#517CDD#517CDD

#517CDD is a mid, vivid blue. Relative luminance 0.214; OKLCH L 60.3% C 0.155 H 264.3°. Best body text is #000000 at 5.28:1 contrast (WCAG AA passes).

Color values

HEX	#517CDD
RGB	rgb(81, 124, 221)
HSL	hsl(222, 67%, 59%)
HSV	hsv(222, 63%, 87%)
CMYK	cmyk(63.3%, 43.9%, 0%, 13.3%)
CIE-LAB	lab(53.37, 15.48, -54.06)
CIE-LCH	lch(53.37, 56.23, 285.98°)
OKLab	oklab(60.32% -0.0155 -0.1543)
OKLCH	oklch(60.32% 0.155 264.3)
XYZ	xyz(23.6476, 21.3829, 71.2737)
Luminance	0.2139 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517CDD #DDB251

analogous

#51C2DD #517CDD #6C51DD

triadic

#517CDD #DD517C #7CDD51

tetradic

#517CDD #DD51C2 #DDB251 #51DD6C

square

#517CDD #DD51C2 #DDB251 #51DD6C

split-complementary

#517CDD #DD6C51 #C2DD51

monochromatic

#1D4296 #2759C9 #517CDD #84A3E7 #B7C9F1

Accessibility & contrast

On white

3.98

#517CDD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.28

#517CDD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517CDD

5.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517CDD	#FFFFFF	#000000	##000000
##517CDD	1.00	3.98	5.28	5.28
#FFFFFF	3.98	1.00	21.00	21.00
#000000	5.28	21.00	1.00	1.00
##000000	5.28	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E86E1

Deuteranopia (green-blind)

#3779DB

Tritanopia (blue-blind)

#0092A2

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #517cdd;
/* rgb */ color: rgb(81, 124, 221);
/* oklch */ color: oklch(60.3% 0.155 264.3);

Tailwind

colors: {
  custom: {
    50: '#8fa1e8',
    500: '#517cdd',
    950: '#000000',
  },
}

SCSS

$custom: #517cdd;
$custom-light: #8fa1e8;
$custom-dark: #000000;

JSON

{
  "hex": "#517cdd",
  "rgb": {
    "r": 81,
    "g": 124,
    "b": 221
  },
  "hsl": {
    "h": 221.571,
    "s": 67.308,
    "l": 59.216
  },
  "oklch": {
    "l": 0.60323,
    "c": 0.15509,
    "h": 264.3
  },
  "luminance": 0.21385
}

Semantic roles & 50–950 ramp

primary

#517CDD

secondary

#E0CFAA

accent

#B53EEA

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #517CDD

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

Preview Lab → · Contrast checker → · Palette generator →