#517BDF#517BDF

#517BDF is a mid, vivid blue. Relative luminance 0.212; OKLCH L 60.2% C 0.159 H 264.9°. Best body text is #000000 at 5.25:1 contrast (WCAG AA passes).

Color values

HEX	#517BDF
RGB	rgb(81, 123, 223)
HSL	hsl(222, 69%, 60%)
HSV	hsv(222, 64%, 87%)
CMYK	cmyk(63.7%, 44.8%, 0%, 12.5%)
CIE-LAB	lab(53.21, 16.78, -55.43)
CIE-LCH	lch(53.21, 57.91, 286.84°)
OKLab	oklab(60.24% -0.0141 -0.1584)
OKLCH	oklch(60.24% 0.159 264.9)
XYZ	xyz(23.7910, 21.2408, 72.6438)
Luminance	0.2124 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517BDF #DFB551

analogous

#51C2DF #517BDF #6E51DF

triadic

#517BDF #DF517B #7BDF51

tetradic

#517BDF #DF51C2 #DFB551 #51DF6E

square

#517BDF #DF51C2 #DFB551 #51DF6E

split-complementary

#517BDF #DF6E51 #C2DF51

monochromatic

#1C4199 #2657CD #517BDF #85A2E9 #B8C9F2

Accessibility & contrast

On white

4.00

#517BDF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.25

#517BDF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517BDF

5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517BDF	#FFFFFF	#000000	##000000
##517BDF	1.00	4.00	5.25	5.25
#FFFFFF	4.00	1.00	21.00	21.00
#000000	5.25	21.00	1.00	1.00
##000000	5.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B86E3

Deuteranopia (green-blind)

#3279DD

Tritanopia (blue-blind)

#0092A2

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #517bdf;
/* rgb */ color: rgb(81, 123, 223);
/* oklch */ color: oklch(60.2% 0.159 264.9);

Tailwind

colors: {
  custom: {
    50: '#8fa0e9',
    500: '#517bdf',
    950: '#000000',
  },
}

SCSS

$custom: #517bdf;
$custom-light: #8fa0e9;
$custom-dark: #000000;

JSON

{
  "hex": "#517bdf",
  "rgb": {
    "r": 81,
    "g": 123,
    "b": 223
  },
  "hsl": {
    "h": 222.254,
    "s": 68.932,
    "l": 59.608
  },
  "oklch": {
    "l": 0.60243,
    "c": 0.15899,
    "h": 264.9
  },
  "luminance": 0.21243
}

Semantic roles & 50–950 ramp

primary

#517BDF

secondary

#E1D1AA

accent

#B83CEC

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #517BDF

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

Preview Lab → · Contrast checker → · Palette generator →