#5166DF#5166DF

#5166DF is a mid, vivid blue. Relative luminance 0.166; OKLCH L 56.1% C 0.185 H 271.7°. Best body text is #FFFFFF at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#5166DF
RGB	rgb(81, 102, 223)
HSL	hsl(231, 69%, 60%)
HSV	hsv(231, 64%, 87%)
CMYK	cmyk(63.7%, 54.3%, 0%, 12.5%)
CIE-LAB	lab(47.72, 29.79, -64.27)
CIE-LCH	lch(47.72, 70.83, 294.87°)
OKLab	oklab(56.08% 0.0055 -0.1846)
OKLCH	oklch(56.08% 0.185 271.7)
XYZ	xyz(21.4595, 16.5779, 71.8667)
Luminance	0.1658 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5166DF #DFCA51

analogous

#51ADDF #5166DF #8351DF

triadic

#5166DF #DF5166 #66DF51

tetradic

#5166DF #DF51AD #DFCA51 #51DF83

square

#5166DF #DF51AD #DFCA51 #51DF83

split-complementary

#5166DF #DF8351 #ADDF51

monochromatic

#1C2F99 #263ECD #5166DF #8593E9 #B8C1F2

Accessibility & contrast

On white

4.87

#5166DF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.32

#5166DF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5166DF

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5166DF	#FFFFFF	#000000	##FFFFFF
##5166DF	1.00	4.87	4.32	4.87
#FFFFFF	4.87	1.00	21.00	1.00
#000000	4.32	21.00	1.00	21.00
##FFFFFF	4.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0478E3

Deuteranopia (green-blind)

#006BDD

Tritanopia (blue-blind)

#008399

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #5166df;
/* rgb */ color: rgb(81, 102, 223);
/* oklch */ color: oklch(56.1% 0.185 271.7);

Tailwind

colors: {
  custom: {
    50: '#9091ea',
    500: '#5166df',
    950: '#000000',
  },
}

SCSS

$custom: #5166df;
$custom-light: #9091ea;
$custom-dark: #000000;

JSON

{
  "hex": "#5166df",
  "rgb": {
    "r": 81,
    "g": 102,
    "b": 223
  },
  "hsl": {
    "h": 231.127,
    "s": 68.932,
    "l": 59.608
  },
  "oklch": {
    "l": 0.56077,
    "c": 0.18471,
    "h": 271.7
  },
  "luminance": 0.1658
}

Semantic roles & 50–950 ramp

primary

#5166DF

secondary

#E1D9AA

accent

#D23CEC

background

#F9F8FE

surface

#F2F0FD

border

#CCCBD5

text

#0E0C16

muted

#7E7D84

Preview Lab

Preview with #5166DF

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

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