#4F81F3#4F81F3

#4F81F3 is a light, vivid blue. Relative luminance 0.238; OKLCH L 62.7% C 0.179 H 264.1°. Best body text is #000000 at 5.77:1 contrast (WCAG AA passes).

Color values

HEX	#4F81F3
RGB	rgb(79, 129, 243)
HSL	hsl(222, 87%, 63%)
HSV	hsv(222, 67%, 95%)
CMYK	cmyk(67.5%, 46.9%, 0%, 4.7%)
CIE-LAB	lab(55.92, 19.69, -62.26)
CIE-LCH	lch(55.92, 65.30, 287.55°)
OKLab	oklab(62.68% -0.0184 -0.1784)
OKLCH	oklch(62.68% 0.179 264.1)
XYZ	xyz(27.2467, 23.8311, 87.9406)
Luminance	0.2383 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F81F3 #F3C14F

analogous

#4FD3F3 #4F81F3 #6F4FF3

triadic

#4F81F3 #F34F81 #81F34F

tetradic

#4F81F3 #F34FD3 #F3C14F #4FF36F

square

#4F81F3 #F34FD3 #F3C14F #4FF36F

split-complementary

#4F81F3 #F36F4F #D3F34F

monochromatic

#0D42BB #1658EF #4F81F3 #88AAF7 #C2D3FB

Accessibility & contrast

On white

3.64

#4F81F3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.77

#4F81F3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4F81F3

5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F81F3	#FFFFFF	#000000	##000000
##4F81F3	1.00	3.64	5.77	5.77
#FFFFFF	3.64	1.00	21.00	21.00
#000000	5.77	21.00	1.00	1.00
##000000	5.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#458EF7

Deuteranopia (green-blind)

#1E7FF1

Tritanopia (blue-blind)

#009CAE

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #4f81f3;
/* rgb */ color: rgb(79, 129, 243);
/* oklch */ color: oklch(62.7% 0.179 264.1);

Tailwind

colors: {
  custom: {
    50: '#91a5f8',
    500: '#4f81f3',
    950: '#000000',
  },
}

SCSS

$custom: #4f81f3;
$custom-light: #91a5f8;
$custom-dark: #000000;

JSON

{
  "hex": "#4f81f3",
  "rgb": {
    "r": 79,
    "g": 129,
    "b": 243
  },
  "hsl": {
    "h": 221.707,
    "s": 87.234,
    "l": 63.137
  },
  "oklch": {
    "l": 0.62676,
    "c": 0.17934,
    "h": 264.1
  },
  "luminance": 0.23834
}

Semantic roles & 50–950 ramp

primary

#4F81F3

secondary

#ECDAB2

accent

#9F02E4

background

#F9FAFF

surface

#F2F4FF

border

#CCCED7

text

#0E0F17

muted

#7E7F85

Preview Lab

Preview with #4F81F3

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

Preview Lab → · Contrast checker → · Palette generator →