#518BDF#518BDF

#518BDF is a light, vivid blue. Relative luminance 0.255; OKLCH L 63.6% C 0.141 H 257.7°. Best body text is #000000 at 6.11:1 contrast (WCAG AA passes).

Color values

HEX	#518BDF
RGB	rgb(81, 139, 223)
HSL	hsl(215, 69%, 60%)
HSV	hsv(215, 64%, 87%)
CMYK	cmyk(63.7%, 37.7%, 0%, 12.5%)
CIE-LAB	lab(57.60, 7.10, -48.44)
CIE-LCH	lch(57.60, 48.96, 278.33°)
OKLab	oklab(63.63% -0.03 -0.1376)
OKLCH	oklch(63.63% 0.141 257.7)
XYZ	xyz(25.9405, 25.5398, 73.3603)
Luminance	0.2554 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#518BDF #DFA551

analogous

#51D2DF #518BDF #5E51DF

triadic

#518BDF #DF518B #8BDF51

tetradic

#518BDF #DF51D2 #DFA551 #51DF5E

square

#518BDF #DF51D2 #DFA551 #51DF5E

split-complementary

#518BDF #DF5E51 #D2DF51

monochromatic

#1C4F99 #266ACD #518BDF #85ADE9 #B8D0F2

Accessibility & contrast

On white

3.44

#518BDF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.11

#518BDF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #518BDF

6.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##518BDF	#FFFFFF	#000000	##000000
##518BDF	1.00	3.44	6.11	6.11
#FFFFFF	3.44	1.00	21.00	21.00
#000000	6.11	21.00	1.00	1.00
##000000	6.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6692E2

Deuteranopia (green-blind)

#5284DD

Tritanopia (blue-blind)

#009EAA

Achromatopsia (no color)

#8A8A8A

Design tokens & code

CSS

--color: #518bdf;
/* rgb */ color: rgb(81, 139, 223);
/* oklch */ color: oklch(63.6% 0.141 257.7);

Tailwind

colors: {
  custom: {
    50: '#8face9',
    500: '#518bdf',
    950: '#000000',
  },
}

SCSS

$custom: #518bdf;
$custom-light: #8face9;
$custom-dark: #000000;

JSON

{
  "hex": "#518bdf",
  "rgb": {
    "r": 81,
    "g": 139,
    "b": 223
  },
  "hsl": {
    "h": 215.493,
    "s": 68.932,
    "l": 59.608
  },
  "oklch": {
    "l": 0.63631,
    "c": 0.14087,
    "h": 257.7
  },
  "luminance": 0.25542
}

Semantic roles & 50–950 ramp

primary

#518BDF

secondary

#E1CBAA

accent

#A43CEC

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0D1016

muted

#7E7F84

Preview Lab

Preview with #518BDF

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

Preview Lab → · Contrast checker → · Palette generator →