#517AEC#517AEC

#517AEC is a mid, vivid blue. Relative luminance 0.217; OKLCH L 60.9% C 0.178 H 266.3°. Best body text is #000000 at 5.35:1 contrast (WCAG AA passes).

Color values

HEX	#517AEC
RGB	rgb(81, 122, 236)
HSL	hsl(224, 80%, 62%)
HSV	hsv(224, 66%, 93%)
CMYK	cmyk(65.7%, 48.3%, 0%, 7.5%)
CIE-LAB	lab(53.73, 21.87, -61.88)
CIE-LCH	lch(53.73, 65.63, 289.46°)
OKLab	oklab(60.89% -0.0114 -0.1773)
OKLCH	oklch(60.89% 0.178 266.3)
XYZ	xyz(25.4880, 21.7221, 82.1902)
Luminance	0.2172 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517AEC #ECC351

analogous

#51C8EC #517AEC #7651EC

triadic

#517AEC #EC517A #7AEC51

tetradic

#517AEC #EC51C8 #ECC351 #51EC76

square

#517AEC #EC51C8 #ECC351 #51EC76

split-complementary

#517AEC #EC7651 #C8EC51

monochromatic

#133CAF #1A50E6 #517AEC #88A4F2 #BFCEF8

Accessibility & contrast

On white

3.93

#517AEC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.35

#517AEC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517AEC

5.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517AEC	#FFFFFF	#000000	##000000
##517AEC	1.00	3.93	5.35	5.35
#FFFFFF	3.93	1.00	21.00	21.00
#000000	5.35	21.00	1.00	1.00
##000000	5.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C88F0

Deuteranopia (green-blind)

#137AEA

Tritanopia (blue-blind)

#0095A8

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #517aec;
/* rgb */ color: rgb(81, 122, 236);
/* oklch */ color: oklch(60.9% 0.178 266.3);

Tailwind

colors: {
  custom: {
    50: '#919ff3',
    500: '#517aec',
    950: '#000000',
  },
}

SCSS

$custom: #517aec;
$custom-light: #919ff3;
$custom-dark: #000000;

JSON

{
  "hex": "#517aec",
  "rgb": {
    "r": 81,
    "g": 122,
    "b": 236
  },
  "hsl": {
    "h": 224.129,
    "s": 80.311,
    "l": 62.157
  },
  "oklch": {
    "l": 0.60892,
    "c": 0.17771,
    "h": 266.3
  },
  "luminance": 0.21725
}

Semantic roles & 50–950 ramp

primary

#517AEC

secondary

#E9DAB0

accent

#A509DD

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #517AEC

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

Preview Lab → · Contrast checker → · Palette generator →