#516DD1#516DD1

#516DD1 is a mid, vivid blue. Relative luminance 0.173; OKLCH L 56.5% C 0.157 H 269.1°. Best body text is #FFFFFF at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#516DD1
RGB	rgb(81, 109, 209)
HSL	hsl(227, 58%, 57%)
HSV	hsv(227, 61%, 82%)
CMYK	cmyk(61.2%, 47.8%, 0%, 18%)
CIE-LAB	lab(48.62, 20.66, -54.86)
CIE-LCH	lch(48.62, 58.63, 290.64°)
OKLab	oklab(56.46% -0.0024 -0.1569)
OKLCH	oklch(56.46% 0.157 269.1)
XYZ	xyz(20.3667, 17.2883, 62.5729)
Luminance	0.1729 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#516DD1 #D1B551

analogous

#51ADD1 #516DD1 #7551D1

triadic

#516DD1 #D1516D #6DD151

tetradic

#516DD1 #D151AD #D1B551 #51D175

square

#516DD1 #D151AD #D1B551 #51D175

split-complementary

#516DD1 #D17551 #ADD151

monochromatic

#233885 #304DB5 #516DD1 #8196DE #B2BEEB

Accessibility & contrast

On white

4.71

#516DD1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.46

#516DD1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #516DD1

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##516DD1	#FFFFFF	#000000	##FFFFFF
##516DD1	1.00	4.71	4.46	4.71
#FFFFFF	4.71	1.00	21.00	1.00
#000000	4.46	21.00	1.00	21.00
##FFFFFF	4.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A7AD5

Deuteranopia (green-blind)

#236ECF

Tritanopia (blue-blind)

#008495

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #516dd1;
/* rgb */ color: rgb(81, 109, 209);
/* oklch */ color: oklch(56.5% 0.157 269.1);

Tailwind

colors: {
  custom: {
    50: '#8d96e0',
    500: '#516dd1',
    950: '#000000',
  },
}

SCSS

$custom: #516dd1;
$custom-light: #8d96e0;
$custom-dark: #000000;

JSON

{
  "hex": "#516dd1",
  "rgb": {
    "r": 81,
    "g": 109,
    "b": 209
  },
  "hsl": {
    "h": 226.875,
    "s": 58.182,
    "l": 56.863
  },
  "oklch": {
    "l": 0.56463,
    "c": 0.1569,
    "h": 269.1
  },
  "luminance": 0.1729
}

Semantic roles & 50–950 ramp

primary

#516DD1

secondary

#D9CEA5

accent

#BF46E1

background

#F9F9FD

surface

#F1F1FB

border

#CBCBD4

text

#0D0D15

muted

#7E7E83

Preview Lab

Preview with #516DD1

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

Preview Lab → · Contrast checker → · Palette generator →