#517BEB#517BEB

#517BEB is a mid, vivid blue. Relative luminance 0.219; OKLCH L 61.0% C 0.175 H 265.9°. Best body text is #000000 at 5.38:1 contrast (WCAG AA passes).

Color values

HEX	#517BEB
RGB	rgb(81, 123, 235)
HSL	hsl(224, 79%, 62%)
HSV	hsv(224, 66%, 92%)
CMYK	cmyk(65.5%, 47.7%, 0%, 7.8%)
CIE-LAB	lab(53.93, 20.91, -60.99)
CIE-LCH	lch(53.93, 64.48, 288.92°)
OKLab	oklab(61.03% -0.0124 -0.1747)
OKLCH	oklch(61.03% 0.175 265.9)
XYZ	xyz(25.4665, 21.9110, 81.4683)
Luminance	0.2191 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517BEB #EBC151

analogous

#51C8EB #517BEB #7451EB

triadic

#517BEB #EB517B #7BEB51

tetradic

#517BEB #EB51C8 #EBC151 #51EB74

square

#517BEB #EB51C8 #EBC151 #51EB74

split-complementary

#517BEB #EB7451 #C8EB51

monochromatic

#143EAE #1A51E5 #517BEB #88A5F1 #BFCEF8

Accessibility & contrast

On white

3.90

#517BEB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.38

#517BEB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517BEB

5.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517BEB	#FFFFFF	#000000	##000000
##517BEB	1.00	3.90	5.38	5.38
#FFFFFF	3.90	1.00	21.00	21.00
#000000	5.38	21.00	1.00	1.00
##000000	5.38	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4088EF

Deuteranopia (green-blind)

#1C7AE9

Tritanopia (blue-blind)

#0095A8

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #517beb;
/* rgb */ color: rgb(81, 123, 235);
/* oklch */ color: oklch(61.0% 0.175 265.9);

Tailwind

colors: {
  custom: {
    50: '#91a0f2',
    500: '#517beb',
    950: '#000000',
  },
}

SCSS

$custom: #517beb;
$custom-light: #91a0f2;
$custom-dark: #000000;

JSON

{
  "hex": "#517beb",
  "rgb": {
    "r": 81,
    "g": 123,
    "b": 235
  },
  "hsl": {
    "h": 223.636,
    "s": 79.381,
    "l": 61.961
  },
  "oklch": {
    "l": 0.61026,
    "c": 0.17517,
    "h": 265.9
  },
  "luminance": 0.21913
}

Semantic roles & 50–950 ramp

primary

#517BEB

secondary

#E8D9B0

accent

#A20ADC

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #517BEB

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

Preview Lab → · Contrast checker → · Palette generator →