#517FDC#517FDC

#517FDC is a mid, vivid blue. Relative luminance 0.221; OKLCH L 60.9% C 0.150 H 262.9°. Best body text is #000000 at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#517FDC
RGB	rgb(81, 127, 220)
HSL	hsl(220, 67%, 59%)
HSV	hsv(220, 63%, 86%)
CMYK	cmyk(63.2%, 42.3%, 0%, 13.7%)
CIE-LAB	lab(54.13, 13.31, -52.28)
CIE-LCH	lch(54.13, 53.95, 284.28°)
OKLab	oklab(60.89% -0.0186 -0.1491)
OKLCH	oklch(60.89% 0.15 262.9)
XYZ	xyz(23.8965, 22.0932, 70.7014)
Luminance	0.2210 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517FDC #DCAE51

analogous

#51C5DC #517FDC #6951DC

triadic

#517FDC #DC517F #7FDC51

tetradic

#517FDC #DC51C5 #DCAE51 #51DC69

square

#517FDC #DC51C5 #DCAE51 #51DC69

split-complementary

#517FDC #DC6951 #C5DC51

monochromatic

#1E4595 #285DC8 #517FDC #84A4E6 #B7CAF0

Accessibility & contrast

On white

3.88

#517FDC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.42

#517FDC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517FDC

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517FDC	#FFFFFF	#000000	##000000
##517FDC	1.00	3.88	5.42	5.42
#FFFFFF	3.88	1.00	21.00	21.00
#000000	5.42	21.00	1.00	1.00
##000000	5.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5488E0

Deuteranopia (green-blind)

#3F7BDA

Tritanopia (blue-blind)

#0094A3

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #517fdc;
/* rgb */ color: rgb(81, 127, 220);
/* oklch */ color: oklch(60.9% 0.150 262.9);

Tailwind

colors: {
  custom: {
    50: '#8ea3e7',
    500: '#517fdc',
    950: '#000000',
  },
}

SCSS

$custom: #517fdc;
$custom-light: #8ea3e7;
$custom-dark: #000000;

JSON

{
  "hex": "#517fdc",
  "rgb": {
    "r": 81,
    "g": 127,
    "b": 220
  },
  "hsl": {
    "h": 220.144,
    "s": 66.507,
    "l": 59.02
  },
  "oklch": {
    "l": 0.6089,
    "c": 0.15022,
    "h": 262.9
  },
  "luminance": 0.22095
}

Semantic roles & 50–950 ramp

primary

#517FDC

secondary

#E0CEA9

accent

#B13EE9

background

#F9FAFE

surface

#F2F3FC

border

#CCCDD5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #517FDC

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

Preview Lab → · Contrast checker → · Palette generator →