#517BCA#517BCA

#517BCA is a mid, vivid blue. Relative luminance 0.202; OKLCH L 59.0% C 0.130 H 262.0°. Best body text is #000000 at 5.04:1 contrast (WCAG AA passes).

Color values

HEX	#517BCA
RGB	rgb(81, 123, 202)
HSL	hsl(219, 53%, 55%)
HSV	hsv(219, 60%, 79%)
CMYK	cmyk(59.9%, 39.1%, 0%, 20.8%)
CIE-LAB	lab(52.04, 9.64, -45.42)
CIE-LCH	lch(52.04, 46.43, 281.99°)
OKLab	oklab(58.96% -0.0181 -0.129)
OKLCH	oklch(58.96% 0.13 262)
XYZ	xyz(21.1333, 20.1777, 58.6467)
Luminance	0.2018 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517BCA #CAA051

analogous

#51B7CA #517BCA #6451CA

triadic

#517BCA #CA517B #7BCA51

tetradic

#517BCA #CA51B7 #CAA051 #51CA64

square

#517BCA #CA51B7 #CAA051 #51CA64

split-complementary

#517BCA #CA6451 #B7CA51

monochromatic

#25437B #345DAA #517BCA #809FD8 #AFC2E7

Accessibility & contrast

On white

4.17

#517BCA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.04

#517BCA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517BCA

5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517BCA	#FFFFFF	#000000	##000000
##517BCA	1.00	4.17	5.04	5.04
#FFFFFF	4.17	1.00	21.00	21.00
#000000	5.04	21.00	1.00	1.00
##000000	5.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5982CD

Deuteranopia (green-blind)

#4977C8

Tritanopia (blue-blind)

#008D99

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #517bca;
/* rgb */ color: rgb(81, 123, 202);
/* oklch */ color: oklch(59.0% 0.130 262.0);

Tailwind

colors: {
  custom: {
    50: '#8ca0da',
    500: '#517bca',
    950: '#000000',
  },
}

SCSS

$custom: #517bca;
$custom-light: #8ca0da;
$custom-dark: #000000;

JSON

{
  "hex": "#517bca",
  "rgb": {
    "r": 81,
    "g": 123,
    "b": 202
  },
  "hsl": {
    "h": 219.174,
    "s": 53.304,
    "l": 55.49
  },
  "oklch": {
    "l": 0.58957,
    "c": 0.13026,
    "h": 262
  },
  "luminance": 0.2018
}

Semantic roles & 50–950 ramp

primary

#517BCA

secondary

#D5C3A2

accent

#AA4BDD

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #517BCA

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

Preview Lab → · Contrast checker → · Palette generator →