#517CD3#517CD3

#517CD3 is a mid, vivid blue. Relative luminance 0.209; OKLCH L 59.7% C 0.141 H 263.0°. Best body text is #000000 at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#517CD3
RGB	rgb(81, 124, 211)
HSL	hsl(220, 60%, 57%)
HSV	hsv(220, 62%, 83%)
CMYK	cmyk(61.6%, 41.2%, 0%, 17.3%)
CIE-LAB	lab(52.80, 12.07, -49.31)
CIE-LCH	lch(52.80, 50.77, 283.76°)
OKLab	oklab(59.71% -0.0173 -0.1404)
OKLCH	oklch(59.71% 0.141 263)
XYZ	xyz(22.3548, 20.8658, 64.4648)
Luminance	0.2087 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517CD3 #D3A851

analogous

#51BDD3 #517CD3 #6751D3

triadic

#517CD3 #D3517C #7CD351

tetradic

#517CD3 #D351BD #D3A851 #51D367

square

#517CD3 #D351BD #D3A851 #51D367

split-complementary

#517CD3 #D36751 #BDD351

monochromatic

#224487 #2F5CB8 #517CD3 #82A1DF #B3C6EC

Accessibility & contrast

On white

4.06

#517CD3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.17

#517CD3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517CD3

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517CD3	#FFFFFF	#000000	##000000
##517CD3	1.00	4.06	5.17	5.17
#FFFFFF	4.06	1.00	21.00	21.00
#000000	5.17	21.00	1.00	1.00
##000000	5.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5584D6

Deuteranopia (green-blind)

#4278D1

Tritanopia (blue-blind)

#00909D

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #517cd3;
/* rgb */ color: rgb(81, 124, 211);
/* oklch */ color: oklch(59.7% 0.141 263.0);

Tailwind

colors: {
  custom: {
    50: '#8da1e1',
    500: '#517cd3',
    950: '#000000',
  },
}

SCSS

$custom: #517cd3;
$custom-light: #8da1e1;
$custom-dark: #000000;

JSON

{
  "hex": "#517cd3",
  "rgb": {
    "r": 81,
    "g": 124,
    "b": 211
  },
  "hsl": {
    "h": 220.154,
    "s": 59.633,
    "l": 57.255
  },
  "oklch": {
    "l": 0.59706,
    "c": 0.14145,
    "h": 263
  },
  "luminance": 0.20868
}

Semantic roles & 50–950 ramp

primary

#517CD3

secondary

#DAC9A6

accent

#AF45E3

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #517CD3

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

Preview Lab → · Contrast checker → · Palette generator →