#5183FF#5183FF

#5183FF is a light, vivid blue. Relative luminance 0.252; OKLCH L 64.0% C 0.192 H 264.9°. Best body text is #000000 at 6.04:1 contrast (WCAG AA passes).

Color values

HEX	#5183FF
RGB	rgb(81, 131, 255)
HSL	hsl(223, 100%, 66%)
HSV	hsv(223, 68%, 100%)
CMYK	cmyk(68.2%, 48.6%, 0%, 0%)
CIE-LAB	lab(57.27, 22.92, -66.71)
CIE-LCH	lch(57.27, 70.53, 288.96°)
OKLab	oklab(63.97% -0.017 -0.1914)
OKLCH	oklch(63.97% 0.192 264.9)
XYZ	xyz(29.5533, 25.1989, 97.8947)
Luminance	0.2520 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5183FF #FFCD51

analogous

#51DAFF #5183FF #7651FF

triadic

#5183FF #FF5183 #83FF51

tetradic

#5183FF #FF51DA #FFCD51 #51FF76

square

#5183FF #FF51DA #FFCD51 #51FF76

split-complementary

#5183FF #FF7651 #DAFF51

monochromatic

#003DD6 #1457FF #5183FF #8EAFFF #CBDAFF

Accessibility & contrast

On white

3.48

#5183FF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.04

#5183FF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5183FF

6.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5183FF	#FFFFFF	#000000	##000000
##5183FF	1.00	3.48	6.04	6.04
#FFFFFF	3.48	1.00	21.00	21.00
#000000	6.04	21.00	1.00	1.00
##000000	6.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D92FF

Deuteranopia (green-blind)

#0082FC

Tritanopia (blue-blind)

#00A0B5

Achromatopsia (no color)

#898989

Design tokens & code

CSS

--color: #5183ff;
/* rgb */ color: rgb(81, 131, 255);
/* oklch */ color: oklch(64.0% 0.192 264.9);

Tailwind

colors: {
  custom: {
    50: '#94a6ff',
    500: '#5183ff',
    950: '#000000',
  },
}

SCSS

$custom: #5183ff;
$custom-light: #94a6ff;
$custom-dark: #000000;

JSON

{
  "hex": "#5183ff",
  "rgb": {
    "r": 81,
    "g": 131,
    "b": 255
  },
  "hsl": {
    "h": 222.759,
    "s": 100,
    "l": 65.882
  },
  "oklch": {
    "l": 0.63967,
    "c": 0.19217,
    "h": 264.9
  },
  "luminance": 0.25202
}

Semantic roles & 50–950 ramp

primary

#5183FF

secondary

#F3E2B9

accent

#A400E6

background

#F9FAFF

surface

#F2F4FF

border

#CCCED7

text

#0F0F18

muted

#7E7F86

Preview Lab

Preview with #5183FF

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

Preview Lab → · Contrast checker → · Palette generator →