#516DDD#516DDD

#516DDD is a mid, vivid blue. Relative luminance 0.179; OKLCH L 57.3% C 0.173 H 269.7°. Best body text is #000000 at 4.58:1 contrast (WCAG AA passes).

Color values

HEX	#516DDD
RGB	rgb(81, 109, 221)
HSL	hsl(228, 67%, 59%)
HSV	hsv(228, 63%, 87%)
CMYK	cmyk(63.3%, 50.7%, 0%, 13.3%)
CIE-LAB	lab(49.38, 24.76, -60.46)
CIE-LCH	lch(49.38, 65.33, 292.27°)
OKLab	oklab(57.28% -0.001 -0.1733)
OKLCH	oklch(57.28% 0.173 269.7)
XYZ	xyz(21.9087, 17.9051, 70.6941)
Luminance	0.1791 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#516DDD #DDC151

analogous

#51B3DD #516DDD #7B51DD

triadic

#516DDD #DD516D #6DDD51

tetradic

#516DDD #DD51B3 #DDC151 #51DD7B

square

#516DDD #DD51B3 #DDC151 #51DD7B

split-complementary

#516DDD #DD7B51 #B3DD51

monochromatic

#1D3696 #2748C9 #516DDD #8498E7 #B7C3F1

Accessibility & contrast

On white

4.58

#516DDD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.58

#516DDD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #516DDD

4.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##516DDD	#FFFFFF	#000000	##000000
##516DDD	1.00	4.58	4.58	4.58
#FFFFFF	4.58	1.00	21.00	21.00
#000000	4.58	21.00	1.00	1.00
##000000	4.58	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C7CE1

Deuteranopia (green-blind)

#006FDB

Tritanopia (blue-blind)

#00879B

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #516ddd;
/* rgb */ color: rgb(81, 109, 221);
/* oklch */ color: oklch(57.3% 0.173 269.7);

Tailwind

colors: {
  custom: {
    50: '#8f96e8',
    500: '#516ddd',
    950: '#000000',
  },
}

SCSS

$custom: #516ddd;
$custom-light: #8f96e8;
$custom-dark: #000000;

JSON

{
  "hex": "#516ddd",
  "rgb": {
    "r": 81,
    "g": 109,
    "b": 221
  },
  "hsl": {
    "h": 228,
    "s": 67.308,
    "l": 59.216
  },
  "oklch": {
    "l": 0.57283,
    "c": 0.17334,
    "h": 269.7
  },
  "luminance": 0.17907
}

Semantic roles & 50–950 ramp

primary

#516DDD

secondary

#E0D5AA

accent

#C83EEA

background

#F9F9FE

surface

#F2F1FD

border

#CCCBD5

text

#0E0D16

muted

#7E7E84

Preview Lab

Preview with #516DDD

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

Preview Lab → · Contrast checker → · Palette generator →