#4166B4#4166B4

#4166B4 is a mid, vivid blue. Relative luminance 0.139; OKLCH L 52.2% C 0.130 H 263.4°. Best body text is #FFFFFF at 5.55:1 contrast (WCAG AA passes).

Color values

HEX	#4166B4
RGB	rgb(65, 102, 180)
HSL	hsl(221, 47%, 48%)
HSV	hsv(221, 64%, 71%)
CMYK	cmyk(63.9%, 43.3%, 0%, 29.4%)
CIE-LAB	lab(44.12, 12.07, -45.39)
CIE-LCH	lch(44.12, 46.96, 284.89°)
OKLab	oklab(52.23% -0.0149 -0.1294)
OKLCH	oklch(52.23% 0.13 263.4)
XYZ	xyz(15.1667, 13.9205, 45.0588)
Luminance	0.1392 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4166B4 #B48F41

analogous

#419FB4 #4166B4 #5641B4

triadic

#4166B4 #B44166 #66B441

tetradic

#4166B4 #B4419F #B48F41 #41B456

square

#4166B4 #B4419F #B48F41 #41B456

split-complementary

#4166B4 #B45641 #9FB441

monochromatic

#21335A #314D87 #4166B4 #6988C9 #96ACD9

Accessibility & contrast

On white

5.55

#4166B4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.78

#4166B4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4166B4

5.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4166B4	#FFFFFF	#000000	##FFFFFF
##4166B4	1.00	5.55	3.78	5.55
#FFFFFF	5.55	1.00	21.00	1.00
#000000	3.78	21.00	1.00	21.00
##FFFFFF	5.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#426EB7

Deuteranopia (green-blind)

#3063B2

Tritanopia (blue-blind)

#007884

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #4166b4;
/* rgb */ color: rgb(65, 102, 180);
/* oklch */ color: oklch(52.2% 0.130 263.4);

Tailwind

colors: {
  custom: {
    50: '#8191cb',
    500: '#4166b4',
    950: '#000000',
  },
}

SCSS

$custom: #4166b4;
$custom-light: #8191cb;
$custom-dark: #000000;

JSON

{
  "hex": "#4166b4",
  "rgb": {
    "r": 65,
    "g": 102,
    "b": 180
  },
  "hsl": {
    "h": 220.696,
    "s": 46.939,
    "l": 48.039
  },
  "oklch": {
    "l": 0.52227,
    "c": 0.1303,
    "h": 263.4
  },
  "luminance": 0.13922
}

Semantic roles & 50–950 ramp

primary

#4166B4

secondary

#C5B38C

accent

#AC51D7

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #4166B4

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

Preview Lab → · Contrast checker → · Palette generator →