#516BCB#516BCB

#516BCB is a mid, vivid blue. Relative luminance 0.166; OKLCH L 55.7% C 0.151 H 269.6°. Best body text is #FFFFFF at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#516BCB
RGB	rgb(81, 107, 203)
HSL	hsl(227, 54%, 56%)
HSV	hsv(227, 60%, 80%)
CMYK	cmyk(60.1%, 47.3%, 0%, 20.4%)
CIE-LAB	lab(47.72, 19.87, -52.88)
CIE-LCH	lch(47.72, 56.49, 290.60°)
OKLab	oklab(55.66% -0.0011 -0.1511)
OKLCH	oklch(55.66% 0.151 269.6)
XYZ	xyz(19.4269, 16.5749, 58.6639)
Luminance	0.1658 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#516BCB #CBB151

analogous

#51A8CB #516BCB #7451CB

triadic

#516BCB #CB516B #6BCB51

tetradic

#516BCB #CB51A8 #CBB151 #51CB74

square

#516BCB #CB51A8 #CBB151 #51CB74

split-complementary

#516BCB #CB7451 #A8CB51

monochromatic

#25387C #334DAC #516BCB #8093D9 #AFBBE7

Accessibility & contrast

On white

4.87

#516BCB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.32

#516BCB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #516BCB

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##516BCB	#FFFFFF	#000000	##FFFFFF
##516BCB	1.00	4.87	4.32	4.87
#FFFFFF	4.87	1.00	21.00	1.00
#000000	4.32	21.00	1.00	21.00
##FFFFFF	4.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C77CF

Deuteranopia (green-blind)

#276CC9

Tritanopia (blue-blind)

#008191

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #516bcb;
/* rgb */ color: rgb(81, 107, 203);
/* oklch */ color: oklch(55.7% 0.151 269.6);

Tailwind

colors: {
  custom: {
    50: '#8c95db',
    500: '#516bcb',
    950: '#000000',
  },
}

SCSS

$custom: #516bcb;
$custom-light: #8c95db;
$custom-dark: #000000;

JSON

{
  "hex": "#516bcb",
  "rgb": {
    "r": 81,
    "g": 107,
    "b": 203
  },
  "hsl": {
    "h": 227.213,
    "s": 53.982,
    "l": 55.686
  },
  "oklch": {
    "l": 0.55658,
    "c": 0.15108,
    "h": 269.6
  },
  "luminance": 0.16577
}

Semantic roles & 50–950 ramp

primary

#516BCB

secondary

#D5CAA3

accent

#BE4ADD

background

#F9F9FD

surface

#F1F1FB

border

#CBCBD4

text

#0D0D15

muted

#7E7E83

Preview Lab

Preview with #516BCB

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

Preview Lab → · Contrast checker → · Palette generator →