#517DC9#517DC9

#517DC9 is a mid, vivid blue. Relative luminance 0.206; OKLCH L 59.3% C 0.127 H 260.7°. Best body text is #000000 at 5.13:1 contrast (WCAG AA passes).

Color values

HEX	#517DC9
RGB	rgb(81, 125, 201)
HSL	hsl(218, 53%, 55%)
HSV	hsv(218, 60%, 79%)
CMYK	cmyk(59.7%, 37.8%, 0%, 21.2%)
CIE-LAB	lab(52.54, 8.09, -44.05)
CIE-LCH	lch(52.54, 44.78, 280.41°)
OKLab	oklab(59.33% -0.0205 -0.125)
OKLCH	oklch(59.33% 0.127 260.7)
XYZ	xyz(21.2659, 20.6318, 58.1087)
Luminance	0.2063 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517DC9 #C99D51

analogous

#51B9C9 #517DC9 #6151C9

triadic

#517DC9 #C9517D #7DC951

tetradic

#517DC9 #C951B9 #C99D51 #51C961

square

#517DC9 #C951B9 #C99D51 #51C961

split-complementary

#517DC9 #C96151 #B9C951

monochromatic

#26457A #345FA9 #517DC9 #80A0D7 #AEC3E6

Accessibility & contrast

On white

4.10

#517DC9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.13

#517DC9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517DC9

5.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517DC9	#FFFFFF	#000000	##000000
##517DC9	1.00	4.10	5.13	5.13
#FFFFFF	4.10	1.00	21.00	21.00
#000000	5.13	21.00	1.00	1.00
##000000	5.13	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D83CC

Deuteranopia (green-blind)

#4D78C7

Tritanopia (blue-blind)

#008E99

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #517dc9;
/* rgb */ color: rgb(81, 125, 201);
/* oklch */ color: oklch(59.3% 0.127 260.7);

Tailwind

colors: {
  custom: {
    50: '#8ba2da',
    500: '#517dc9',
    950: '#000000',
  },
}

SCSS

$custom: #517dc9;
$custom-light: #8ba2da;
$custom-dark: #000000;

JSON

{
  "hex": "#517dc9",
  "rgb": {
    "r": 81,
    "g": 125,
    "b": 201
  },
  "hsl": {
    "h": 218,
    "s": 52.632,
    "l": 55.294
  },
  "oklch": {
    "l": 0.59332,
    "c": 0.12663,
    "h": 260.7
  },
  "luminance": 0.20634
}

Semantic roles & 50–950 ramp

primary

#517DC9

secondary

#D4C2A2

accent

#A74CDC

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0F15

muted

#7E7E83

Preview Lab

Preview with #517DC9

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

Preview Lab → · Contrast checker → · Palette generator →