#516CDD#516CDD

#516CDD is a mid, vivid blue. Relative luminance 0.177; OKLCH L 57.1% C 0.175 H 270.0°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#516CDD
RGB	rgb(81, 108, 221)
HSL	hsl(228, 67%, 59%)
HSV	hsv(228, 63%, 87%)
CMYK	cmyk(63.3%, 51.1%, 0%, 13.3%)
CIE-LAB	lab(49.12, 25.38, -60.88)
CIE-LCH	lch(49.12, 65.95, 292.63°)
OKLab	oklab(57.09% -0.0001 -0.1746)
OKLCH	oklch(57.09% 0.175 270)
XYZ	xyz(21.8026, 17.6930, 70.6587)
Luminance	0.1769 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#516CDD #DDC251

analogous

#51B2DD #516CDD #7C51DD

triadic

#516CDD #DD516C #6CDD51

tetradic

#516CDD #DD51B2 #DDC251 #51DD7C

square

#516CDD #DD51B2 #DDC251 #51DD7C

split-complementary

#516CDD #DD7C51 #B2DD51

monochromatic

#1D3596 #2747C9 #516CDD #8497E7 #B7C3F1

Accessibility & contrast

On white

4.63

#516CDD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#516CDD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #516CDD

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##516CDD	#FFFFFF	#000000	##FFFFFF
##516CDD	1.00	4.63	4.54	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.54	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#297BE1

Deuteranopia (green-blind)

#006FDB

Tritanopia (blue-blind)

#00869A

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #516cdd;
/* rgb */ color: rgb(81, 108, 221);
/* oklch */ color: oklch(57.1% 0.175 270.0);

Tailwind

colors: {
  custom: {
    50: '#8f95e8',
    500: '#516cdd',
    950: '#000000',
  },
}

SCSS

$custom: #516cdd;
$custom-light: #8f95e8;
$custom-dark: #000000;

JSON

{
  "hex": "#516cdd",
  "rgb": {
    "r": 81,
    "g": 108,
    "b": 221
  },
  "hsl": {
    "h": 228.429,
    "s": 67.308,
    "l": 59.216
  },
  "oklch": {
    "l": 0.57087,
    "c": 0.17458,
    "h": 270
  },
  "luminance": 0.17695
}

Semantic roles & 50–950 ramp

primary

#516CDD

secondary

#E0D6AA

accent

#C93EEA

background

#F9F9FE

surface

#F2F1FD

border

#CCCBD5

text

#0E0D16

muted

#7E7E84

Preview Lab

Preview with #516CDD

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

Preview Lab → · Contrast checker → · Palette generator →