#517ACF#517ACF

#517ACF is a mid, vivid blue. Relative luminance 0.202; OKLCH L 59.0% C 0.138 H 263.3°. Best body text is #000000 at 5.03:1 contrast (WCAG AA passes).

Color values

HEX	#517ACF
RGB	rgb(81, 122, 207)
HSL	hsl(220, 57%, 56%)
HSV	hsv(220, 61%, 81%)
CMYK	cmyk(60.9%, 41.1%, 0%, 18.8%)
CIE-LAB	lab(52.03, 11.94, -48.27)
CIE-LCH	lch(52.03, 49.73, 283.89°)
OKLab	oklab(59.04% -0.016 -0.1374)
OKLCH	oklch(59.04% 0.138 263.3)
XYZ	xyz(21.6115, 20.1715, 61.7740)
Luminance	0.2017 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517ACF #CFA651

analogous

#51B9CF #517ACF #6751CF

triadic

#517ACF #CF517A #7ACF51

tetradic

#517ACF #CF51B9 #CFA651 #51CF67

square

#517ACF #CF51B9 #CFA651 #51CF67

split-complementary

#517ACF #CF6751 #B9CF51

monochromatic

#244282 #315BB2 #517ACF #819FDC #B1C3E9

Accessibility & contrast

On white

4.17

#517ACF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.03

#517ACF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517ACF

5.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517ACF	#FFFFFF	#000000	##000000
##517ACF	1.00	4.17	5.03	5.03
#FFFFFF	4.17	1.00	21.00	21.00
#000000	5.03	21.00	1.00	1.00
##000000	5.03	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5482D2

Deuteranopia (green-blind)

#4377CD

Tritanopia (blue-blind)

#008D9A

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #517acf;
/* rgb */ color: rgb(81, 122, 207);
/* oklch */ color: oklch(59.0% 0.138 263.3);

Tailwind

colors: {
  custom: {
    50: '#8ca0de',
    500: '#517acf',
    950: '#000000',
  },
}

SCSS

$custom: #517acf;
$custom-light: #8ca0de;
$custom-dark: #000000;

JSON

{
  "hex": "#517acf",
  "rgb": {
    "r": 81,
    "g": 122,
    "b": 207
  },
  "hsl": {
    "h": 220.476,
    "s": 56.757,
    "l": 56.471
  },
  "oklch": {
    "l": 0.59039,
    "c": 0.1383,
    "h": 263.3
  },
  "luminance": 0.20173
}

Semantic roles & 50–950 ramp

primary

#517ACF

secondary

#D8C7A4

accent

#AE48E0

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #517ACF

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

Preview Lab → · Contrast checker → · Palette generator →