#517BC4#517BC4

#517BC4 is a mid, vivid blue. Relative luminance 0.199; OKLCH L 58.6% C 0.122 H 260.8°. Best body text is #000000 at 4.98:1 contrast (WCAG AA passes).

Color values

HEX	#517BC4
RGB	rgb(81, 123, 196)
HSL	hsl(218, 49%, 54%)
HSV	hsv(218, 59%, 77%)
CMYK	cmyk(58.7%, 37.2%, 0%, 23.1%)
CIE-LAB	lab(51.72, 7.63, -42.50)
CIE-LCH	lch(51.72, 43.18, 280.19°)
OKLab	oklab(58.61% -0.0195 -0.1204)
OKLCH	oklch(58.61% 0.122 260.8)
XYZ	xyz(20.4366, 19.8990, 54.9778)
Luminance	0.1990 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517BC4 #C49A51

analogous

#51B5C4 #517BC4 #6151C4

triadic

#517BC4 #C4517B #7BC451

tetradic

#517BC4 #C451B5 #C49A51 #51C461

square

#517BC4 #C451B5 #C49A51 #51C461

split-complementary

#517BC4 #C46151 #B5C451

monochromatic

#274373 #375EA1 #517BC4 #7F9ED3 #ACC0E3

Accessibility & contrast

On white

4.22

#517BC4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.98

#517BC4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517BC4

4.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517BC4	#FFFFFF	#000000	##000000
##517BC4	1.00	4.22	4.98	4.98
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.98	21.00	1.00	1.00
##000000	4.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C81C7

Deuteranopia (green-blind)

#4D76C2

Tritanopia (blue-blind)

#008B96

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #517bc4;
/* rgb */ color: rgb(81, 123, 196);
/* oklch */ color: oklch(58.6% 0.122 260.8);

Tailwind

colors: {
  custom: {
    50: '#8ba0d6',
    500: '#517bc4',
    950: '#000000',
  },
}

SCSS

$custom: #517bc4;
$custom-light: #8ba0d6;
$custom-dark: #000000;

JSON

{
  "hex": "#517bc4",
  "rgb": {
    "r": 81,
    "g": 123,
    "b": 196
  },
  "hsl": {
    "h": 218.087,
    "s": 49.356,
    "l": 54.314
  },
  "oklch": {
    "l": 0.5861,
    "c": 0.12201,
    "h": 260.8
  },
  "luminance": 0.19901
}

Semantic roles & 50–950 ramp

primary

#517BC4

secondary

#D1BFA0

accent

#A64FD9

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0D0E14

muted

#7D7E83

Preview Lab

Preview with #517BC4

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

Preview Lab → · Contrast checker → · Palette generator →