#516FBC#516FBC

#516FBC is a mid, vivid blue. Relative luminance 0.167; OKLCH L 55.5% C 0.125 H 266.4°. Best body text is #FFFFFF at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#516FBC
RGB	rgb(81, 111, 188)
HSL	hsl(223, 44%, 53%)
HSV	hsv(223, 57%, 74%)
CMYK	cmyk(56.9%, 41%, 0%, 26.3%)
CIE-LAB	lab(47.94, 12.33, -43.90)
CIE-LCH	lch(47.94, 45.60, 285.69°)
OKLab	oklab(55.55% -0.0079 -0.1247)
OKLCH	oklch(55.55% 0.125 266.4)
XYZ	xyz(18.1518, 16.7476, 49.8433)
Luminance	0.1675 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#516FBC #BC9E51

analogous

#51A4BC #516FBC #6951BC

triadic

#516FBC #BC516F #6FBC51

tetradic

#516FBC #BC51A4 #BC9E51 #51BC69

square

#516FBC #BC51A4 #BC9E51 #51BC69

split-complementary

#516FBC #BC6951 #A4BC51

monochromatic

#293B6A #3A5496 #516FBC #7D94CD #A9B8DE

Accessibility & contrast

On white

4.83

#516FBC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.35

#516FBC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #516FBC

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##516FBC	#FFFFFF	#000000	##FFFFFF
##516FBC	1.00	4.83	4.35	4.83
#FFFFFF	4.83	1.00	21.00	1.00
#000000	4.35	21.00	1.00	21.00
##FFFFFF	4.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E77BF

Deuteranopia (green-blind)

#416DBA

Tritanopia (blue-blind)

#04808C

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #516fbc;
/* rgb */ color: rgb(81, 111, 188);
/* oklch */ color: oklch(55.5% 0.125 266.4);

Tailwind

colors: {
  custom: {
    50: '#8a98d0',
    500: '#516fbc',
    950: '#000000',
  },
}

SCSS

$custom: #516fbc;
$custom-light: #8a98d0;
$custom-dark: #000000;

JSON

{
  "hex": "#516fbc",
  "rgb": {
    "r": 81,
    "g": 111,
    "b": 188
  },
  "hsl": {
    "h": 223.178,
    "s": 44.398,
    "l": 52.745
  },
  "oklch": {
    "l": 0.55546,
    "c": 0.12491,
    "h": 266.4
  },
  "luminance": 0.16749
}

Semantic roles & 50–950 ramp

primary

#516FBC

secondary

#CCBF9D

accent

#B054D4

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0D14

muted

#7D7E82

Preview Lab

Preview with #516FBC

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

Preview Lab → · Contrast checker → · Palette generator →