#517BCC#517BCC

#517BCC is a mid, vivid blue. Relative luminance 0.203; OKLCH L 59.1% C 0.133 H 262.4°. Best body text is #000000 at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#517BCC
RGB	rgb(81, 123, 204)
HSL	hsl(220, 55%, 56%)
HSV	hsv(220, 60%, 80%)
CMYK	cmyk(60.3%, 39.7%, 0%, 20%)
CIE-LAB	lab(52.14, 10.32, -46.39)
CIE-LCH	lch(52.14, 47.52, 282.54°)
OKLab	oklab(59.07% -0.0177 -0.1318)
OKLCH	oklch(59.07% 0.133 262.4)
XYZ	xyz(21.3716, 20.2730, 59.9019)
Luminance	0.2028 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517BCC #CCA251

analogous

#51B9CC #517BCC #6451CC

triadic

#517BCC #CC517B #7BCC51

tetradic

#517BCC #CC51B9 #CCA251 #51CC64

square

#517BCC #CC51B9 #CCA251 #51CC64

split-complementary

#517BCC #CC6451 #B9CC51

monochromatic

#25437E #335DAD #517BCC #809FDA #B0C3E8

Accessibility & contrast

On white

4.15

#517BCC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.06

#517BCC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517BCC

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517BCC	#FFFFFF	#000000	##000000
##517BCC	1.00	4.15	5.06	5.06
#FFFFFF	4.15	1.00	21.00	21.00
#000000	5.06	21.00	1.00	1.00
##000000	5.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5882CF

Deuteranopia (green-blind)

#4777CA

Tritanopia (blue-blind)

#008D99

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #517bcc;
/* rgb */ color: rgb(81, 123, 204);
/* oklch */ color: oklch(59.1% 0.133 262.4);

Tailwind

colors: {
  custom: {
    50: '#8ca0dc',
    500: '#517bcc',
    950: '#000000',
  },
}

SCSS

$custom: #517bcc;
$custom-light: #8ca0dc;
$custom-dark: #000000;

JSON

{
  "hex": "#517bcc",
  "rgb": {
    "r": 81,
    "g": 123,
    "b": 204
  },
  "hsl": {
    "h": 219.512,
    "s": 54.667,
    "l": 55.882
  },
  "oklch": {
    "l": 0.59074,
    "c": 0.13301,
    "h": 262.4
  },
  "luminance": 0.20275
}

Semantic roles & 50–950 ramp

primary

#517BCC

secondary

#D6C4A3

accent

#AB4ADE

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #517BCC

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

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