#4166B3#4166B3

#4166B3 is a mid, vivid blue. Relative luminance 0.139; OKLCH L 52.2% C 0.129 H 263.3°. Best body text is #FFFFFF at 5.56:1 contrast (WCAG AA passes).

Color values

HEX	#4166B3
RGB	rgb(65, 102, 179)
HSL	hsl(221, 47%, 48%)
HSV	hsv(221, 64%, 70%)
CMYK	cmyk(63.7%, 43%, 0%, 29.8%)
CIE-LAB	lab(44.06, 11.71, -44.90)
CIE-LCH	lch(44.06, 46.40, 284.62°)
OKLab	oklab(52.16% -0.0151 -0.128)
OKLCH	oklch(52.16% 0.129 263.3)
XYZ	xyz(15.0652, 13.8799, 44.5242)
Luminance	0.1388 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4166B3 #B38E41

analogous

#419FB3 #4166B3 #5541B3

triadic

#4166B3 #B34166 #66B341

tetradic

#4166B3 #B3419F #B38E41 #41B355

square

#4166B3 #B3419F #B38E41 #41B355

split-complementary

#4166B3 #B35541 #9FB341

monochromatic

#203359 #314C86 #4166B3 #6988C8 #96ABD9

Accessibility & contrast

On white

5.56

#4166B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.78

#4166B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4166B3

5.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4166B3	#FFFFFF	#000000	##FFFFFF
##4166B3	1.00	5.56	3.78	5.56
#FFFFFF	5.56	1.00	21.00	1.00
#000000	3.78	21.00	1.00	21.00
##FFFFFF	5.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#436EB6

Deuteranopia (green-blind)

#3163B1

Tritanopia (blue-blind)

#007784

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #4166b3;
/* rgb */ color: rgb(65, 102, 179);
/* oklch */ color: oklch(52.2% 0.129 263.3);

Tailwind

colors: {
  custom: {
    50: '#8191ca',
    500: '#4166b3',
    950: '#000000',
  },
}

SCSS

$custom: #4166b3;
$custom-light: #8191ca;
$custom-dark: #000000;

JSON

{
  "hex": "#4166b3",
  "rgb": {
    "r": 65,
    "g": 102,
    "b": 179
  },
  "hsl": {
    "h": 220.526,
    "s": 46.721,
    "l": 47.843
  },
  "oklch": {
    "l": 0.52163,
    "c": 0.12889,
    "h": 263.3
  },
  "luminance": 0.13881
}

Semantic roles & 50–950 ramp

primary

#4166B3

secondary

#C4B28B

accent

#AB51D6

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #4166B3

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

Preview Lab → · Contrast checker → · Palette generator →