#517DCA#517DCA

#517DCA is a mid, vivid blue. Relative luminance 0.207; OKLCH L 59.4% C 0.128 H 260.9°. Best body text is #000000 at 5.14:1 contrast (WCAG AA passes).

Color values

HEX	#517DCA
RGB	rgb(81, 125, 202)
HSL	hsl(218, 53%, 55%)
HSV	hsv(218, 60%, 79%)
CMYK	cmyk(59.9%, 38.1%, 0%, 20.8%)
CIE-LAB	lab(52.60, 8.43, -44.53)
CIE-LCH	lch(52.60, 45.32, 280.72°)
OKLab	oklab(59.39% -0.0203 -0.1264)
OKLCH	oklch(59.39% 0.128 260.9)
XYZ	xyz(21.3839, 20.6790, 58.7302)
Luminance	0.2068 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517DCA #CA9E51

analogous

#51B9CA #517DCA #6151CA

triadic

#517DCA #CA517D #7DCA51

tetradic

#517DCA #CA51B9 #CA9E51 #51CA61

square

#517DCA #CA51B9 #CA9E51 #51CA61

split-complementary

#517DCA #CA6151 #B9CA51

monochromatic

#25457B #345FAA #517DCA #80A0D8 #AFC3E7

Accessibility & contrast

On white

4.09

#517DCA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.14

#517DCA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517DCA

5.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517DCA	#FFFFFF	#000000	##000000
##517DCA	1.00	4.09	5.14	5.14
#FFFFFF	4.09	1.00	21.00	21.00
#000000	5.14	21.00	1.00	1.00
##000000	5.14	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C84CD

Deuteranopia (green-blind)

#4C78C8

Tritanopia (blue-blind)

#008E9A

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #517dca;
/* rgb */ color: rgb(81, 125, 202);
/* oklch */ color: oklch(59.4% 0.128 260.9);

Tailwind

colors: {
  custom: {
    50: '#8ca2da',
    500: '#517dca',
    950: '#000000',
  },
}

SCSS

$custom: #517dca;
$custom-light: #8ca2da;
$custom-dark: #000000;

JSON

{
  "hex": "#517dca",
  "rgb": {
    "r": 81,
    "g": 125,
    "b": 202
  },
  "hsl": {
    "h": 218.182,
    "s": 53.304,
    "l": 55.49
  },
  "oklch": {
    "l": 0.5939,
    "c": 0.12799,
    "h": 260.9
  },
  "luminance": 0.20681
}

Semantic roles & 50–950 ramp

primary

#517DCA

secondary

#D5C2A2

accent

#A84BDD

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0F15

muted

#7E7E83

Preview Lab

Preview with #517DCA

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

Preview Lab → · Contrast checker → · Palette generator →