#517DCE#517DCE

#517DCE is a mid, vivid blue. Relative luminance 0.209; OKLCH L 59.6% C 0.133 H 261.7°. Best body text is #000000 at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#517DCE
RGB	rgb(81, 125, 206)
HSL	hsl(219, 56%, 56%)
HSV	hsv(219, 61%, 81%)
CMYK	cmyk(60.7%, 39.3%, 0%, 19.2%)
CIE-LAB	lab(52.81, 9.77, -46.47)
CIE-LCH	lch(52.81, 47.49, 281.88°)
OKLab	oklab(59.62% -0.0194 -0.132)
OKLCH	oklch(59.62% 0.133 261.7)
XYZ	xyz(21.8636, 20.8709, 61.2569)
Luminance	0.2087 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517DCE #CEA251

analogous

#51BCCE #517DCE #6451CE

triadic

#517DCE #CE517D #7DCE51

tetradic

#517DCE #CE51BC #CEA251 #51CE64

square

#517DCE #CE51BC #CEA251 #51CE64

split-complementary

#517DCE #CE6451 #BCCE51

monochromatic

#244580 #325EB0 #517DCE #81A1DB #B1C4E9

Accessibility & contrast

On white

4.06

#517DCE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.17

#517DCE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517DCE

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517DCE	#FFFFFF	#000000	##000000
##517DCE	1.00	4.06	5.17	5.17
#FFFFFF	4.06	1.00	21.00	21.00
#000000	5.17	21.00	1.00	1.00
##000000	5.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A84D1

Deuteranopia (green-blind)

#4979CC

Tritanopia (blue-blind)

#008F9B

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #517dce;
/* rgb */ color: rgb(81, 125, 206);
/* oklch */ color: oklch(59.6% 0.133 261.7);

Tailwind

colors: {
  custom: {
    50: '#8ca2dd',
    500: '#517dce',
    950: '#000000',
  },
}

SCSS

$custom: #517dce;
$custom-light: #8ca2dd;
$custom-dark: #000000;

JSON

{
  "hex": "#517dce",
  "rgb": {
    "r": 81,
    "g": 125,
    "b": 206
  },
  "hsl": {
    "h": 218.88,
    "s": 56.054,
    "l": 56.275
  },
  "oklch": {
    "l": 0.59622,
    "c": 0.13346,
    "h": 261.7
  },
  "luminance": 0.20873
}

Semantic roles & 50–950 ramp

primary

#517DCE

secondary

#D7C5A4

accent

#AA48DF

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0F15

muted

#7E7E83

Preview Lab

Preview with #517DCE

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

Preview Lab → · Contrast checker → · Palette generator →