#517DEB#517DEB

#517DEB is a mid, vivid blue. Relative luminance 0.224; OKLCH L 61.4% C 0.173 H 265.3°. Best body text is #000000 at 5.48:1 contrast (WCAG AA passes).

Color values

HEX	#517DEB
RGB	rgb(81, 125, 235)
HSL	hsl(223, 79%, 62%)
HSV	hsv(223, 66%, 92%)
CMYK	cmyk(65.5%, 46.8%, 0%, 7.8%)
CIE-LAB	lab(54.46, 19.68, -60.14)
CIE-LCH	lch(54.46, 63.28, 288.12°)
OKLab	oklab(61.43% -0.0142 -0.1722)
OKLCH	oklch(61.43% 0.173 265.3)
XYZ	xyz(25.7171, 22.4123, 81.5519)
Luminance	0.2241 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517DEB #EBBF51

analogous

#51CAEB #517DEB #7251EB

triadic

#517DEB #EB517D #7DEB51

tetradic

#517DEB #EB51CA #EBBF51 #51EB72

square

#517DEB #EB51CA #EBBF51 #51EB72

split-complementary

#517DEB #EB7251 #CAEB51

monochromatic

#1440AE #1A54E5 #517DEB #88A6F1 #BFCFF8

Accessibility & contrast

On white

3.83

#517DEB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.48

#517DEB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517DEB

5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517DEB	#FFFFFF	#000000	##000000
##517DEB	1.00	3.83	5.48	5.48
#FFFFFF	3.83	1.00	21.00	21.00
#000000	5.48	21.00	1.00	1.00
##000000	5.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#448AEF

Deuteranopia (green-blind)

#247CE9

Tritanopia (blue-blind)

#0096A9

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #517deb;
/* rgb */ color: rgb(81, 125, 235);
/* oklch */ color: oklch(61.4% 0.173 265.3);

Tailwind

colors: {
  custom: {
    50: '#91a2f2',
    500: '#517deb',
    950: '#000000',
  },
}

SCSS

$custom: #517deb;
$custom-light: #91a2f2;
$custom-dark: #000000;

JSON

{
  "hex": "#517deb",
  "rgb": {
    "r": 81,
    "g": 125,
    "b": 235
  },
  "hsl": {
    "h": 222.857,
    "s": 79.381,
    "l": 61.961
  },
  "oklch": {
    "l": 0.6143,
    "c": 0.17279,
    "h": 265.3
  },
  "luminance": 0.22415
}

Semantic roles & 50–950 ramp

primary

#517DEB

secondary

#E8D8B0

accent

#A00ADC

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0F17

muted

#7E7E85

Preview Lab

Preview with #517DEB

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

Preview Lab → · Contrast checker → · Palette generator →