#516FDD#516FDD

#516FDD is a mid, vivid blue. Relative luminance 0.183; OKLCH L 57.7% C 0.171 H 269.0°. Best body text is #000000 at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#516FDD
RGB	rgb(81, 111, 221)
HSL	hsl(227, 67%, 59%)
HSV	hsv(227, 63%, 87%)
CMYK	cmyk(63.3%, 49.8%, 0%, 13.3%)
CIE-LAB	lab(49.90, 23.51, -59.62)
CIE-LCH	lch(49.90, 64.09, 291.52°)
OKLab	oklab(57.68% -0.0029 -0.1708)
OKLCH	oklch(57.68% 0.171 269)
XYZ	xyz(22.1245, 18.3367, 70.7660)
Luminance	0.1834 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#516FDD #DDBF51

analogous

#51B5DD #516FDD #7951DD

triadic

#516FDD #DD516F #6FDD51

tetradic

#516FDD #DD51B5 #DDBF51 #51DD79

square

#516FDD #DD51B5 #DDBF51 #51DD79

split-complementary

#516FDD #DD7951 #B5DD51

monochromatic

#1D3796 #274AC9 #516FDD #8499E7 #B7C4F1

Accessibility & contrast

On white

4.50

#516FDD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.67

#516FDD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #516FDD

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##516FDD	#FFFFFF	#000000	##000000
##516FDD	1.00	4.50	4.67	4.67
#FFFFFF	4.50	1.00	21.00	21.00
#000000	4.67	21.00	1.00	1.00
##000000	4.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#327DE1

Deuteranopia (green-blind)

#0771DB

Tritanopia (blue-blind)

#00899B

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #516fdd;
/* rgb */ color: rgb(81, 111, 221);
/* oklch */ color: oklch(57.7% 0.171 269.0);

Tailwind

colors: {
  custom: {
    50: '#8f97e8',
    500: '#516fdd',
    950: '#000000',
  },
}

SCSS

$custom: #516fdd;
$custom-light: #8f97e8;
$custom-dark: #000000;

JSON

{
  "hex": "#516fdd",
  "rgb": {
    "r": 81,
    "g": 111,
    "b": 221
  },
  "hsl": {
    "h": 227.143,
    "s": 67.308,
    "l": 59.216
  },
  "oklch": {
    "l": 0.57678,
    "c": 0.17087,
    "h": 269
  },
  "luminance": 0.18339
}

Semantic roles & 50–950 ramp

primary

#516FDD

secondary

#E0D5AA

accent

#C53EEA

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0D16

muted

#7E7E84

Preview Lab

Preview with #516FDD

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

Preview Lab → · Contrast checker → · Palette generator →