#5183CC#5183CC

#5183CC is a mid, vivid blue. Relative luminance 0.223; OKLCH L 60.8% C 0.124 H 257.8°. Best body text is #000000 at 5.47:1 contrast (WCAG AA passes).

Color values

HEX	#5183CC
RGB	rgb(81, 131, 204)
HSL	hsl(216, 55%, 56%)
HSV	hsv(216, 60%, 80%)
CMYK	cmyk(60.3%, 35.8%, 0%, 20%)
CIE-LAB	lab(54.39, 5.48, -42.84)
CIE-LCH	lch(54.39, 43.19, 277.29°)
OKLab	oklab(60.81% -0.0262 -0.1214)
OKLCH	oklch(60.81% 0.124 257.8)
XYZ	xyz(22.4049, 22.3396, 60.2463)
Luminance	0.2234 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5183CC #CC9A51

analogous

#51C0CC #5183CC #5C51CC

triadic

#5183CC #CC5183 #83CC51

tetradic

#5183CC #CC51C0 #CC9A51 #51CC5C

square

#5183CC #CC51C0 #CC9A51 #51CC5C

split-complementary

#5183CC #CC5C51 #C0CC51

monochromatic

#25497E #3364AD #5183CC #80A5DA #B0C6E8

Accessibility & contrast

On white

3.84

#5183CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.47

#5183CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5183CC

5.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5183CC	#FFFFFF	#000000	##000000
##5183CC	1.00	3.84	5.47	5.47
#FFFFFF	3.84	1.00	21.00	21.00
#000000	5.47	21.00	1.00	1.00
##000000	5.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6488CF

Deuteranopia (green-blind)

#547DCA

Tritanopia (blue-blind)

#00939E

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #5183cc;
/* rgb */ color: rgb(81, 131, 204);
/* oklch */ color: oklch(60.8% 0.124 257.8);

Tailwind

colors: {
  custom: {
    50: '#8ca6dc',
    500: '#5183cc',
    950: '#000000',
  },
}

SCSS

$custom: #5183cc;
$custom-light: #8ca6dc;
$custom-dark: #000000;

JSON

{
  "hex": "#5183cc",
  "rgb": {
    "r": 81,
    "g": 131,
    "b": 204
  },
  "hsl": {
    "h": 215.61,
    "s": 54.667,
    "l": 55.882
  },
  "oklch": {
    "l": 0.60814,
    "c": 0.12416,
    "h": 257.8
  },
  "luminance": 0.22342
}

Semantic roles & 50–950 ramp

primary

#5183CC

secondary

#D6C1A3

accent

#A24ADE

background

#F9FAFD

surface

#F1F4FB

border

#CBCED4

text

#0D0F15

muted

#7E7F83

Preview Lab

Preview with #5183CC

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

Preview Lab → · Contrast checker → · Palette generator →