#517BC3#517BC3

#517BC3 is a mid, vivid blue. Relative luminance 0.199; OKLCH L 58.6% C 0.121 H 260.6°. Best body text is #000000 at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#517BC3
RGB	rgb(81, 123, 195)
HSL	hsl(218, 49%, 54%)
HSV	hsv(218, 58%, 76%)
CMYK	cmyk(58.5%, 36.9%, 0%, 23.5%)
CIE-LAB	lab(51.67, 7.30, -42.01)
CIE-LCH	lch(51.67, 42.64, 279.86°)
OKLab	oklab(58.55% -0.0197 -0.119)
OKLCH	oklch(58.55% 0.121 260.6)
XYZ	xyz(20.3232, 19.8537, 54.3803)
Luminance	0.1986 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517BC3 #C39951

analogous

#51B4C3 #517BC3 #6051C3

triadic

#517BC3 #C3517B #7BC351

tetradic

#517BC3 #C351B4 #C39951 #51C360

square

#517BC3 #C351B4 #C39951 #51C360

split-complementary

#517BC3 #C36051 #B4C351

monochromatic

#274372 #375EA0 #517BC3 #7F9ED3 #ACC0E2

Accessibility & contrast

On white

4.22

#517BC3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.97

#517BC3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517BC3

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517BC3	#FFFFFF	#000000	##000000
##517BC3	1.00	4.22	4.97	4.97
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.97	21.00	1.00	1.00
##000000	4.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D81C6

Deuteranopia (green-blind)

#4E76C1

Tritanopia (blue-blind)

#008B96

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #517bc3;
/* rgb */ color: rgb(81, 123, 195);
/* oklch */ color: oklch(58.6% 0.121 260.6);

Tailwind

colors: {
  custom: {
    50: '#8ba0d5',
    500: '#517bc3',
    950: '#000000',
  },
}

SCSS

$custom: #517bc3;
$custom-light: #8ba0d5;
$custom-dark: #000000;

JSON

{
  "hex": "#517bc3",
  "rgb": {
    "r": 81,
    "g": 123,
    "b": 195
  },
  "hsl": {
    "h": 217.895,
    "s": 48.718,
    "l": 54.118
  },
  "oklch": {
    "l": 0.58553,
    "c": 0.12063,
    "h": 260.6
  },
  "luminance": 0.19855
}

Semantic roles & 50–950 ramp

primary

#517BC3

secondary

#D0BEA0

accent

#A650D8

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0D0E14

muted

#7D7E83

Preview Lab

Preview with #517BC3

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

Preview Lab → · Contrast checker → · Palette generator →