#517DE1#517DE1

#517DE1 is a mid, vivid blue. Relative luminance 0.219; OKLCH L 60.8% C 0.159 H 264.3°. Best body text is #000000 at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#517DE1
RGB	rgb(81, 125, 225)
HSL	hsl(222, 71%, 60%)
HSV	hsv(222, 64%, 88%)
CMYK	cmyk(64%, 44.4%, 0%, 11.8%)
CIE-LAB	lab(53.87, 16.24, -55.50)
CIE-LCH	lch(53.87, 57.83, 286.31°)
OKLab	oklab(60.78% -0.0158 -0.1585)
OKLCH	oklch(60.78% 0.159 264.3)
XYZ	xyz(24.3128, 21.8505, 74.1559)
Luminance	0.2185 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517DE1 #E1B551

analogous

#51C5E1 #517DE1 #6D51E1

triadic

#517DE1 #E1517D #7DE151

tetradic

#517DE1 #E151C5 #E1B551 #51E16D

square

#517DE1 #E151C5 #E1B551 #51E16D

split-complementary

#517DE1 #E16D51 #C5E151

monochromatic

#1B439D #2459D1 #517DE1 #85A4EA #B9CBF3

Accessibility & contrast

On white

3.91

#517DE1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.37

#517DE1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517DE1

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517DE1	#FFFFFF	#000000	##000000
##517DE1	1.00	3.91	5.37	5.37
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.37	21.00	1.00	1.00
##000000	5.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D88E5

Deuteranopia (green-blind)

#357BDF

Tritanopia (blue-blind)

#0094A4

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #517de1;
/* rgb */ color: rgb(81, 125, 225);
/* oklch */ color: oklch(60.8% 0.159 264.3);

Tailwind

colors: {
  custom: {
    50: '#8fa2eb',
    500: '#517de1',
    950: '#000000',
  },
}

SCSS

$custom: #517de1;
$custom-light: #8fa2eb;
$custom-dark: #000000;

JSON

{
  "hex": "#517de1",
  "rgb": {
    "r": 81,
    "g": 125,
    "b": 225
  },
  "hsl": {
    "h": 221.667,
    "s": 70.588,
    "l": 60
  },
  "oklch": {
    "l": 0.60784,
    "c": 0.15933,
    "h": 264.3
  },
  "luminance": 0.21853
}

Semantic roles & 50–950 ramp

primary

#517DE1

secondary

#E3D2AB

accent

#B73AED

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0F16

muted

#7E7E84

Preview Lab

Preview with #517DE1

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

Preview Lab → · Contrast checker → · Palette generator →