#516BD1#516BD1

#516BD1 is a mid, vivid blue. Relative luminance 0.169; OKLCH L 56.1% C 0.159 H 269.9°. Best body text is #FFFFFF at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#516BD1
RGB	rgb(81, 107, 209)
HSL	hsl(228, 58%, 57%)
HSV	hsv(228, 61%, 82%)
CMYK	cmyk(61.2%, 48.8%, 0%, 18%)
CIE-LAB	lab(48.09, 21.91, -55.71)
CIE-LCH	lch(48.09, 59.87, 291.47°)
OKLab	oklab(56.06% -0.0004 -0.1594)
OKLCH	oklch(56.06% 0.159 269.9)
XYZ	xyz(20.1558, 16.8665, 62.5026)
Luminance	0.1687 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#516BD1 #D1B751

analogous

#51ABD1 #516BD1 #7751D1

triadic

#516BD1 #D1516B #6BD151

tetradic

#516BD1 #D151AB #D1B751 #51D177

square

#516BD1 #D151AB #D1B751 #51D177

split-complementary

#516BD1 #D17751 #ABD151

monochromatic

#233785 #304BB5 #516BD1 #8194DE #B2BDEB

Accessibility & contrast

On white

4.80

#516BD1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.37

#516BD1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #516BD1

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##516BD1	#FFFFFF	#000000	##FFFFFF
##516BD1	1.00	4.80	4.37	4.80
#FFFFFF	4.80	1.00	21.00	1.00
#000000	4.37	21.00	1.00	21.00
##FFFFFF	4.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3678D5

Deuteranopia (green-blind)

#1C6DCF

Tritanopia (blue-blind)

#008294

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #516bd1;
/* rgb */ color: rgb(81, 107, 209);
/* oklch */ color: oklch(56.1% 0.159 269.9);

Tailwind

colors: {
  custom: {
    50: '#8d95e0',
    500: '#516bd1',
    950: '#000000',
  },
}

SCSS

$custom: #516bd1;
$custom-light: #8d95e0;
$custom-dark: #000000;

JSON

{
  "hex": "#516bd1",
  "rgb": {
    "r": 81,
    "g": 107,
    "b": 209
  },
  "hsl": {
    "h": 227.813,
    "s": 58.182,
    "l": 56.863
  },
  "oklch": {
    "l": 0.5606,
    "c": 0.15941,
    "h": 269.9
  },
  "luminance": 0.16868
}

Semantic roles & 50–950 ramp

primary

#516BD1

secondary

#D9CEA5

accent

#C246E1

background

#F9F9FD

surface

#F1F1FB

border

#CBCBD4

text

#0D0D15

muted

#7E7E83

Preview Lab

Preview with #516BD1

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

Preview Lab → · Contrast checker → · Palette generator →