#517BD2#517BD2

#517BD2 is a mid, vivid blue. Relative luminance 0.206; OKLCH L 59.4% C 0.141 H 263.3°. Best body text is #000000 at 5.11:1 contrast (WCAG AA passes).

Color values

HEX	#517BD2
RGB	rgb(81, 123, 210)
HSL	hsl(220, 59%, 57%)
HSV	hsv(220, 61%, 82%)
CMYK	cmyk(61.4%, 41.4%, 0%, 17.6%)
CIE-LAB	lab(52.47, 12.35, -49.27)
CIE-LCH	lch(52.47, 50.80, 284.07°)
OKLab	oklab(59.43% -0.0165 -0.1403)
OKLCH	oklch(59.43% 0.141 263.3)
XYZ	xyz(22.1051, 20.5664, 63.7651)
Luminance	0.2057 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517BD2 #D2A851

analogous

#51BCD2 #517BD2 #6851D2

triadic

#517BD2 #D2517B #7BD251

tetradic

#517BD2 #D251BC #D2A851 #51D268

square

#517BD2 #D251BC #D2A851 #51D268

split-complementary

#517BD2 #D26851 #BCD251

monochromatic

#234386 #2F5BB7 #517BD2 #82A0DF #B2C5EB

Accessibility & contrast

On white

4.11

#517BD2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.11

#517BD2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517BD2

5.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517BD2	#FFFFFF	#000000	##000000
##517BD2	1.00	4.11	5.11	5.11
#FFFFFF	4.11	1.00	21.00	21.00
#000000	5.11	21.00	1.00	1.00
##000000	5.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5484D5

Deuteranopia (green-blind)

#4278D0

Tritanopia (blue-blind)

#008F9C

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #517bd2;
/* rgb */ color: rgb(81, 123, 210);
/* oklch */ color: oklch(59.4% 0.141 263.3);

Tailwind

colors: {
  custom: {
    50: '#8da0e0',
    500: '#517bd2',
    950: '#000000',
  },
}

SCSS

$custom: #517bd2;
$custom-light: #8da0e0;
$custom-dark: #000000;

JSON

{
  "hex": "#517bd2",
  "rgb": {
    "r": 81,
    "g": 123,
    "b": 210
  },
  "hsl": {
    "h": 220.465,
    "s": 58.904,
    "l": 57.059
  },
  "oklch": {
    "l": 0.59433,
    "c": 0.14125,
    "h": 263.3
  },
  "luminance": 0.20568
}

Semantic roles & 50–950 ramp

primary

#517BD2

secondary

#DAC9A5

accent

#AF46E2

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #517BD2

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

Preview Lab → · Contrast checker → · Palette generator →