#517EEF#517EEF

#517EEF is a mid, vivid blue. Relative luminance 0.229; OKLCH L 61.9% C 0.177 H 265.3°. Best body text is #000000 at 5.58:1 contrast (WCAG AA passes).

Color values

HEX	#517EEF
RGB	rgb(81, 126, 239)
HSL	hsl(223, 83%, 63%)
HSV	hsv(223, 66%, 94%)
CMYK	cmyk(66.1%, 47.3%, 0%, 6.3%)
CIE-LAB	lab(54.97, 20.45, -61.56)
CIE-LCH	lch(54.97, 64.86, 288.37°)
OKLab	oklab(61.9% -0.0146 -0.1763)
OKLCH	oklch(61.9% 0.177 265.3)
XYZ	xyz(26.4288, 22.9005, 84.6721)
Luminance	0.2290 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517EEF #EFC251

analogous

#51CDEF #517EEF #7351EF

triadic

#517EEF #EF517E #7EEF51

tetradic

#517EEF #EF51CD #EFC251 #51EF73

square

#517EEF #EF51CD #EFC251 #51EF73

split-complementary

#517EEF #EF7351 #CDEF51

monochromatic

#113FB5 #1954EA #517EEF #89A8F4 #C1D1F9

Accessibility & contrast

On white

3.76

#517EEF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.58

#517EEF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517EEF

5.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517EEF	#FFFFFF	#000000	##000000
##517EEF	1.00	3.76	5.58	5.58
#FFFFFF	3.76	1.00	21.00	21.00
#000000	5.58	21.00	1.00	1.00
##000000	5.58	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#438BF3

Deuteranopia (green-blind)

#1E7DED

Tritanopia (blue-blind)

#0098AB

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #517eef;
/* rgb */ color: rgb(81, 126, 239);
/* oklch */ color: oklch(61.9% 0.177 265.3);

Tailwind

colors: {
  custom: {
    50: '#92a2f5',
    500: '#517eef',
    950: '#000000',
  },
}

SCSS

$custom: #517eef;
$custom-light: #92a2f5;
$custom-dark: #000000;

JSON

{
  "hex": "#517eef",
  "rgb": {
    "r": 81,
    "g": 126,
    "b": 239
  },
  "hsl": {
    "h": 222.911,
    "s": 83.158,
    "l": 62.745
  },
  "oklch": {
    "l": 0.61896,
    "c": 0.17695,
    "h": 265.3
  },
  "luminance": 0.22903
}

Semantic roles & 50–950 ramp

primary

#517EEF

secondary

#EADAB1

accent

#A206E0

background

#F9F9FF

surface

#F2F2FE

border

#CCCCD6

text

#0E0F17

muted

#7E7E85

Preview Lab

Preview with #517EEF

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

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