#517CE5#517CE5

#517CE5 is a mid, vivid blue. Relative luminance 0.218; OKLCH L 60.8% C 0.166 H 265.1°. Best body text is #000000 at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#517CE5
RGB	rgb(81, 124, 229)
HSL	hsl(223, 74%, 61%)
HSV	hsv(223, 65%, 90%)
CMYK	cmyk(64.6%, 45.9%, 0%, 10.2%)
CIE-LAB	lab(53.84, 18.23, -57.80)
CIE-LCH	lch(53.84, 60.60, 287.50°)
OKLab	oklab(60.83% -0.0142 -0.1653)
OKLCH	oklch(60.83% 0.166 265.1)
XYZ	xyz(24.7389, 21.8195, 77.0214)
Luminance	0.2182 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517CE5 #E5BA51

analogous

#51C6E5 #517CE5 #7051E5

triadic

#517CE5 #E5517C #7CE551

tetradic

#517CE5 #E551C6 #E5BA51 #51E570

square

#517CE5 #E551C6 #E5BA51 #51E570

split-complementary

#517CE5 #E57051 #C6E551

monochromatic

#1841A3 #2056D8 #517CE5 #86A4ED #BBCCF5

Accessibility & contrast

On white

3.91

#517CE5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.36

#517CE5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517CE5

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517CE5	#FFFFFF	#000000	##000000
##517CE5	1.00	3.91	5.36	5.36
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.36	21.00	1.00	1.00
##000000	5.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4888E9

Deuteranopia (green-blind)

#2C7AE3

Tritanopia (blue-blind)

#0094A5

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #517ce5;
/* rgb */ color: rgb(81, 124, 229);
/* oklch */ color: oklch(60.8% 0.166 265.1);

Tailwind

colors: {
  custom: {
    50: '#90a1ee',
    500: '#517ce5',
    950: '#000000',
  },
}

SCSS

$custom: #517ce5;
$custom-light: #90a1ee;
$custom-dark: #000000;

JSON

{
  "hex": "#517ce5",
  "rgb": {
    "r": 81,
    "g": 124,
    "b": 229
  },
  "hsl": {
    "h": 222.568,
    "s": 74,
    "l": 60.784
  },
  "oklch": {
    "l": 0.60834,
    "c": 0.16592,
    "h": 265.1
  },
  "luminance": 0.21822
}

Semantic roles & 50–950 ramp

primary

#517CE5

secondary

#E5D5AD

accent

#9C0FD6

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #517CE5

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

Preview Lab → · Contrast checker → · Palette generator →