#4166BF#4166BF

#4166BF is a mid, vivid blue. Relative luminance 0.144; OKLCH L 53.0% C 0.146 H 264.9°. Best body text is #FFFFFF at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#4166BF
RGB	rgb(65, 102, 191)
HSL	hsl(222, 50%, 50%)
HSV	hsv(222, 66%, 75%)
CMYK	cmyk(66%, 46.6%, 0%, 25.1%)
CIE-LAB	lab(44.78, 15.98, -50.72)
CIE-LCH	lch(44.78, 53.18, 287.49°)
OKLab	oklab(52.95% -0.013 -0.1451)
OKLCH	oklch(52.95% 0.146 264.9)
XYZ	xyz(16.3320, 14.3866, 51.1963)
Luminance	0.1439 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4166BF #BF9A41

analogous

#41A5BF #4166BF #5B41BF

triadic

#4166BF #BF4166 #66BF41

tetradic

#4166BF #BF41A5 #BF9A41 #41BF5B

square

#4166BF #BF41A5 #BF9A41 #41BF5B

split-complementary

#4166BF #BF5B41 #A5BF41

monochromatic

#223564 #314D92 #4166BF #6F8BCE #9DB0DE

Accessibility & contrast

On white

5.42

#4166BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.88

#4166BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4166BF

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4166BF	#FFFFFF	#000000	##FFFFFF
##4166BF	1.00	5.42	3.88	5.42
#FFFFFF	5.42	1.00	21.00	1.00
#000000	3.88	21.00	1.00	21.00
##FFFFFF	5.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3970C2

Deuteranopia (green-blind)

#2165BD

Tritanopia (blue-blind)

#007B89

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #4166bf;
/* rgb */ color: rgb(65, 102, 191);
/* oklch */ color: oklch(53.0% 0.146 264.9);

Tailwind

colors: {
  custom: {
    50: '#8391d3',
    500: '#4166bf',
    950: '#000000',
  },
}

SCSS

$custom: #4166bf;
$custom-light: #8391d3;
$custom-dark: #000000;

JSON

{
  "hex": "#4166bf",
  "rgb": {
    "r": 65,
    "g": 102,
    "b": 191
  },
  "hsl": {
    "h": 222.381,
    "s": 49.606,
    "l": 50.196
  },
  "oklch": {
    "l": 0.52951,
    "c": 0.14571,
    "h": 264.9
  },
  "luminance": 0.14388
}

Semantic roles & 50–950 ramp

primary

#4166BF

secondary

#CABA92

accent

#B04FD9

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0C0C14

muted

#7D7D83

Preview Lab

Preview with #4166BF

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

Preview Lab → · Contrast checker → · Palette generator →