#516FBB#516FBB

#516FBB is a mid, vivid blue. Relative luminance 0.167; OKLCH L 55.5% C 0.123 H 266.2°. Best body text is #FFFFFF at 4.84:1 contrast (WCAG AA passes).

Color values

HEX	#516FBB
RGB	rgb(81, 111, 187)
HSL	hsl(223, 44%, 53%)
HSV	hsv(223, 57%, 73%)
CMYK	cmyk(56.7%, 40.6%, 0%, 26.7%)
CIE-LAB	lab(47.89, 12.00, -43.41)
CIE-LCH	lch(47.89, 45.03, 285.45°)
OKLab	oklab(55.49% -0.0081 -0.1232)
OKLCH	oklch(55.49% 0.123 266.2)
XYZ	xyz(18.0444, 16.7047, 49.2775)
Luminance	0.1671 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#516FBB #BB9D51

analogous

#51A4BB #516FBB #6851BB

triadic

#516FBB #BB516F #6FBB51

tetradic

#516FBB #BB51A4 #BB9D51 #51BB68

square

#516FBB #BB51A4 #BB9D51 #51BB68

split-complementary

#516FBB #BB6851 #A4BB51

monochromatic

#293B69 #3A5495 #516FBB #7D93CC #A9B8DD

Accessibility & contrast

On white

4.84

#516FBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.34

#516FBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #516FBB

4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##516FBB	#FFFFFF	#000000	##FFFFFF
##516FBB	1.00	4.84	4.34	4.84
#FFFFFF	4.84	1.00	21.00	1.00
#000000	4.34	21.00	1.00	21.00
##FFFFFF	4.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F77BE

Deuteranopia (green-blind)

#426DB9

Tritanopia (blue-blind)

#07808C

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #516fbb;
/* rgb */ color: rgb(81, 111, 187);
/* oklch */ color: oklch(55.5% 0.123 266.2);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#516fbb",
  "rgb": {
    "r": 81,
    "g": 111,
    "b": 187
  },
  "hsl": {
    "h": 223.019,
    "s": 43.802,
    "l": 52.549
  },
  "oklch": {
    "l": 0.55486,
    "c": 0.12349,
    "h": 266.2
  },
  "luminance": 0.16706
}

Semantic roles & 50–950 ramp

primary

#516FBB

secondary

#CBBE9D

accent

#B054D4

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0D14

muted

#7D7E82

Preview Lab

Preview with #516FBB

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

Preview Lab → · Contrast checker → · Palette generator →