#517BDD#517BDD

#517BDD is a mid, vivid blue. Relative luminance 0.211; OKLCH L 60.1% C 0.156 H 264.7°. Best body text is #000000 at 5.23:1 contrast (WCAG AA passes).

Color values

HEX	#517BDD
RGB	rgb(81, 123, 221)
HSL	hsl(222, 67%, 59%)
HSV	hsv(222, 63%, 87%)
CMYK	cmyk(63.3%, 44.3%, 0%, 13.3%)
CIE-LAB	lab(53.10, 16.10, -54.49)
CIE-LCH	lch(53.10, 56.82, 286.46°)
OKLab	oklab(60.11% -0.0145 -0.1556)
OKLCH	oklch(60.11% 0.156 264.7)
XYZ	xyz(23.5229, 21.1336, 71.2321)
Luminance	0.2114 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517BDD #DDB351

analogous

#51C1DD #517BDD #6D51DD

triadic

#517BDD #DD517B #7BDD51

tetradic

#517BDD #DD51C1 #DDB351 #51DD6D

square

#517BDD #DD51C1 #DDB351 #51DD6D

split-complementary

#517BDD #DD6D51 #C1DD51

monochromatic

#1D4296 #2758C9 #517BDD #84A2E7 #B7C9F1

Accessibility & contrast

On white

4.02

#517BDD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.23

#517BDD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517BDD

5.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517BDD	#FFFFFF	#000000	##000000
##517BDD	1.00	4.02	5.23	5.23
#FFFFFF	4.02	1.00	21.00	21.00
#000000	5.23	21.00	1.00	1.00
##000000	5.23	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C86E1

Deuteranopia (green-blind)

#3579DB

Tritanopia (blue-blind)

#0091A1

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #517bdd;
/* rgb */ color: rgb(81, 123, 221);
/* oklch */ color: oklch(60.1% 0.156 264.7);

Tailwind

colors: {
  custom: {
    50: '#8fa0e8',
    500: '#517bdd',
    950: '#000000',
  },
}

SCSS

$custom: #517bdd;
$custom-light: #8fa0e8;
$custom-dark: #000000;

JSON

{
  "hex": "#517bdd",
  "rgb": {
    "r": 81,
    "g": 123,
    "b": 221
  },
  "hsl": {
    "h": 222,
    "s": 67.308,
    "l": 59.216
  },
  "oklch": {
    "l": 0.60115,
    "c": 0.15627,
    "h": 264.7
  },
  "luminance": 0.21136
}

Semantic roles & 50–950 ramp

primary

#517BDD

secondary

#E0D0AA

accent

#B63EEA

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #517BDD

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

Preview Lab → · Contrast checker → · Palette generator →