#5183D0#5183D0

#5183D0 is a mid, vivid blue. Relative luminance 0.225; OKLCH L 61.0% C 0.130 H 258.8°. Best body text is #000000 at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#5183D0
RGB	rgb(81, 131, 208)
HSL	hsl(216, 57%, 57%)
HSV	hsv(216, 61%, 82%)
CMYK	cmyk(61.1%, 37%, 0%, 18.4%)
CIE-LAB	lab(54.59, 6.82, -44.78)
CIE-LCH	lch(54.59, 45.30, 278.66°)
OKLab	oklab(61.04% -0.0253 -0.127)
OKLCH	oklch(61.04% 0.13 258.8)
XYZ	xyz(22.8908, 22.5339, 62.8054)
Luminance	0.2254 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5183D0 #D09E51

analogous

#51C3D0 #5183D0 #5F51D0

triadic

#5183D0 #D05183 #83D051

tetradic

#5183D0 #D051C3 #D09E51 #51D05F

square

#5183D0 #D051C3 #D09E51 #51D05F

split-complementary

#5183D0 #D05F51 #C3D051

monochromatic

#234983 #3064B3 #5183D0 #81A5DD #B1C8EA

Accessibility & contrast

On white

3.81

#5183D0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.51

#5183D0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5183D0

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5183D0	#FFFFFF	#000000	##000000
##5183D0	1.00	3.81	5.51	5.51
#FFFFFF	3.81	1.00	21.00	21.00
#000000	5.51	21.00	1.00	1.00
##000000	5.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6289D3

Deuteranopia (green-blind)

#517DCE

Tritanopia (blue-blind)

#00949F

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #5183d0;
/* rgb */ color: rgb(81, 131, 208);
/* oklch */ color: oklch(61.0% 0.130 258.8);

Tailwind

colors: {
  custom: {
    50: '#8ca6df',
    500: '#5183d0',
    950: '#000000',
  },
}

SCSS

$custom: #5183d0;
$custom-light: #8ca6df;
$custom-dark: #000000;

JSON

{
  "hex": "#5183d0",
  "rgb": {
    "r": 81,
    "g": 131,
    "b": 208
  },
  "hsl": {
    "h": 216.378,
    "s": 57.466,
    "l": 56.667
  },
  "oklch": {
    "l": 0.61039,
    "c": 0.12952,
    "h": 258.8
  },
  "luminance": 0.22536
}

Semantic roles & 50–950 ramp

primary

#5183D0

secondary

#D8C4A4

accent

#A447E1

background

#F9FAFD

surface

#F1F4FB

border

#CBCED4

text

#0D0F15

muted

#7E7F83

Preview Lab

Preview with #5183D0

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

Preview Lab → · Contrast checker → · Palette generator →