#5183CB#5183CB

#5183CB is a mid, vivid blue. Relative luminance 0.223; OKLCH L 60.8% C 0.123 H 257.6°. Best body text is #000000 at 5.46:1 contrast (WCAG AA passes).

Color values

HEX	#5183CB
RGB	rgb(81, 131, 203)
HSL	hsl(215, 54%, 56%)
HSV	hsv(215, 60%, 80%)
CMYK	cmyk(60.1%, 35.5%, 0%, 20.4%)
CIE-LAB	lab(54.34, 5.15, -42.35)
CIE-LCH	lch(54.34, 42.66, 276.93°)
OKLab	oklab(60.76% -0.0265 -0.1199)
OKLCH	oklch(60.76% 0.123 257.6)
XYZ	xyz(22.2853, 22.2917, 59.6167)
Luminance	0.2229 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5183CB #CB9951

analogous

#51C0CB #5183CB #5C51CB

triadic

#5183CB #CB5183 #83CB51

tetradic

#5183CB #CB51C0 #CB9951 #51CB5C

square

#5183CB #CB51C0 #CB9951 #51CB5C

split-complementary

#5183CB #CB5C51 #C0CB51

monochromatic

#25497C #3365AC #5183CB #80A5D9 #AFC6E7

Accessibility & contrast

On white

3.85

#5183CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.46

#5183CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5183CB

5.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5183CB	#FFFFFF	#000000	##000000
##5183CB	1.00	3.85	5.46	5.46
#FFFFFF	3.85	1.00	21.00	21.00
#000000	5.46	21.00	1.00	1.00
##000000	5.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6588CE

Deuteranopia (green-blind)

#547DCA

Tritanopia (blue-blind)

#00939D

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #5183cb;
/* rgb */ color: rgb(81, 131, 203);
/* oklch */ color: oklch(60.8% 0.123 257.6);

Tailwind

colors: {
  custom: {
    50: '#8ca6db',
    500: '#5183cb',
    950: '#000000',
  },
}

SCSS

$custom: #5183cb;
$custom-light: #8ca6db;
$custom-dark: #000000;

JSON

{
  "hex": "#5183cb",
  "rgb": {
    "r": 81,
    "g": 131,
    "b": 203
  },
  "hsl": {
    "h": 215.41,
    "s": 53.982,
    "l": 55.686
  },
  "oklch": {
    "l": 0.60758,
    "c": 0.12283,
    "h": 257.6
  },
  "luminance": 0.22294
}

Semantic roles & 50–950 ramp

primary

#5183CB

secondary

#D5C0A3

accent

#A14ADD

background

#F9FAFD

surface

#F1F4FB

border

#CBCED4

text

#0D0F15

muted

#7E7F83

Preview Lab

Preview with #5183CB

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

Preview Lab → · Contrast checker → · Palette generator →