#517BD7#517BD7

#517BD7 is a mid, vivid blue. Relative luminance 0.208; OKLCH L 59.7% C 0.148 H 264.0°. Best body text is #000000 at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#517BD7
RGB	rgb(81, 123, 215)
HSL	hsl(221, 63%, 58%)
HSV	hsv(221, 62%, 84%)
CMYK	cmyk(62.3%, 42.8%, 0%, 15.7%)
CIE-LAB	lab(52.75, 14.05, -51.66)
CIE-LCH	lch(52.75, 53.53, 285.21°)
OKLab	oklab(59.74% -0.0155 -0.1473)
OKLCH	oklch(59.74% 0.148 264)
XYZ	xyz(22.7378, 20.8195, 67.0971)
Luminance	0.2082 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517BD7 #D7AD51

analogous

#51BED7 #517BD7 #6A51D7

triadic

#517BD7 #D7517B #7BD751

tetradic

#517BD7 #D751BE #D7AD51 #51D76A

square

#517BD7 #D751BE #D7AD51 #51D76A

split-complementary

#517BD7 #D76A51 #BED751

monochromatic

#20438D #2C5ABF #517BD7 #83A1E2 #B5C6EE

Accessibility & contrast

On white

4.07

#517BD7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.16

#517BD7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517BD7

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517BD7	#FFFFFF	#000000	##000000
##517BD7	1.00	4.07	5.16	5.16
#FFFFFF	4.07	1.00	21.00	21.00
#000000	5.16	21.00	1.00	1.00
##000000	5.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5184DB

Deuteranopia (green-blind)

#3C78D5

Tritanopia (blue-blind)

#00909E

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #517bd7;
/* rgb */ color: rgb(81, 123, 215);
/* oklch */ color: oklch(59.7% 0.148 264.0);

Tailwind

colors: {
  custom: {
    50: '#8ea0e4',
    500: '#517bd7',
    950: '#000000',
  },
}

SCSS

$custom: #517bd7;
$custom-light: #8ea0e4;
$custom-dark: #000000;

JSON

{
  "hex": "#517bd7",
  "rgb": {
    "r": 81,
    "g": 123,
    "b": 215
  },
  "hsl": {
    "h": 221.194,
    "s": 62.617,
    "l": 58.039
  },
  "oklch": {
    "l": 0.5974,
    "c": 0.1481,
    "h": 264
  },
  "luminance": 0.20822
}

Semantic roles & 50–950 ramp

primary

#517BD7

secondary

#DDCCA7

accent

#B242E6

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0D0E15

muted

#7E7E84

Preview Lab

Preview with #517BD7

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

Preview Lab → · Contrast checker → · Palette generator →