#516DD9#516DD9

#516DD9 is a mid, vivid blue. Relative luminance 0.177; OKLCH L 57.0% C 0.168 H 269.5°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#516DD9
RGB	rgb(81, 109, 217)
HSL	hsl(228, 64%, 58%)
HSV	hsv(228, 63%, 85%)
CMYK	cmyk(62.7%, 49.8%, 0%, 14.9%)
CIE-LAB	lab(49.12, 23.39, -58.61)
CIE-LCH	lch(49.12, 63.10, 291.76°)
OKLab	oklab(57.01% -0.0014 -0.1679)
OKLCH	oklch(57.01% 0.168 269.5)
XYZ	xyz(21.3821, 17.6945, 67.9208)
Luminance	0.1770 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#516DD9 #D9BD51

analogous

#51B1D9 #516DD9 #7951D9

triadic

#516DD9 #D9516D #6DD951

tetradic

#516DD9 #D951B1 #D9BD51 #51D979

square

#516DD9 #D951B1 #D9BD51 #51D979

split-complementary

#516DD9 #D97951 #B1D951

monochromatic

#1F3790 #2A4AC2 #516DD9 #8397E4 #B5C1EF

Accessibility & contrast

On white

4.63

#516DD9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#516DD9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #516DD9

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##516DD9	#FFFFFF	#000000	##FFFFFF
##516DD9	1.00	4.63	4.54	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.54	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#327BDD

Deuteranopia (green-blind)

#0C6FD7

Tritanopia (blue-blind)

#008699

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #516dd9;
/* rgb */ color: rgb(81, 109, 217);
/* oklch */ color: oklch(57.0% 0.168 269.5);

Tailwind

colors: {
  custom: {
    50: '#8e96e5',
    500: '#516dd9',
    950: '#000000',
  },
}

SCSS

$custom: #516dd9;
$custom-light: #8e96e5;
$custom-dark: #000000;

JSON

{
  "hex": "#516dd9",
  "rgb": {
    "r": 81,
    "g": 109,
    "b": 217
  },
  "hsl": {
    "h": 227.647,
    "s": 64.151,
    "l": 58.431
  },
  "oklch": {
    "l": 0.57006,
    "c": 0.1679,
    "h": 269.5
  },
  "luminance": 0.17696
}

Semantic roles & 50–950 ramp

primary

#516DD9

secondary

#DED3A8

accent

#C541E7

background

#F9F9FE

surface

#F2F1FC

border

#CCCBD5

text

#0D0D16

muted

#7E7E84

Preview Lab

Preview with #516DD9

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

Preview Lab → · Contrast checker → · Palette generator →