#4B81E4#4B81E4

#4B81E4 is a mid, vivid blue. Relative luminance 0.228; OKLCH L 61.5% C 0.161 H 261.4°. Best body text is #000000 at 5.56:1 contrast (WCAG AA passes).

Color values

HEX	#4B81E4
RGB	rgb(75, 129, 228)
HSL	hsl(219, 74%, 59%)
HSV	hsv(219, 67%, 89%)
CMYK	cmyk(67.1%, 43.4%, 0%, 10.6%)
CIE-LAB	lab(54.86, 13.86, -55.61)
CIE-LCH	lch(54.86, 57.31, 283.99°)
OKLab	oklab(61.53% -0.024 -0.1589)
OKLCH	oklch(61.53% 0.161 261.4)
XYZ	xyz(24.7505, 22.7953, 76.4793)
Luminance	0.2280 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B81E4 #E4AE4B

analogous

#4BCDE4 #4B81E4 #624BE4

triadic

#4B81E4 #E44B81 #81E44B

tetradic

#4B81E4 #E44BCD #E4AE4B #4BE462

square

#4B81E4 #E44BCD #E4AE4B #4BE462

split-complementary

#4B81E4 #E4624B #CDE44B

monochromatic

#18479D #205FD2 #4B81E4 #80A6EC #B5CCF4

Accessibility & contrast

On white

3.78

#4B81E4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.56

#4B81E4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4B81E4

5.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B81E4	#FFFFFF	#000000	##000000
##4B81E4	1.00	3.78	5.56	5.56
#FFFFFF	3.78	1.00	21.00	21.00
#000000	5.56	21.00	1.00	1.00
##000000	5.56	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#518BE8

Deuteranopia (green-blind)

#377DE2

Tritanopia (blue-blind)

#0098A7

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #4b81e4;
/* rgb */ color: rgb(75, 129, 228);
/* oklch */ color: oklch(61.5% 0.161 261.4);

Tailwind

colors: {
  custom: {
    50: '#8da5ed',
    500: '#4b81e4',
    950: '#000000',
  },
}

SCSS

$custom: #4b81e4;
$custom-light: #8da5ed;
$custom-dark: #000000;

JSON

{
  "hex": "#4b81e4",
  "rgb": {
    "r": 75,
    "g": 129,
    "b": 228
  },
  "hsl": {
    "h": 218.824,
    "s": 73.913,
    "l": 59.412
  },
  "oklch": {
    "l": 0.61531,
    "c": 0.16071,
    "h": 261.4
  },
  "luminance": 0.22798
}

Semantic roles & 50–950 ramp

primary

#4B81E4

secondary

#E3CEA8

accent

#AF37F1

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #4B81E4

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

Preview Lab → · Contrast checker → · Palette generator →