#517DE0#517DE0

#517DE0 is a mid, vivid blue. Relative luminance 0.218; OKLCH L 60.7% C 0.158 H 264.2°. Best body text is #000000 at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#517DE0
RGB	rgb(81, 125, 224)
HSL	hsl(222, 70%, 60%)
HSV	hsv(222, 64%, 88%)
CMYK	cmyk(63.8%, 44.2%, 0%, 12.2%)
CIE-LAB	lab(53.81, 15.90, -55.03)
CIE-LCH	lch(53.81, 57.28, 286.11°)
OKLab	oklab(60.72% -0.0159 -0.1572)
OKLCH	oklch(60.72% 0.158 264.2)
XYZ	xyz(24.1768, 21.7961, 73.4395)
Luminance	0.2180 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517DE0 #E0B451

analogous

#51C5E0 #517DE0 #6C51E0

triadic

#517DE0 #E0517D #7DE051

tetradic

#517DE0 #E051C5 #E0B451 #51E06C

square

#517DE0 #E051C5 #E0B451 #51E06C

split-complementary

#517DE0 #E06C51 #C5E051

monochromatic

#1C439B #2559CF #517DE0 #85A4E9 #B9CBF3

Accessibility & contrast

On white

3.92

#517DE0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.36

#517DE0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517DE0

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517DE0	#FFFFFF	#000000	##000000
##517DE0	1.00	3.92	5.36	5.36
#FFFFFF	3.92	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)

#4E88E4

Deuteranopia (green-blind)

#367ADE

Tritanopia (blue-blind)

#0094A3

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #517de0;
/* rgb */ color: rgb(81, 125, 224);
/* oklch */ color: oklch(60.7% 0.158 264.2);

Tailwind

colors: {
  custom: {
    50: '#8fa2ea',
    500: '#517de0',
    950: '#000000',
  },
}

SCSS

$custom: #517de0;
$custom-light: #8fa2ea;
$custom-dark: #000000;

JSON

{
  "hex": "#517de0",
  "rgb": {
    "r": 81,
    "g": 125,
    "b": 224
  },
  "hsl": {
    "h": 221.538,
    "s": 69.756,
    "l": 59.804
  },
  "oklch": {
    "l": 0.6072,
    "c": 0.15798,
    "h": 264.2
  },
  "luminance": 0.21798
}

Semantic roles & 50–950 ramp

primary

#517DE0

secondary

#E2D1AB

accent

#B63BED

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0F16

muted

#7E7E84

Preview Lab

Preview with #517DE0

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

Preview Lab → · Contrast checker → · Palette generator →