#517ACE#517ACE

#517ACE is a mid, vivid blue. Relative luminance 0.201; OKLCH L 59.0% C 0.137 H 263.2°. Best body text is #000000 at 5.03:1 contrast (WCAG AA passes).

Color values

HEX	#517ACE
RGB	rgb(81, 122, 206)
HSL	hsl(220, 56%, 56%)
HSV	hsv(220, 61%, 81%)
CMYK	cmyk(60.7%, 40.8%, 0%, 19.2%)
CIE-LAB	lab(51.98, 11.60, -47.79)
CIE-LCH	lch(51.98, 49.18, 283.65°)
OKLab	oklab(58.98% -0.0162 -0.136)
OKLCH	oklch(58.98% 0.137 263.2)
XYZ	xyz(21.4896, 20.1228, 61.1322)
Luminance	0.2013 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517ACE #CEA551

analogous

#51B9CE #517ACE #6751CE

triadic

#517ACE #CE517A #7ACE51

tetradic

#517ACE #CE51B9 #CEA551 #51CE67

square

#517ACE #CE51B9 #CEA551 #51CE67

split-complementary

#517ACE #CE6751 #B9CE51

monochromatic

#244280 #325BB0 #517ACE #819FDB #B1C3E9

Accessibility & contrast

On white

4.18

#517ACE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.03

#517ACE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517ACE

5.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517ACE	#FFFFFF	#000000	##000000
##517ACE	1.00	4.18	5.03	5.03
#FFFFFF	4.18	1.00	21.00	21.00
#000000	5.03	21.00	1.00	1.00
##000000	5.03	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5582D1

Deuteranopia (green-blind)

#4477CC

Tritanopia (blue-blind)

#008D9A

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #517ace;
/* rgb */ color: rgb(81, 122, 206);
/* oklch */ color: oklch(59.0% 0.137 263.2);

Tailwind

colors: {
  custom: {
    50: '#8ca0dd',
    500: '#517ace',
    950: '#000000',
  },
}

SCSS

$custom: #517ace;
$custom-light: #8ca0dd;
$custom-dark: #000000;

JSON

{
  "hex": "#517ace",
  "rgb": {
    "r": 81,
    "g": 122,
    "b": 206
  },
  "hsl": {
    "h": 220.32,
    "s": 56.054,
    "l": 56.275
  },
  "oklch": {
    "l": 0.58979,
    "c": 0.13692,
    "h": 263.2
  },
  "luminance": 0.20125
}

Semantic roles & 50–950 ramp

primary

#517ACE

secondary

#D7C6A4

accent

#AE48DF

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #517ACE

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

Preview Lab → · Contrast checker → · Palette generator →