#517DCC#517DCC

#517DCC is a mid, vivid blue. Relative luminance 0.208; OKLCH L 59.5% C 0.131 H 261.3°. Best body text is #000000 at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#517DCC
RGB	rgb(81, 125, 204)
HSL	hsl(219, 55%, 56%)
HSV	hsv(219, 60%, 80%)
CMYK	cmyk(60.3%, 38.7%, 0%, 20%)
CIE-LAB	lab(52.70, 9.10, -45.50)
CIE-LCH	lch(52.70, 46.41, 281.31°)
OKLab	oklab(59.51% -0.0198 -0.1292)
OKLCH	oklch(59.51% 0.131 261.3)
XYZ	xyz(21.6222, 20.7743, 59.9854)
Luminance	0.2078 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517DCC #CCA051

analogous

#51BACC #517DCC #6251CC

triadic

#517DCC #CC517D #7DCC51

tetradic

#517DCC #CC51BA #CCA051 #51CC62

square

#517DCC #CC51BA #CCA051 #51CC62

split-complementary

#517DCC #CC6251 #BACC51

monochromatic

#25457E #335EAD #517DCC #80A0DA #B0C4E8

Accessibility & contrast

On white

4.07

#517DCC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.16

#517DCC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517DCC

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517DCC	#FFFFFF	#000000	##000000
##517DCC	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)

#5B84CF

Deuteranopia (green-blind)

#4A79CA

Tritanopia (blue-blind)

#008F9B

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #517dcc;
/* rgb */ color: rgb(81, 125, 204);
/* oklch */ color: oklch(59.5% 0.131 261.3);

Tailwind

colors: {
  custom: {
    50: '#8ca2dc',
    500: '#517dcc',
    950: '#000000',
  },
}

SCSS

$custom: #517dcc;
$custom-light: #8ca2dc;
$custom-dark: #000000;

JSON

{
  "hex": "#517dcc",
  "rgb": {
    "r": 81,
    "g": 125,
    "b": 204
  },
  "hsl": {
    "h": 218.537,
    "s": 54.667,
    "l": 55.882
  },
  "oklch": {
    "l": 0.59506,
    "c": 0.13073,
    "h": 261.3
  },
  "luminance": 0.20776
}

Semantic roles & 50–950 ramp

primary

#517DCC

secondary

#D6C4A3

accent

#A94ADE

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0F15

muted

#7E7E83

Preview Lab

Preview with #517DCC

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

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