#517BCD#517BCD

#517BCD is a mid, vivid blue. Relative luminance 0.203; OKLCH L 59.1% C 0.134 H 262.5°. Best body text is #000000 at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#517BCD
RGB	rgb(81, 123, 205)
HSL	hsl(220, 55%, 56%)
HSV	hsv(220, 60%, 80%)
CMYK	cmyk(60.5%, 40%, 0%, 19.6%)
CIE-LAB	lab(52.20, 10.65, -46.87)
CIE-LCH	lch(52.20, 48.07, 282.81°)
OKLab	oklab(59.13% -0.0175 -0.1332)
OKLCH	oklch(59.13% 0.134 262.5)
XYZ	xyz(21.4919, 20.3212, 60.5356)
Luminance	0.2032 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517BCD #CDA351

analogous

#51B9CD #517BCD #6551CD

triadic

#517BCD #CD517B #7BCD51

tetradic

#517BCD #CD51B9 #CDA351 #51CD65

square

#517BCD #CD51B9 #CDA351 #51CD65

split-complementary

#517BCD #CD6551 #B9CD51

monochromatic

#25437F #325CAF #517BCD #819FDB #B0C3E8

Accessibility & contrast

On white

4.15

#517BCD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.06

#517BCD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517BCD

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517BCD	#FFFFFF	#000000	##000000
##517BCD	1.00	4.15	5.06	5.06
#FFFFFF	4.15	1.00	21.00	21.00
#000000	5.06	21.00	1.00	1.00
##000000	5.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5783D0

Deuteranopia (green-blind)

#4677CB

Tritanopia (blue-blind)

#008D9A

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #517bcd;
/* rgb */ color: rgb(81, 123, 205);
/* oklch */ color: oklch(59.1% 0.134 262.5);

Tailwind

colors: {
  custom: {
    50: '#8ca0dd',
    500: '#517bcd',
    950: '#000000',
  },
}

SCSS

$custom: #517bcd;
$custom-light: #8ca0dd;
$custom-dark: #000000;

JSON

{
  "hex": "#517bcd",
  "rgb": {
    "r": 81,
    "g": 123,
    "b": 205
  },
  "hsl": {
    "h": 219.677,
    "s": 55.357,
    "l": 56.078
  },
  "oklch": {
    "l": 0.59133,
    "c": 0.13438,
    "h": 262.5
  },
  "luminance": 0.20323
}

Semantic roles & 50–950 ramp

primary

#517BCD

secondary

#D7C5A3

accent

#AC49DF

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #517BCD

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

Preview Lab → · Contrast checker → · Palette generator →