#517FDE#517FDE

#517FDE is a mid, vivid blue. Relative luminance 0.222; OKLCH L 61.0% C 0.153 H 263.2°. Best body text is #000000 at 5.44:1 contrast (WCAG AA passes).

Color values

HEX	#517FDE
RGB	rgb(81, 127, 222)
HSL	hsl(220, 68%, 59%)
HSV	hsv(220, 64%, 87%)
CMYK	cmyk(63.5%, 42.8%, 0%, 12.9%)
CIE-LAB	lab(54.24, 13.99, -53.23)
CIE-LCH	lch(54.24, 55.03, 284.73°)
OKLab	oklab(61.01% -0.0182 -0.1518)
OKLCH	oklch(61.01% 0.153 263.2)
XYZ	xyz(24.1629, 22.1998, 72.1047)
Luminance	0.2220 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517FDE #DEB051

analogous

#51C5DE #517FDE #6A51DE

triadic

#517FDE #DE517F #7FDE51

tetradic

#517FDE #DE51C5 #DEB051 #51DE6A

square

#517FDE #DE51C5 #DEB051 #51DE6A

split-complementary

#517FDE #DE6A51 #C5DE51

monochromatic

#1D4598 #275CCB #517FDE #84A5E8 #B8CBF2

Accessibility & contrast

On white

3.86

#517FDE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.44

#517FDE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517FDE

5.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517FDE	#FFFFFF	#000000	##000000
##517FDE	1.00	3.86	5.44	5.44
#FFFFFF	3.86	1.00	21.00	21.00
#000000	5.44	21.00	1.00	1.00
##000000	5.44	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5389E2

Deuteranopia (green-blind)

#3D7CDC

Tritanopia (blue-blind)

#0095A4

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #517fde;
/* rgb */ color: rgb(81, 127, 222);
/* oklch */ color: oklch(61.0% 0.153 263.2);

Tailwind

colors: {
  custom: {
    50: '#8fa3e9',
    500: '#517fde',
    950: '#000000',
  },
}

SCSS

$custom: #517fde;
$custom-light: #8fa3e9;
$custom-dark: #000000;

JSON

{
  "hex": "#517fde",
  "rgb": {
    "r": 81,
    "g": 127,
    "b": 222
  },
  "hsl": {
    "h": 220.426,
    "s": 68.116,
    "l": 59.412
  },
  "oklch": {
    "l": 0.61013,
    "c": 0.15293,
    "h": 263.2
  },
  "luminance": 0.22202
}

Semantic roles & 50–950 ramp

primary

#517FDE

secondary

#E1CFAA

accent

#B23DEB

background

#F9FAFE

surface

#F2F3FD

border

#CCCDD5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #517FDE

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

Preview Lab → · Contrast checker → · Palette generator →