#5181F4#5181F4

#5181F4 is a light, vivid blue. Relative luminance 0.240; OKLCH L 62.8% C 0.180 H 264.7°. Best body text is #000000 at 5.80:1 contrast (WCAG AA passes).

Color values

HEX	#5181F4
RGB	rgb(81, 129, 244)
HSL	hsl(222, 88%, 64%)
HSV	hsv(222, 67%, 96%)
CMYK	cmyk(66.8%, 47.1%, 0%, 4.3%)
CIE-LAB	lab(56.07, 20.34, -62.57)
CIE-LCH	lch(56.07, 65.79, 288.01°)
OKLab	oklab(62.83% -0.0166 -0.1793)
OKLCH	oklch(62.83% 0.18 264.7)
XYZ	xyz(27.5670, 23.9788, 88.7460)
Luminance	0.2398 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5181F4 #F4C451

analogous

#51D3F4 #5181F4 #7251F4

triadic

#5181F4 #F45181 #81F451

tetradic

#5181F4 #F451D3 #F4C451 #51F472

square

#5181F4 #F451D3 #F4C451 #51F472

split-complementary

#5181F4 #F47251 #D3F451

monochromatic

#0C41BF #1757F0 #5181F4 #8BABF8 #C4D4FB

Accessibility & contrast

On white

3.62

#5181F4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.80

#5181F4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5181F4

5.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5181F4	#FFFFFF	#000000	##000000
##5181F4	1.00	3.62	5.80	5.80
#FFFFFF	3.62	1.00	21.00	21.00
#000000	5.80	21.00	1.00	1.00
##000000	5.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#448EF8

Deuteranopia (green-blind)

#1E7FF2

Tritanopia (blue-blind)

#009CAF

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #5181f4;
/* rgb */ color: rgb(81, 129, 244);
/* oklch */ color: oklch(62.8% 0.180 264.7);

Tailwind

colors: {
  custom: {
    50: '#92a5f8',
    500: '#5181f4',
    950: '#000000',
  },
}

SCSS

$custom: #5181f4;
$custom-light: #92a5f8;
$custom-dark: #000000;

JSON

{
  "hex": "#5181f4",
  "rgb": {
    "r": 81,
    "g": 129,
    "b": 244
  },
  "hsl": {
    "h": 222.331,
    "s": 88.108,
    "l": 63.725
  },
  "oklch": {
    "l": 0.62832,
    "c": 0.18004,
    "h": 264.7
  },
  "luminance": 0.23981
}

Semantic roles & 50–950 ramp

primary

#5181F4

secondary

#EDDCB4

accent

#A201E5

background

#F9FAFF

surface

#F2F4FF

border

#CCCED7

text

#0E0F17

muted

#7E7F85

Preview Lab

Preview with #5181F4

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

Preview Lab → · Contrast checker → · Palette generator →