#517ACC#517ACC

#517ACC is a mid, vivid blue. Relative luminance 0.200; OKLCH L 58.9% C 0.134 H 262.9°. Best body text is #000000 at 5.01:1 contrast (WCAG AA passes).

Color values

HEX	#517ACC
RGB	rgb(81, 122, 204)
HSL	hsl(220, 55%, 56%)
HSV	hsv(220, 60%, 80%)
CMYK	cmyk(60.3%, 40.2%, 0%, 20%)
CIE-LAB	lab(51.87, 10.93, -46.83)
CIE-LCH	lch(51.87, 48.09, 283.14°)
OKLab	oklab(58.86% -0.0166 -0.1331)
OKLCH	oklch(58.86% 0.134 262.9)
XYZ	xyz(21.2482, 20.0262, 59.8607)
Luminance	0.2003 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517ACC #CCA351

analogous

#51B7CC #517ACC #6551CC

triadic

#517ACC #CC517A #7ACC51

tetradic

#517ACC #CC51B7 #CCA351 #51CC65

square

#517ACC #CC51B7 #CCA351 #51CC65

split-complementary

#517ACC #CC6551 #B7CC51

monochromatic

#25427E #335CAD #517ACC #809EDA #B0C2E8

Accessibility & contrast

On white

4.20

#517ACC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.01

#517ACC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517ACC

5.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517ACC	#FFFFFF	#000000	##000000
##517ACC	1.00	4.20	5.01	5.01
#FFFFFF	4.20	1.00	21.00	21.00
#000000	5.01	21.00	1.00	1.00
##000000	5.01	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5682CF

Deuteranopia (green-blind)

#4576CA

Tritanopia (blue-blind)

#008C99

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #517acc;
/* rgb */ color: rgb(81, 122, 204);
/* oklch */ color: oklch(58.9% 0.134 262.9);

Tailwind

colors: {
  custom: {
    50: '#8ca0dc',
    500: '#517acc',
    950: '#000000',
  },
}

SCSS

$custom: #517acc;
$custom-light: #8ca0dc;
$custom-dark: #000000;

JSON

{
  "hex": "#517acc",
  "rgb": {
    "r": 81,
    "g": 122,
    "b": 204
  },
  "hsl": {
    "h": 220,
    "s": 54.667,
    "l": 55.882
  },
  "oklch": {
    "l": 0.58859,
    "c": 0.13416,
    "h": 262.9
  },
  "luminance": 0.20028
}

Semantic roles & 50–950 ramp

primary

#517ACC

secondary

#D6C5A3

accent

#AD4ADE

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #517ACC

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

Preview Lab → · Contrast checker → · Palette generator →