#517DE5#517DE5

#517DE5 is a mid, vivid blue. Relative luminance 0.221; OKLCH L 61.0% C 0.165 H 264.7°. Best body text is #000000 at 5.41:1 contrast (WCAG AA passes).

Color values

HEX	#517DE5
RGB	rgb(81, 125, 229)
HSL	hsl(222, 74%, 61%)
HSV	hsv(222, 65%, 90%)
CMYK	cmyk(64.6%, 45.4%, 0%, 10.2%)
CIE-LAB	lab(54.10, 17.61, -57.37)
CIE-LCH	lch(54.10, 60.01, 287.07°)
OKLab	oklab(61.04% -0.0151 -0.164)
OKLCH	oklch(61.04% 0.165 264.7)
XYZ	xyz(24.8649, 22.0714, 77.0634)
Luminance	0.2207 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517DE5 #E5B951

analogous

#51C7E5 #517DE5 #6F51E5

triadic

#517DE5 #E5517D #7DE551

tetradic

#517DE5 #E551C7 #E5B951 #51E56F

square

#517DE5 #E551C7 #E5B951 #51E56F

split-complementary

#517DE5 #E56F51 #C7E551

monochromatic

#1842A3 #2057D8 #517DE5 #86A5ED #BBCDF5

Accessibility & contrast

On white

3.88

#517DE5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.41

#517DE5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517DE5

5.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517DE5	#FFFFFF	#000000	##000000
##517DE5	1.00	3.88	5.41	5.41
#FFFFFF	3.88	1.00	21.00	21.00
#000000	5.41	21.00	1.00	1.00
##000000	5.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A89E9

Deuteranopia (green-blind)

#2F7BE3

Tritanopia (blue-blind)

#0095A6

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #517de5;
/* rgb */ color: rgb(81, 125, 229);
/* oklch */ color: oklch(61.0% 0.165 264.7);

Tailwind

colors: {
  custom: {
    50: '#90a2ee',
    500: '#517de5',
    950: '#000000',
  },
}

SCSS

$custom: #517de5;
$custom-light: #90a2ee;
$custom-dark: #000000;

JSON

{
  "hex": "#517de5",
  "rgb": {
    "r": 81,
    "g": 125,
    "b": 229
  },
  "hsl": {
    "h": 222.162,
    "s": 74,
    "l": 60.784
  },
  "oklch": {
    "l": 0.61039,
    "c": 0.16473,
    "h": 264.7
  },
  "luminance": 0.22074
}

Semantic roles & 50–950 ramp

primary

#517DE5

secondary

#E5D4AD

accent

#9B0FD6

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0F16

muted

#7E7E84

Preview Lab

Preview with #517DE5

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

Preview Lab → · Contrast checker → · Palette generator →