#4166B8#4166B8

#4166B8 is a mid, vivid blue. Relative luminance 0.141; OKLCH L 52.5% C 0.136 H 264.0°. Best body text is #FFFFFF at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#4166B8
RGB	rgb(65, 102, 184)
HSL	hsl(221, 48%, 49%)
HSV	hsv(221, 65%, 72%)
CMYK	cmyk(64.7%, 44.6%, 0%, 27.8%)
CIE-LAB	lab(44.36, 13.49, -47.34)
CIE-LCH	lch(44.36, 49.22, 285.90°)
OKLab	oklab(52.49% -0.0141 -0.1352)
OKLCH	oklch(52.49% 0.136 264)
XYZ	xyz(15.5801, 14.0858, 47.2359)
Luminance	0.1409 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4166B8 #B89341

analogous

#41A2B8 #4166B8 #5841B8

triadic

#4166B8 #B84166 #66B841

tetradic

#4166B8 #B841A2 #B89341 #41B858

square

#4166B8 #B841A2 #B89341 #41B858

split-complementary

#4166B8 #B85841 #A2B841

monochromatic

#21345E #314D8B #4166B8 #6B89CB #99ADDB

Accessibility & contrast

On white

5.50

#4166B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.82

#4166B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4166B8

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4166B8	#FFFFFF	#000000	##FFFFFF
##4166B8	1.00	5.50	3.82	5.50
#FFFFFF	5.50	1.00	21.00	1.00
#000000	3.82	21.00	1.00	21.00
##FFFFFF	5.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F6FBB

Deuteranopia (green-blind)

#2B64B6

Tritanopia (blue-blind)

#007986

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #4166b8;
/* rgb */ color: rgb(65, 102, 184);
/* oklch */ color: oklch(52.5% 0.136 264.0);

Tailwind

colors: {
  custom: {
    50: '#8191ce',
    500: '#4166b8',
    950: '#000000',
  },
}

SCSS

$custom: #4166b8;
$custom-light: #8191ce;
$custom-dark: #000000;

JSON

{
  "hex": "#4166b8",
  "rgb": {
    "r": 65,
    "g": 102,
    "b": 184
  },
  "hsl": {
    "h": 221.345,
    "s": 47.791,
    "l": 48.824
  },
  "oklch": {
    "l": 0.52487,
    "c": 0.13593,
    "h": 264
  },
  "luminance": 0.14087
}

Semantic roles & 50–950 ramp

primary

#4166B8

secondary

#C7B58E

accent

#AD50D7

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #4166B8

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

Preview Lab → · Contrast checker → · Palette generator →