#517CD1#517CD1

#517CD1 is a mid, vivid blue. Relative luminance 0.208; OKLCH L 59.6% C 0.139 H 262.7°. Best body text is #000000 at 5.15:1 contrast (WCAG AA passes).

Color values

HEX	#517CD1
RGB	rgb(81, 124, 209)
HSL	hsl(220, 58%, 57%)
HSV	hsv(220, 61%, 82%)
CMYK	cmyk(61.2%, 40.7%, 0%, 18%)
CIE-LAB	lab(52.69, 11.40, -48.36)
CIE-LCH	lch(52.69, 49.68, 283.26°)
OKLab	oklab(59.59% -0.0177 -0.1376)
OKLCH	oklch(59.59% 0.139 262.7)
XYZ	xyz(22.1056, 20.7661, 63.1526)
Luminance	0.2077 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517CD1 #D1A651

analogous

#51BCD1 #517CD1 #6651D1

triadic

#517CD1 #D1517C #7CD151

tetradic

#517CD1 #D151BC #D1A651 #51D166

square

#517CD1 #D151BC #D1A651 #51D166

split-complementary

#517CD1 #D16651 #BCD151

monochromatic

#234485 #305DB5 #517CD1 #81A0DE #B2C5EB

Accessibility & contrast

On white

4.07

#517CD1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.15

#517CD1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517CD1

5.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517CD1	#FFFFFF	#000000	##000000
##517CD1	1.00	4.07	5.15	5.15
#FFFFFF	4.07	1.00	21.00	21.00
#000000	5.15	21.00	1.00	1.00
##000000	5.15	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5684D4

Deuteranopia (green-blind)

#4478CF

Tritanopia (blue-blind)

#008F9C

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #517cd1;
/* rgb */ color: rgb(81, 124, 209);
/* oklch */ color: oklch(59.6% 0.139 262.7);

Tailwind

colors: {
  custom: {
    50: '#8da1df',
    500: '#517cd1',
    950: '#000000',
  },
}

SCSS

$custom: #517cd1;
$custom-light: #8da1df;
$custom-dark: #000000;

JSON

{
  "hex": "#517cd1",
  "rgb": {
    "r": 81,
    "g": 124,
    "b": 209
  },
  "hsl": {
    "h": 219.844,
    "s": 58.182,
    "l": 56.863
  },
  "oklch": {
    "l": 0.59586,
    "c": 0.13871,
    "h": 262.7
  },
  "luminance": 0.20768
}

Semantic roles & 50–950 ramp

primary

#517CD1

secondary

#D9C7A5

accent

#AD46E1

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #517CD1

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

Preview Lab → · Contrast checker → · Palette generator →