#516DD4#516DD4

#516DD4 is a mid, vivid blue. Relative luminance 0.174; OKLCH L 56.7% C 0.161 H 269.3°. Best body text is #FFFFFF at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#516DD4
RGB	rgb(81, 109, 212)
HSL	hsl(227, 60%, 57%)
HSV	hsv(227, 62%, 83%)
CMYK	cmyk(61.8%, 48.6%, 0%, 16.9%)
CIE-LAB	lab(48.81, 21.68, -56.27)
CIE-LCH	lch(48.81, 60.31, 291.07°)
OKLab	oklab(56.67% -0.002 -0.161)
OKLCH	oklch(56.67% 0.161 269.3)
XYZ	xyz(20.7416, 17.4383, 64.5475)
Luminance	0.1744 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#516DD4 #D4B851

analogous

#51AED4 #516DD4 #7751D4

triadic

#516DD4 #D4516D #6DD451

tetradic

#516DD4 #D451AE #D4B851 #51D477

square

#516DD4 #D451AE #D4B851 #51D477

split-complementary

#516DD4 #D47751 #AED451

monochromatic

#223889 #2E4CBA #516DD4 #8296E0 #B3BFEC

Accessibility & contrast

On white

4.68

#516DD4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.49

#516DD4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #516DD4

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##516DD4	#FFFFFF	#000000	##FFFFFF
##516DD4	1.00	4.68	4.49	4.68
#FFFFFF	4.68	1.00	21.00	1.00
#000000	4.49	21.00	1.00	21.00
##FFFFFF	4.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#377AD8

Deuteranopia (green-blind)

#1C6ED2

Tritanopia (blue-blind)

#008596

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #516dd4;
/* rgb */ color: rgb(81, 109, 212);
/* oklch */ color: oklch(56.7% 0.161 269.3);

Tailwind

colors: {
  custom: {
    50: '#8e96e2',
    500: '#516dd4',
    950: '#000000',
  },
}

SCSS

$custom: #516dd4;
$custom-light: #8e96e2;
$custom-dark: #000000;

JSON

{
  "hex": "#516dd4",
  "rgb": {
    "r": 81,
    "g": 109,
    "b": 212
  },
  "hsl": {
    "h": 227.176,
    "s": 60.369,
    "l": 57.451
  },
  "oklch": {
    "l": 0.56665,
    "c": 0.16104,
    "h": 269.3
  },
  "luminance": 0.1744
}

Semantic roles & 50–950 ramp

primary

#516DD4

secondary

#DBD0A6

accent

#C144E4

background

#F9F9FD

surface

#F2F1FB

border

#CCCBD4

text

#0D0D15

muted

#7E7E83

Preview Lab

Preview with #516DD4

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

Preview Lab → · Contrast checker → · Palette generator →