#5187D9#5187D9

#5187D9 is a light, vivid blue. Relative luminance 0.241; OKLCH L 62.4% C 0.137 H 258.5°. Best body text is #000000 at 5.82:1 contrast (WCAG AA passes).

Color values

HEX	#5187D9
RGB	rgb(81, 135, 217)
HSL	hsl(216, 64%, 58%)
HSV	hsv(216, 63%, 85%)
CMYK	cmyk(62.7%, 37.8%, 0%, 14.9%)
CIE-LAB	lab(56.17, 7.45, -47.34)
CIE-LCH	lch(56.17, 47.92, 278.95°)
OKLab	oklab(62.42% -0.0273 -0.1345)
OKLCH	oklch(62.42% 0.137 258.5)
XYZ	xyz(24.5772, 24.0847, 68.9858)
Luminance	0.2409 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5187D9 #D9A351

analogous

#51CBD9 #5187D9 #5F51D9

triadic

#5187D9 #D95187 #87D951

tetradic

#5187D9 #D951CB #D9A351 #51D95F

square

#5187D9 #D951CB #D9A351 #51D95F

split-complementary

#5187D9 #D95F51 #CBD951

monochromatic

#1F4C90 #2A67C2 #5187D9 #83AAE4 #B5CCEF

Accessibility & contrast

On white

3.61

#5187D9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.82

#5187D9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5187D9

5.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5187D9	#FFFFFF	#000000	##000000
##5187D9	1.00	3.61	5.82	5.82
#FFFFFF	3.61	1.00	21.00	21.00
#000000	5.82	21.00	1.00	1.00
##000000	5.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#638EDC

Deuteranopia (green-blind)

#5081D7

Tritanopia (blue-blind)

#009AA5

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #5187d9;
/* rgb */ color: rgb(81, 135, 217);
/* oklch */ color: oklch(62.4% 0.137 258.5);

Tailwind

colors: {
  custom: {
    50: '#8ea9e5',
    500: '#5187d9',
    950: '#000000',
  },
}

SCSS

$custom: #5187d9;
$custom-light: #8ea9e5;
$custom-dark: #000000;

JSON

{
  "hex": "#5187d9",
  "rgb": {
    "r": 81,
    "g": 135,
    "b": 217
  },
  "hsl": {
    "h": 216.176,
    "s": 64.151,
    "l": 58.431
  },
  "oklch": {
    "l": 0.62422,
    "c": 0.13722,
    "h": 258.5
  },
  "luminance": 0.24087
}

Semantic roles & 50–950 ramp

primary

#5187D9

secondary

#DEC8A8

accent

#A541E7

background

#F9FAFE

surface

#F2F4FC

border

#CCCED5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #5187D9

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

Preview Lab → · Contrast checker → · Palette generator →