#517CEB#517CEB

#517CEB is a mid, vivid blue. Relative luminance 0.222; OKLCH L 61.2% C 0.174 H 265.6°. Best body text is #000000 at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#517CEB
RGB	rgb(81, 124, 235)
HSL	hsl(223, 79%, 62%)
HSV	hsv(223, 66%, 92%)
CMYK	cmyk(65.5%, 47.2%, 0%, 7.8%)
CIE-LAB	lab(54.20, 20.29, -60.57)
CIE-LCH	lch(54.20, 63.88, 288.52°)
OKLab	oklab(61.23% -0.0133 -0.1735)
OKLCH	oklch(61.23% 0.174 265.6)
XYZ	xyz(25.5912, 22.1604, 81.5099)
Luminance	0.2216 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517CEB #EBC051

analogous

#51C9EB #517CEB #7351EB

triadic

#517CEB #EB517C #7CEB51

tetradic

#517CEB #EB51C9 #EBC051 #51EB73

square

#517CEB #EB51C9 #EBC051 #51EB73

split-complementary

#517CEB #EB7351 #C9EB51

monochromatic

#143FAE #1A53E5 #517CEB #88A5F1 #BFCFF8

Accessibility & contrast

On white

3.87

#517CEB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.43

#517CEB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517CEB

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517CEB	#FFFFFF	#000000	##000000
##517CEB	1.00	3.87	5.43	5.43
#FFFFFF	3.87	1.00	21.00	21.00
#000000	5.43	21.00	1.00	1.00
##000000	5.43	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4289EF

Deuteranopia (green-blind)

#207BE9

Tritanopia (blue-blind)

#0096A8

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #517ceb;
/* rgb */ color: rgb(81, 124, 235);
/* oklch */ color: oklch(61.2% 0.174 265.6);

Tailwind

colors: {
  custom: {
    50: '#91a1f2',
    500: '#517ceb',
    950: '#000000',
  },
}

SCSS

$custom: #517ceb;
$custom-light: #91a1f2;
$custom-dark: #000000;

JSON

{
  "hex": "#517ceb",
  "rgb": {
    "r": 81,
    "g": 124,
    "b": 235
  },
  "hsl": {
    "h": 223.247,
    "s": 79.381,
    "l": 61.961
  },
  "oklch": {
    "l": 0.61227,
    "c": 0.17397,
    "h": 265.6
  },
  "luminance": 0.22163
}

Semantic roles & 50–950 ramp

primary

#517CEB

secondary

#E8D8B0

accent

#A10ADC

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #517CEB

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

Preview Lab → · Contrast checker → · Palette generator →