#517BE8#517BE8

#517BE8 is a mid, vivid blue. Relative luminance 0.217; OKLCH L 60.8% C 0.171 H 265.7°. Best body text is #000000 at 5.35:1 contrast (WCAG AA passes).

Color values

HEX	#517BE8
RGB	rgb(81, 123, 232)
HSL	hsl(223, 77%, 61%)
HSV	hsv(223, 65%, 91%)
CMYK	cmyk(65.1%, 47%, 0%, 9%)
CIE-LAB	lab(53.75, 19.87, -59.61)
CIE-LCH	lch(53.75, 62.84, 288.44°)
OKLab	oklab(60.83% -0.0128 -0.1707)
OKLCH	oklch(60.83% 0.171 265.7)
XYZ	xyz(25.0367, 21.7391, 79.2049)
Luminance	0.2174 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517BE8 #E8BE51

analogous

#51C7E8 #517BE8 #7351E8

triadic

#517BE8 #E8517B #7BE851

tetradic

#517BE8 #E851C7 #E8BE51 #51E873

square

#517BE8 #E851C7 #E8BE51 #51E873

split-complementary

#517BE8 #E87351 #C7E851

monochromatic

#163FA8 #1D53DE #517BE8 #87A4EF #BDCDF6

Accessibility & contrast

On white

3.93

#517BE8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.35

#517BE8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517BE8

5.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517BE8	#FFFFFF	#000000	##000000
##517BE8	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)

#4388EC

Deuteranopia (green-blind)

#237AE6

Tritanopia (blue-blind)

#0094A6

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #517be8;
/* rgb */ color: rgb(81, 123, 232);
/* oklch */ color: oklch(60.8% 0.171 265.7);

Tailwind

colors: {
  custom: {
    50: '#90a0f0',
    500: '#517be8',
    950: '#000000',
  },
}

SCSS

$custom: #517be8;
$custom-light: #90a0f0;
$custom-dark: #000000;

JSON

{
  "hex": "#517be8",
  "rgb": {
    "r": 81,
    "g": 123,
    "b": 232
  },
  "hsl": {
    "h": 223.311,
    "s": 76.65,
    "l": 61.373
  },
  "oklch": {
    "l": 0.60827,
    "c": 0.17115,
    "h": 265.7
  },
  "luminance": 0.21741
}

Semantic roles & 50–950 ramp

primary

#517BE8

secondary

#E7D7AE

accent

#A00DD9

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #517BE8

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

Preview Lab → · Contrast checker → · Palette generator →