56.6% 0.194 271.7)
XYZ	xyz(22.4228, 16.9632, 76.9401)
Luminance	0.1696 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5166E6 #E6D151

analogous

#51B0E6 #5166E6 #8651E6

triadic

#5166E6 #E65166 #66E651

tetradic

#5166E6 #E651B0 #E6D151 #51E686

square

#5166E6 #E651B0 #E6D151 #51E686

split-complementary

#5166E6 #E68651 #B0E651

monochromatic

#182CA5 #1F3ADA #5166E6 #8795EE #BCC4F5

Accessibility & contrast

On white

4.78

#5166E6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.39

#5166E6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5166E6

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5166E6	#FFFFFF	#000000	##FFFFFF
##5166E6	1.00	4.78	4.39	4.78
#FFFFFF	4.78	1.00	21.00	1.00
#000000	4.39	21.00	1.00	21.00
##FFFFFF	4.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0079EA

Deuteranopia (green-blind)

#006CE3

Tritanopia (blue-blind)

#00859C

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #5166e6;
/* rgb */ color: rgb(81, 102, 230);
/* oklch */ color: oklch(56.6% 0.194 271.7);

Tailwind

colors: {
  custom: {
    50: '#9191ef',
    500: '#5166e6',
    950: '#000000',
  },
}

SCSS

$custom: #5166e6;
$custom-light: #9191ef;
$custom-dark: #000000;

JSON

{
  "hex": "#5166e6",
  "rgb": {
    "r": 81,
    "g": 102,
    "b": 230
  },
  "hsl": {
    "h": 231.544,
    "s": 74.874,
    "l": 60.98
  },
  "oklch": {
    "l": 0.56599,
    "c": 0.19402,
    "h": 271.7
  },
  "luminance": 0.16965
}

Semantic roles & 50–950 ramp

primary

#5166E6

secondary

#E5DEAD

accent

#BB0ED7

background

#F9F8FE

surface

#F2F0FD

border

#CCCBD5

text

#0E0C16

muted

#7E7D84

Preview Lab

Preview with #5166E6

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

Preview Lab → · Contrast checker → · Palette generator →