#517DD2#517DD2

#517DD2 is a mid, vivid blue. Relative luminance 0.211; OKLCH L 59.9% C 0.139 H 262.3°. Best body text is #000000 at 5.21:1 contrast (WCAG AA passes).

Color values

HEX	#517DD2
RGB	rgb(81, 125, 210)
HSL	hsl(220, 59%, 57%)
HSV	hsv(220, 61%, 82%)
CMYK	cmyk(61.4%, 40.5%, 0%, 17.6%)
CIE-LAB	lab(53.02, 11.13, -48.40)
CIE-LCH	lch(53.02, 49.66, 282.95°)
OKLab	oklab(59.86% -0.0185 -0.1377)
OKLCH	oklch(59.86% 0.139 262.3)
XYZ	xyz(22.3558, 21.0677, 63.8486)
Luminance	0.2107 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517DD2 #D2A651

analogous

#51BDD2 #517DD2 #6651D2

triadic

#517DD2 #D2517D #7DD251

tetradic

#517DD2 #D251BD #D2A651 #51D266

square

#517DD2 #D251BD #D2A651 #51D266

split-complementary

#517DD2 #D26651 #BDD251

monochromatic

#234586 #2F5DB7 #517DD2 #82A1DF #B2C6EB

Accessibility & contrast

On white

4.03

#517DD2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.21

#517DD2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517DD2

5.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517DD2	#FFFFFF	#000000	##000000
##517DD2	1.00	4.03	5.21	5.21
#FFFFFF	4.03	1.00	21.00	21.00
#000000	5.21	21.00	1.00	1.00
##000000	5.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5785D5

Deuteranopia (green-blind)

#4579D0

Tritanopia (blue-blind)

#00909D

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #517dd2;
/* rgb */ color: rgb(81, 125, 210);
/* oklch */ color: oklch(59.9% 0.139 262.3);

Tailwind

colors: {
  custom: {
    50: '#8da2e0',
    500: '#517dd2',
    950: '#000000',
  },
}

SCSS

$custom: #517dd2;
$custom-light: #8da2e0;
$custom-dark: #000000;

JSON

{
  "hex": "#517dd2",
  "rgb": {
    "r": 81,
    "g": 125,
    "b": 210
  },
  "hsl": {
    "h": 219.535,
    "s": 58.904,
    "l": 57.059
  },
  "oklch": {
    "l": 0.59859,
    "c": 0.13893,
    "h": 262.3
  },
  "luminance": 0.2107
}

Semantic roles & 50–950 ramp

primary

#517DD2

secondary

#DAC8A5

accent

#AD46E2

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0F15

muted

#7E7E83

Preview Lab

Preview with #517DD2

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

Preview Lab → · Contrast checker → · Palette generator →