#516FDB#516FDB

#516FDB is a mid, vivid blue. Relative luminance 0.182; OKLCH L 57.5% C 0.168 H 268.9°. Best body text is #000000 at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#516FDB
RGB	rgb(81, 111, 219)
HSL	hsl(227, 66%, 59%)
HSV	hsv(227, 63%, 86%)
CMYK	cmyk(63%, 49.3%, 0%, 14.1%)
CIE-LAB	lab(49.77, 22.83, -58.69)
CIE-LCH	lch(49.77, 62.97, 291.25°)
OKLab	oklab(57.54% -0.0031 -0.1681)
OKLCH	oklch(57.54% 0.168 268.9)
XYZ	xyz(21.8596, 18.2308, 69.3710)
Luminance	0.1823 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#516FDB #DBBD51

analogous

#51B4DB #516FDB #7851DB

triadic

#516FDB #DB516F #6FDB51

tetradic

#516FDB #DB51B4 #DBBD51 #51DB78

square

#516FDB #DB51B4 #DBBD51 #51DB78

split-complementary

#516FDB #DB7851 #B4DB51

monochromatic

#1E3893 #294BC6 #516FDB #8499E5 #B6C3F0

Accessibility & contrast

On white

4.52

#516FDB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.65

#516FDB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #516FDB

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##516FDB	#FFFFFF	#000000	##000000
##516FDB	1.00	4.52	4.65	4.65
#FFFFFF	4.52	1.00	21.00	21.00
#000000	4.65	21.00	1.00	1.00
##000000	4.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#347DDF

Deuteranopia (green-blind)

#1170D9

Tritanopia (blue-blind)

#00889B

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #516fdb;
/* rgb */ color: rgb(81, 111, 219);
/* oklch */ color: oklch(57.5% 0.168 268.9);

Tailwind

colors: {
  custom: {
    50: '#8f97e7',
    500: '#516fdb',
    950: '#000000',
  },
}

SCSS

$custom: #516fdb;
$custom-light: #8f97e7;
$custom-dark: #000000;

JSON

{
  "hex": "#516fdb",
  "rgb": {
    "r": 81,
    "g": 111,
    "b": 219
  },
  "hsl": {
    "h": 226.957,
    "s": 65.714,
    "l": 58.824
  },
  "oklch": {
    "l": 0.57541,
    "c": 0.16814,
    "h": 268.9
  },
  "luminance": 0.18233
}

Semantic roles & 50–950 ramp

primary

#516FDB

secondary

#DFD3A9

accent

#C43FE9

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0E0D16

muted

#7E7E84

Preview Lab

Preview with #516FDB

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

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