#517CEC#517CEC

#517CEC is a mid, vivid blue. Relative luminance 0.222; OKLCH L 61.3% C 0.175 H 265.7°. Best body text is #000000 at 5.44:1 contrast (WCAG AA passes).

Color values

HEX	#517CEC
RGB	rgb(81, 124, 236)
HSL	hsl(223, 80%, 62%)
HSV	hsv(223, 66%, 93%)
CMYK	cmyk(65.7%, 47.5%, 0%, 7.5%)
CIE-LAB	lab(54.26, 20.64, -61.03)
CIE-LCH	lch(54.26, 64.42, 288.68°)
OKLab	oklab(61.29% -0.0132 -0.1748)
OKLCH	oklch(61.29% 0.175 265.7)
XYZ	xyz(25.7361, 22.2183, 82.2729)
Luminance	0.2222 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517CEC #ECC151

analogous

#51C9EC #517CEC #7451EC

triadic

#517CEC #EC517C #7CEC51

tetradic

#517CEC #EC51C9 #ECC151 #51EC74

square

#517CEC #EC51C9 #ECC151 #51EC74

split-complementary

#517CEC #EC7451 #C9EC51

monochromatic

#133FAF #1A52E6 #517CEC #88A6F2 #BFCFF8

Accessibility & contrast

On white

3.86

#517CEC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.44

#517CEC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517CEC

5.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517CEC	#FFFFFF	#000000	##000000
##517CEC	1.00	3.86	5.44	5.44
#FFFFFF	3.86	1.00	21.00	21.00
#000000	5.44	21.00	1.00	1.00
##000000	5.44	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4189F0

Deuteranopia (green-blind)

#1D7BEA

Tritanopia (blue-blind)

#0096A9

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #517cec;
/* rgb */ color: rgb(81, 124, 236);
/* oklch */ color: oklch(61.3% 0.175 265.7);

Tailwind

colors: {
  custom: {
    50: '#91a1f3',
    500: '#517cec',
    950: '#000000',
  },
}

SCSS

$custom: #517cec;
$custom-light: #91a1f3;
$custom-dark: #000000;

JSON

{
  "hex": "#517cec",
  "rgb": {
    "r": 81,
    "g": 124,
    "b": 236
  },
  "hsl": {
    "h": 223.355,
    "s": 80.311,
    "l": 62.157
  },
  "oklch": {
    "l": 0.61294,
    "c": 0.17532,
    "h": 265.7
  },
  "luminance": 0.22221
}

Semantic roles & 50–950 ramp

primary

#517CEC

secondary

#E9D9B0

accent

#A209DD

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #517CEC

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

Preview Lab → · Contrast checker → · Palette generator →