#517BDE#517BDE

#517BDE is a mid, vivid blue. Relative luminance 0.212; OKLCH L 60.2% C 0.158 H 264.8°. Best body text is #000000 at 5.24:1 contrast (WCAG AA passes).

Color values

HEX	#517BDE
RGB	rgb(81, 123, 222)
HSL	hsl(222, 68%, 59%)
HSV	hsv(222, 64%, 87%)
CMYK	cmyk(63.5%, 44.6%, 0%, 12.9%)
CIE-LAB	lab(53.15, 16.44, -54.96)
CIE-LCH	lch(53.15, 57.37, 286.65°)
OKLab	oklab(60.18% -0.0143 -0.157)
OKLCH	oklch(60.18% 0.158 264.8)
XYZ	xyz(23.6565, 21.1870, 71.9359)
Luminance	0.2119 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517BDE #DEB451

analogous

#51C1DE #517BDE #6E51DE

triadic

#517BDE #DE517B #7BDE51

tetradic

#517BDE #DE51C1 #DEB451 #51DE6E

square

#517BDE #DE51C1 #DEB451 #51DE6E

split-complementary

#517BDE #DE6E51 #C1DE51

monochromatic

#1D4198 #2758CB #517BDE #84A2E8 #B8C9F2

Accessibility & contrast

On white

4.01

#517BDE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.24

#517BDE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517BDE

5.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517BDE	#FFFFFF	#000000	##000000
##517BDE	1.00	4.01	5.24	5.24
#FFFFFF	4.01	1.00	21.00	21.00
#000000	5.24	21.00	1.00	1.00
##000000	5.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C86E2

Deuteranopia (green-blind)

#3479DC

Tritanopia (blue-blind)

#0092A2

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #517bde;
/* rgb */ color: rgb(81, 123, 222);
/* oklch */ color: oklch(60.2% 0.158 264.8);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#517bde",
  "rgb": {
    "r": 81,
    "g": 123,
    "b": 222
  },
  "hsl": {
    "h": 222.128,
    "s": 68.116,
    "l": 59.412
  },
  "oklch": {
    "l": 0.60179,
    "c": 0.15763,
    "h": 264.8
  },
  "luminance": 0.21189
}

Semantic roles & 50–950 ramp

primary

#517BDE

secondary

#E1D1AA

accent

#B73DEB

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #517BDE

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

Preview Lab → · Contrast checker → · Palette generator →