#4166BC#4166BC

#4166BC is a mid, vivid blue. Relative luminance 0.143; OKLCH L 52.8% C 0.142 H 264.5°. Best body text is #FFFFFF at 5.45:1 contrast (WCAG AA passes).

Color values

HEX	#4166BC
RGB	rgb(65, 102, 188)
HSL	hsl(222, 49%, 50%)
HSV	hsv(222, 65%, 74%)
CMYK	cmyk(65.4%, 45.7%, 0%, 26.3%)
CIE-LAB	lab(44.60, 14.91, -49.28)
CIE-LCH	lch(44.60, 51.49, 286.83°)
OKLab	oklab(52.75% -0.0135 -0.1409)
OKLCH	oklch(52.75% 0.142 264.5)
XYZ	xyz(16.0053, 14.2559, 49.4754)
Luminance	0.1426 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4166BC #BC9741

analogous

#41A4BC #4166BC #5941BC

triadic

#4166BC #BC4166 #66BC41

tetradic

#4166BC #BC41A4 #BC9741 #41BC59

square

#4166BC #BC41A4 #BC9741 #41BC59

split-complementary

#4166BC #BC5941 #A4BC41

monochromatic

#223561 #314D8F #4166BC #6E8ACD #9BAFDC

Accessibility & contrast

On white

5.45

#4166BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.85

#4166BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4166BC

5.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4166BC	#FFFFFF	#000000	##FFFFFF
##4166BC	1.00	5.45	3.85	5.45
#FFFFFF	5.45	1.00	21.00	1.00
#000000	3.85	21.00	1.00	21.00
##FFFFFF	5.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C6FBF

Deuteranopia (green-blind)

#2664BA

Tritanopia (blue-blind)

#007A88

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #4166bc;
/* rgb */ color: rgb(65, 102, 188);
/* oklch */ color: oklch(52.8% 0.142 264.5);

Tailwind

colors: {
  custom: {
    50: '#8291d1',
    500: '#4166bc',
    950: '#000000',
  },
}

SCSS

$custom: #4166bc;
$custom-light: #8291d1;
$custom-dark: #000000;

JSON

{
  "hex": "#4166bc",
  "rgb": {
    "r": 65,
    "g": 102,
    "b": 188
  },
  "hsl": {
    "h": 221.951,
    "s": 48.617,
    "l": 49.608
  },
  "oklch": {
    "l": 0.5275,
    "c": 0.14152,
    "h": 264.5
  },
  "luminance": 0.14257
}

Semantic roles & 50–950 ramp

primary

#4166BC

secondary

#C9B890

accent

#AF50D8

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0C0C14

muted

#7D7D82

Preview Lab

Preview with #4166BC

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

Preview Lab → · Contrast checker → · Palette generator →