#516EB5#516EB5

#516EB5 is a mid, moderate blue. Relative luminance 0.162; OKLCH L 54.9% C 0.116 H 265.9°. Best body text is #FFFFFF at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#516EB5
RGB	rgb(81, 110, 181)
HSL	hsl(223, 40%, 51%)
HSV	hsv(223, 55%, 71%)
CMYK	cmyk(55.2%, 39.2%, 0%, 29%)
CIE-LAB	lab(47.28, 10.63, -40.89)
CIE-LCH	lch(47.28, 42.24, 284.57°)
OKLab	oklab(54.92% -0.0083 -0.1159)
OKLCH	oklch(54.92% 0.116 265.9)
XYZ	xyz(17.3070, 16.2361, 45.9290)
Luminance	0.1624 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#516EB5 #B59851

analogous

#51A0B5 #516EB5 #6651B5

triadic

#516EB5 #B5516E #6EB551

tetradic

#516EB5 #B551A0 #B59851 #51B566

square

#516EB5 #B551A0 #B59851 #51B566

split-complementary

#516EB5 #B56651 #A0B551

monochromatic

#2A3A62 #3C538D #516EB5 #7C92C7 #A7B6DA

Accessibility & contrast

On white

4.94

#516EB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.25

#516EB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #516EB5

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##516EB5	#FFFFFF	#000000	##FFFFFF
##516EB5	1.00	4.94	4.25	4.94
#FFFFFF	4.94	1.00	21.00	1.00
#000000	4.25	21.00	1.00	21.00
##FFFFFF	4.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5175B8

Deuteranopia (green-blind)

#456CB3

Tritanopia (blue-blind)

#177E89

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #516eb5;
/* rgb */ color: rgb(81, 110, 181);
/* oklch */ color: oklch(54.9% 0.116 265.9);

Tailwind

colors: {
  custom: {
    50: '#8997cb',
    500: '#516eb5',
    950: '#000000',
  },
}

SCSS

$custom: #516eb5;
$custom-light: #8997cb;
$custom-dark: #000000;

JSON

{
  "hex": "#516eb5",
  "rgb": {
    "r": 81,
    "g": 110,
    "b": 181
  },
  "hsl": {
    "h": 222.6,
    "s": 40.323,
    "l": 51.373
  },
  "oklch": {
    "l": 0.54915,
    "c": 0.11615,
    "h": 265.9
  },
  "luminance": 0.16237
}

Semantic roles & 50–950 ramp

primary

#516EB5

secondary

#C7BA9B

accent

#AD58D0

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0C0D13

muted

#7D7E82

Preview Lab

Preview with #516EB5

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

Preview Lab → · Contrast checker → · Palette generator →