#517CC8#517CC8

#517CC8 is a mid, vivid blue. Relative luminance 0.203; OKLCH L 59.1% C 0.126 H 261.1°. Best body text is #000000 at 5.07:1 contrast (WCAG AA passes).

Color values

HEX	#517CC8
RGB	rgb(81, 124, 200)
HSL	hsl(218, 52%, 55%)
HSV	hsv(218, 60%, 78%)
CMYK	cmyk(59.5%, 38%, 0%, 21.6%)
CIE-LAB	lab(52.21, 8.36, -44.00)
CIE-LCH	lch(52.21, 44.79, 280.76°)
OKLab	oklab(59.06% -0.0196 -0.1248)
OKLCH	oklch(59.06% 0.126 261.1)
XYZ	xyz(21.0227, 20.3330, 57.4492)
Luminance	0.2034 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517CC8 #C89D51

analogous

#51B8C8 #517CC8 #6151C8

triadic

#517CC8 #C8517C #7CC851

tetradic

#517CC8 #C851B8 #C89D51 #51C861

square

#517CC8 #C851B8 #C89D51 #51C861

split-complementary

#517CC8 #C86151 #B8C851

monochromatic

#264479 #355EA7 #517CC8 #809FD7 #AEC2E5

Accessibility & contrast

On white

4.14

#517CC8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.07

#517CC8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517CC8

5.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517CC8	#FFFFFF	#000000	##000000
##517CC8	1.00	4.14	5.07	5.07
#FFFFFF	4.14	1.00	21.00	21.00
#000000	5.07	21.00	1.00	1.00
##000000	5.07	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C83CB

Deuteranopia (green-blind)

#4C77C6

Tritanopia (blue-blind)

#008D98

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #517cc8;
/* rgb */ color: rgb(81, 124, 200);
/* oklch */ color: oklch(59.1% 0.126 261.1);

Tailwind

colors: {
  custom: {
    50: '#8ba1d9',
    500: '#517cc8',
    950: '#000000',
  },
}

SCSS

$custom: #517cc8;
$custom-light: #8ba1d9;
$custom-dark: #000000;

JSON

{
  "hex": "#517cc8",
  "rgb": {
    "r": 81,
    "g": 124,
    "b": 200
  },
  "hsl": {
    "h": 218.319,
    "s": 51.965,
    "l": 55.098
  },
  "oklch": {
    "l": 0.59057,
    "c": 0.12638,
    "h": 261.1
  },
  "luminance": 0.20335
}

Semantic roles & 50–950 ramp

primary

#517CC8

secondary

#D3C1A1

accent

#A84CDB

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0E14

muted

#7E7E83

Preview Lab

Preview with #517CC8

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

Preview Lab → · Contrast checker → · Palette generator →