#518CDD#518CDD

#518CDD is a light, vivid cyan. Relative luminance 0.257; OKLCH L 63.7% C 0.137 H 256.7°. Best body text is #000000 at 6.15:1 contrast (WCAG AA passes).

Color values

HEX	#518CDD
RGB	rgb(81, 140, 221)
HSL	hsl(215, 67%, 59%)
HSV	hsv(215, 63%, 87%)
CMYK	cmyk(63.3%, 36.7%, 0%, 13.3%)
CIE-LAB	lab(57.77, 5.83, -47.04)
CIE-LCH	lch(57.77, 47.40, 277.06°)
OKLab	oklab(63.74% -0.0314 -0.1335)
OKLCH	oklch(63.74% 0.137 256.7)
XYZ	xyz(25.8179, 25.7235, 71.9971)
Luminance	0.2573 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#518CDD #DDA251

analogous

#51D2DD #518CDD #5C51DD

triadic

#518CDD #DD518C #8CDD51

tetradic

#518CDD #DD51D2 #DDA251 #51DD5C

square

#518CDD #DD51D2 #DDA251 #51DD5C

split-complementary

#518CDD #DD5C51 #D2DD51

monochromatic

#1D5096 #276CC9 #518CDD #84AEE7 #B7D0F1

Accessibility & contrast

On white

3.42

#518CDD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.15

#518CDD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #518CDD

6.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##518CDD	#FFFFFF	#000000	##000000
##518CDD	1.00	3.42	6.15	6.15
#FFFFFF	3.42	1.00	21.00	21.00
#000000	6.15	21.00	1.00	1.00
##000000	6.15	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6992E0

Deuteranopia (green-blind)

#5585DB

Tritanopia (blue-blind)

#009FAA

Achromatopsia (no color)

#8B8B8B

Design tokens & code

CSS

--color: #518cdd;
/* rgb */ color: rgb(81, 140, 221);
/* oklch */ color: oklch(63.7% 0.137 256.7);

Tailwind

colors: {
  custom: {
    50: '#8eade8',
    500: '#518cdd',
    950: '#000000',
  },
}

SCSS

$custom: #518cdd;
$custom-light: #8eade8;
$custom-dark: #000000;

JSON

{
  "hex": "#518cdd",
  "rgb": {
    "r": 81,
    "g": 140,
    "b": 221
  },
  "hsl": {
    "h": 214.714,
    "s": 67.308,
    "l": 59.216
  },
  "oklch": {
    "l": 0.63735,
    "c": 0.1372,
    "h": 256.7
  },
  "luminance": 0.25726
}

Semantic roles & 50–950 ramp

primary

#518CDD

secondary

#E0C9AA

accent

#A13EEA

background

#F9FAFE

surface

#F2F4FC

border

#CCCED5

text

#0D1016

muted

#7E7F84

Preview Lab

Preview with #518CDD

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

Preview Lab → · Contrast checker → · Palette generator →