#5187DD#5187DD

#5187DD is a light, vivid blue. Relative luminance 0.243; OKLCH L 62.7% C 0.143 H 259.3°. Best body text is #000000 at 5.86:1 contrast (WCAG AA passes).

Color values

HEX	#5187DD
RGB	rgb(81, 135, 221)
HSL	hsl(217, 67%, 59%)
HSV	hsv(217, 63%, 87%)
CMYK	cmyk(63.3%, 38.9%, 0%, 13.3%)
CIE-LAB	lab(56.38, 8.81, -49.25)
CIE-LCH	lch(56.38, 50.03, 280.14°)
OKLab	oklab(62.65% -0.0264 -0.1401)
OKLCH	oklch(62.65% 0.143 259.3)
XYZ	xyz(25.1038, 24.2954, 71.7591)
Luminance	0.2430 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5187DD #DDA751

analogous

#51CDDD #5187DD #6151DD

triadic

#5187DD #DD5187 #87DD51

tetradic

#5187DD #DD51CD #DDA751 #51DD61

square

#5187DD #DD51CD #DDA751 #51DD61

split-complementary

#5187DD #DD6151 #CDDD51

monochromatic

#1D4C96 #2766C9 #5187DD #84AAE7 #B7CEF1

Accessibility & contrast

On white

3.58

#5187DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.86

#5187DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5187DD

5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5187DD	#FFFFFF	#000000	##000000
##5187DD	1.00	3.58	5.86	5.86
#FFFFFF	3.58	1.00	21.00	21.00
#000000	5.86	21.00	1.00	1.00
##000000	5.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#618EE0

Deuteranopia (green-blind)

#4D81DB

Tritanopia (blue-blind)

#009BA7

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #5187dd;
/* rgb */ color: rgb(81, 135, 221);
/* oklch */ color: oklch(62.7% 0.143 259.3);

Tailwind

colors: {
  custom: {
    50: '#8ea9e8',
    500: '#5187dd',
    950: '#000000',
  },
}

SCSS

$custom: #5187dd;
$custom-light: #8ea9e8;
$custom-dark: #000000;

JSON

{
  "hex": "#5187dd",
  "rgb": {
    "r": 81,
    "g": 135,
    "b": 221
  },
  "hsl": {
    "h": 216.857,
    "s": 67.308,
    "l": 59.216
  },
  "oklch": {
    "l": 0.62653,
    "c": 0.14254,
    "h": 259.3
  },
  "luminance": 0.24298
}

Semantic roles & 50–950 ramp

primary

#5187DD

secondary

#E0CBAA

accent

#A83EEA

background

#F9FAFE

surface

#F2F4FC

border

#CCCED5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #5187DD

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

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