#516CD1#516CD1

#516CD1 is a mid, vivid blue. Relative luminance 0.171; OKLCH L 56.3% C 0.158 H 269.5°. Best body text is #FFFFFF at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#516CD1
RGB	rgb(81, 108, 209)
HSL	hsl(227, 58%, 57%)
HSV	hsv(227, 61%, 82%)
CMYK	cmyk(61.2%, 48.3%, 0%, 18%)
CIE-LAB	lab(48.36, 21.29, -55.29)
CIE-LCH	lch(48.36, 59.25, 291.06°)
OKLab	oklab(56.26% -0.0014 -0.1582)
OKLCH	oklch(56.26% 0.158 269.5)
XYZ	xyz(20.2606, 17.0762, 62.5376)
Luminance	0.1708 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#516CD1 #D1B651

analogous

#51ACD1 #516CD1 #7651D1

triadic

#516CD1 #D1516C #6CD151

tetradic

#516CD1 #D151AC #D1B651 #51D176

square

#516CD1 #D151AC #D1B651 #51D176

split-complementary

#516CD1 #D17651 #ACD151

monochromatic

#233885 #304CB5 #516CD1 #8195DE #B2BEEB

Accessibility & contrast

On white

4.76

#516CD1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.42

#516CD1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #516CD1

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##516CD1	#FFFFFF	#000000	##FFFFFF
##516CD1	1.00	4.76	4.42	4.76
#FFFFFF	4.76	1.00	21.00	1.00
#000000	4.42	21.00	1.00	21.00
##FFFFFF	4.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3879D5

Deuteranopia (green-blind)

#1F6DCF

Tritanopia (blue-blind)

#008394

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #516cd1;
/* rgb */ color: rgb(81, 108, 209);
/* oklch */ color: oklch(56.3% 0.158 269.5);

Tailwind

colors: {
  custom: {
    50: '#8d95e0',
    500: '#516cd1',
    950: '#000000',
  },
}

SCSS

$custom: #516cd1;
$custom-light: #8d95e0;
$custom-dark: #000000;

JSON

{
  "hex": "#516cd1",
  "rgb": {
    "r": 81,
    "g": 108,
    "b": 209
  },
  "hsl": {
    "h": 227.344,
    "s": 58.182,
    "l": 56.863
  },
  "oklch": {
    "l": 0.56261,
    "c": 0.15816,
    "h": 269.5
  },
  "luminance": 0.17078
}

Semantic roles & 50–950 ramp

primary

#516CD1

secondary

#D9CEA5

accent

#C146E1

background

#F9F9FD

surface

#F1F1FB

border

#CBCBD4

text

#0D0D15

muted

#7E7E83

Preview Lab

Preview with #516CD1

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

Preview Lab → · Contrast checker → · Palette generator →