#4181EA#4181EA

#4181EA is a mid, vivid blue. Relative luminance 0.228; OKLCH L 61.5% C 0.172 H 259.8°. Best body text is #000000 at 5.55:1 contrast (WCAG AA passes).

Color values

HEX	#4181EA
RGB	rgb(65, 129, 234)
HSL	hsl(217, 80%, 59%)
HSV	hsv(217, 72%, 92%)
CMYK	cmyk(72.2%, 44.9%, 0%, 8.2%)
CIE-LAB	lab(54.83, 14.54, -59.04)
CIE-LCH	lch(54.83, 60.80, 283.84°)
OKLab	oklab(61.51% -0.0304 -0.1691)
OKLCH	oklch(61.51% 0.172 259.8)
XYZ	xyz(24.8761, 22.7621, 80.9084)
Luminance	0.2276 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4181EA #EAAA41

analogous

#41D6EA #4181EA #5541EA

triadic

#4181EA #EA4181 #81EA41

tetradic

#4181EA #EA41D6 #EAAA41 #41EA55

square

#4181EA #EA41D6 #EAAA41 #41EA55

split-complementary

#4181EA #EA5541 #D6EA41

monochromatic

#12479F #1860D6 #4181EA #78A6F0 #AFCAF6

Accessibility & contrast

On white

3.78

#4181EA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.55

#4181EA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4181EA

5.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4181EA	#FFFFFF	#000000	##000000
##4181EA	1.00	3.78	5.55	5.55
#FFFFFF	3.78	1.00	21.00	21.00
#000000	5.55	21.00	1.00	1.00
##000000	5.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B8CEE

Deuteranopia (green-blind)

#287CE8

Tritanopia (blue-blind)

#009AAA

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #4181ea;
/* rgb */ color: rgb(65, 129, 234);
/* oklch */ color: oklch(61.5% 0.172 259.8);

Tailwind

colors: {
  custom: {
    50: '#8aa4f1',
    500: '#4181ea',
    950: '#000000',
  },
}

SCSS

$custom: #4181ea;
$custom-light: #8aa4f1;
$custom-dark: #000000;

JSON

{
  "hex": "#4181ea",
  "rgb": {
    "r": 65,
    "g": 129,
    "b": 234
  },
  "hsl": {
    "h": 217.278,
    "s": 80.095,
    "l": 58.627
  },
  "oklch": {
    "l": 0.61511,
    "c": 0.17185,
    "h": 259.8
  },
  "luminance": 0.22765
}

Semantic roles & 50–950 ramp

primary

#4181EA

secondary

#E5CCA2

accent

#AC31F7

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0D0F17

muted

#7E7F85

Preview Lab

Preview with #4181EA

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

Preview Lab → · Contrast checker → · Palette generator →