#4166B1#4166B1

#4166B1 is a mid, vivid blue. Relative luminance 0.138; OKLCH L 52.0% C 0.126 H 263.0°. Best body text is #FFFFFF at 5.58:1 contrast (WCAG AA passes).

Color values

HEX	#4166B1
RGB	rgb(65, 102, 177)
HSL	hsl(220, 46%, 47%)
HSV	hsv(220, 63%, 69%)
CMYK	cmyk(63.3%, 42.4%, 0%, 30.6%)
CIE-LAB	lab(43.94, 11.01, -43.91)
CIE-LCH	lch(43.94, 45.27, 284.07°)
OKLab	oklab(52.04% -0.0154 -0.1251)
OKLCH	oklch(52.04% 0.126 263)
XYZ	xyz(14.8644, 13.7995, 43.4667)
Luminance	0.1380 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4166B1 #B18C41

analogous

#419EB1 #4166B1 #5441B1

triadic

#4166B1 #B14166 #66B141

tetradic

#4166B1 #B1419E #B18C41 #41B154

square

#4166B1 #B1419E #B18C41 #41B154

split-complementary

#4166B1 #B15441 #9EB141

monochromatic

#203257 #314C84 #4166B1 #6887C7 #95ABD8

Accessibility & contrast

On white

5.58

#4166B1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.76

#4166B1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4166B1

5.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4166B1	#FFFFFF	#000000	##FFFFFF
##4166B1	1.00	5.58	3.76	5.58
#FFFFFF	5.58	1.00	21.00	1.00
#000000	3.76	21.00	1.00	21.00
##FFFFFF	5.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#446DB4

Deuteranopia (green-blind)

#3363AF

Tritanopia (blue-blind)

#007783

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #4166b1;
/* rgb */ color: rgb(65, 102, 177);
/* oklch */ color: oklch(52.0% 0.126 263.0);

Tailwind

colors: {
  custom: {
    50: '#8091c9',
    500: '#4166b1',
    950: '#000000',
  },
}

SCSS

$custom: #4166b1;
$custom-light: #8091c9;
$custom-dark: #000000;

JSON

{
  "hex": "#4166b1",
  "rgb": {
    "r": 65,
    "g": 102,
    "b": 177
  },
  "hsl": {
    "h": 220.179,
    "s": 46.281,
    "l": 47.451
  },
  "oklch": {
    "l": 0.52036,
    "c": 0.12607,
    "h": 263
  },
  "luminance": 0.13801
}

Semantic roles & 50–950 ramp

primary

#4166B1

secondary

#C3B18A

accent

#AA52D6

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #4166B1

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

Preview Lab → · Contrast checker → · Palette generator →