#517FD3#517FD3

#517FD3 is a mid, vivid blue. Relative luminance 0.216; OKLCH L 60.3% C 0.138 H 261.5°. Best body text is #000000 at 5.33:1 contrast (WCAG AA passes).

Color values

HEX	#517FD3
RGB	rgb(81, 127, 211)
HSL	hsl(219, 60%, 57%)
HSV	hsv(219, 62%, 83%)
CMYK	cmyk(61.6%, 39.8%, 0%, 17.3%)
CIE-LAB	lab(53.63, 10.25, -48.00)
CIE-LCH	lch(53.63, 49.08, 282.05°)
OKLab	oklab(60.35% -0.0204 -0.1365)
OKLCH	oklch(60.35% 0.138 261.5)
XYZ	xyz(22.7365, 21.6292, 64.5921)
Luminance	0.2163 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517FD3 #D3A551

analogous

#51C0D3 #517FD3 #6451D3

triadic

#517FD3 #D3517F #7FD351

tetradic

#517FD3 #D351C0 #D3A551 #51D364

square

#517FD3 #D351C0 #D3A551 #51D364

split-complementary

#517FD3 #D36451 #C0D351

monochromatic

#224687 #2F5FB8 #517FD3 #82A3DF #B3C7EC

Accessibility & contrast

On white

3.94

#517FD3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.33

#517FD3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517FD3

5.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517FD3	#FFFFFF	#000000	##000000
##517FD3	1.00	3.94	5.33	5.33
#FFFFFF	3.94	1.00	21.00	21.00
#000000	5.33	21.00	1.00	1.00
##000000	5.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A87D6

Deuteranopia (green-blind)

#487BD1

Tritanopia (blue-blind)

#00929F

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #517fd3;
/* rgb */ color: rgb(81, 127, 211);
/* oklch */ color: oklch(60.3% 0.138 261.5);

Tailwind

colors: {
  custom: {
    50: '#8da3e1',
    500: '#517fd3',
    950: '#000000',
  },
}

SCSS

$custom: #517fd3;
$custom-light: #8da3e1;
$custom-dark: #000000;

JSON

{
  "hex": "#517fd3",
  "rgb": {
    "r": 81,
    "g": 127,
    "b": 211
  },
  "hsl": {
    "h": 218.769,
    "s": 59.633,
    "l": 57.255
  },
  "oklch": {
    "l": 0.60347,
    "c": 0.13801,
    "h": 261.5
  },
  "luminance": 0.21631
}

Semantic roles & 50–950 ramp

primary

#517FD3

secondary

#DAC8A6

accent

#AB45E3

background

#F9FAFD

surface

#F1F3FB

border

#CBCDD4

text

#0D0F15

muted

#7E7F83

Preview Lab

Preview with #517FD3

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

Preview Lab → · Contrast checker → · Palette generator →