#516CB1#516CB1

#516CB1 is a mid, moderate blue. Relative luminance 0.156; OKLCH L 54.2% C 0.113 H 266.5°. Best body text is #FFFFFF at 5.08:1 contrast (WCAG AA passes).

Color values

HEX	#516CB1
RGB	rgb(81, 108, 177)
HSL	hsl(223, 38%, 51%)
HSV	hsv(223, 54%, 69%)
CMYK	cmyk(54.2%, 39%, 0%, 30.6%)
CIE-LAB	lab(46.51, 10.55, -39.78)
CIE-LCH	lch(46.51, 41.16, 284.85°)
OKLab	oklab(54.25% -0.0068 -0.1126)
OKLCH	oklch(54.25% 0.113 266.5)
XYZ	xyz(16.6891, 15.6476, 43.7273)
Luminance	0.1565 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#516CB1 #B19651

analogous

#519CB1 #516CB1 #6651B1

triadic

#516CB1 #B1516C #6CB151

tetradic

#516CB1 #B1519C #B19651 #51B166

square

#516CB1 #B1519C #B19651 #51B166

split-complementary

#516CB1 #B16651 #9CB151

monochromatic

#2A385E #3D5288 #516CB1 #7B90C4 #A6B3D7

Accessibility & contrast

On white

5.08

#516CB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.13

#516CB1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #516CB1

5.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##516CB1	#FFFFFF	#000000	##FFFFFF
##516CB1	1.00	5.08	4.13	5.08
#FFFFFF	5.08	1.00	21.00	1.00
#000000	4.13	21.00	1.00	21.00
##FFFFFF	5.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5073B4

Deuteranopia (green-blind)

#456AB0

Tritanopia (blue-blind)

#1E7B86

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #516cb1;
/* rgb */ color: rgb(81, 108, 177);
/* oklch */ color: oklch(54.2% 0.113 266.5);

Tailwind

colors: {
  custom: {
    50: '#8895c8',
    500: '#516cb1',
    950: '#000000',
  },
}

SCSS

$custom: #516cb1;
$custom-light: #8895c8;
$custom-dark: #000000;

JSON

{
  "hex": "#516cb1",
  "rgb": {
    "r": 81,
    "g": 108,
    "b": 177
  },
  "hsl": {
    "h": 223.125,
    "s": 38.095,
    "l": 50.588
  },
  "oklch": {
    "l": 0.54248,
    "c": 0.11286,
    "h": 266.5
  },
  "luminance": 0.15649
}

Semantic roles & 50–950 ramp

primary

#516CB1

secondary

#C4B89A

accent

#AD5ACE

background

#F8F9FC

surface

#F0F1F8

border

#CBCBD1

text

#0C0D13

muted

#7D7E82

Preview Lab

Preview with #516CB1

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

Preview Lab → · Contrast checker → · Palette generator →