#517DBD#517DBD

#517DBD is a mid, moderate blue. Relative luminance 0.201; OKLCH L 58.7% C 0.110 H 257.7°. Best body text is #000000 at 5.02:1 contrast (WCAG AA passes).

Color values

HEX	#517DBD
RGB	rgb(81, 125, 189)
HSL	hsl(216, 45%, 53%)
HSV	hsv(216, 57%, 74%)
CMYK	cmyk(57.1%, 33.9%, 0%, 25.9%)
CIE-LAB	lab(51.94, 4.11, -38.15)
CIE-LCH	lch(51.94, 38.37, 276.15°)
OKLab	oklab(58.66% -0.0235 -0.1077)
OKLCH	oklch(58.66% 0.11 257.7)
XYZ	xyz(19.9091, 20.0890, 50.9627)
Luminance	0.2009 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517DBD #BD9151

analogous

#51B3BD #517DBD #5B51BD

triadic

#517DBD #BD517D #7DBD51

tetradic

#517DBD #BD51B3 #BD9151 #51BD5B

square

#517DBD #BD51B3 #BD9151 #51BD5B

split-complementary

#517DBD #BD5B51 #B3BD51

monochromatic

#29446B #396097 #517DBD #7D9ECE #AABFDF

Accessibility & contrast

On white

4.18

#517DBD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.02

#517DBD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517DBD

5.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517DBD	#FFFFFF	#000000	##000000
##517DBD	1.00	4.18	5.02	5.02
#FFFFFF	4.18	1.00	21.00	21.00
#000000	5.02	21.00	1.00	1.00
##000000	5.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6381C0

Deuteranopia (green-blind)

#5577BC

Tritanopia (blue-blind)

#008B94

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #517dbd;
/* rgb */ color: rgb(81, 125, 189);
/* oklch */ color: oklch(58.7% 0.110 257.7);

Tailwind

colors: {
  custom: {
    50: '#8aa2d1',
    500: '#517dbd',
    950: '#000000',
  },
}

SCSS

$custom: #517dbd;
$custom-light: #8aa2d1;
$custom-dark: #000000;

JSON

{
  "hex": "#517dbd",
  "rgb": {
    "r": 81,
    "g": 125,
    "b": 189
  },
  "hsl": {
    "h": 215.556,
    "s": 45,
    "l": 52.941
  },
  "oklch": {
    "l": 0.58662,
    "c": 0.11028,
    "h": 257.7
  },
  "luminance": 0.20091
}

Semantic roles & 50–950 ramp

primary

#517DBD

secondary

#CCB99E

accent

#A053D5

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0F14

muted

#7D7E82

Preview Lab

Preview with #517DBD

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

Preview Lab → · Contrast checker → · Palette generator →