#517AC8#517AC8

#517AC8 is a mid, vivid blue. Relative luminance 0.198; OKLCH L 58.6% C 0.129 H 262.2°. Best body text is #000000 at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#517AC8
RGB	rgb(81, 122, 200)
HSL	hsl(219, 52%, 55%)
HSV	hsv(219, 60%, 78%)
CMYK	cmyk(59.5%, 39%, 0%, 21.6%)
CIE-LAB	lab(51.65, 9.58, -44.89)
CIE-LCH	lch(51.65, 45.90, 282.05°)
OKLab	oklab(58.62% -0.0175 -0.1275)
OKLCH	oklch(58.62% 0.129 262.2)
XYZ	xyz(20.7746, 19.8368, 57.3665)
Luminance	0.1984 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517AC8 #C89F51

analogous

#51B5C8 #517AC8 #6451C8

triadic

#517AC8 #C8517A #7AC851

tetradic

#517AC8 #C851B5 #C89F51 #51C864

square

#517AC8 #C851B5 #C89F51 #51C864

split-complementary

#517AC8 #C86451 #B5C851

monochromatic

#264279 #355CA7 #517AC8 #809ED7 #AEC1E5

Accessibility & contrast

On white

4.23

#517AC8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.97

#517AC8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517AC8

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517AC8	#FFFFFF	#000000	##000000
##517AC8	1.00	4.23	4.97	4.97
#FFFFFF	4.23	1.00	21.00	21.00
#000000	4.97	21.00	1.00	1.00
##000000	4.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5981CB

Deuteranopia (green-blind)

#4976C6

Tritanopia (blue-blind)

#008B97

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #517ac8;
/* rgb */ color: rgb(81, 122, 200);
/* oklch */ color: oklch(58.6% 0.129 262.2);

Tailwind

colors: {
  custom: {
    50: '#8ba0d9',
    500: '#517ac8',
    950: '#000000',
  },
}

SCSS

$custom: #517ac8;
$custom-light: #8ba0d9;
$custom-dark: #000000;

JSON

{
  "hex": "#517ac8",
  "rgb": {
    "r": 81,
    "g": 122,
    "b": 200
  },
  "hsl": {
    "h": 219.328,
    "s": 51.965,
    "l": 55.098
  },
  "oklch": {
    "l": 0.58623,
    "c": 0.12865,
    "h": 262.2
  },
  "luminance": 0.19839
}

Semantic roles & 50–950 ramp

primary

#517AC8

secondary

#D3C2A1

accent

#AA4CDB

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0E14

muted

#7E7E83

Preview Lab

Preview with #517AC8

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

Preview Lab → · Contrast checker → · Palette generator →