#4166BB#4166BB

#4166BB is a mid, vivid blue. Relative luminance 0.142; OKLCH L 52.7% C 0.140 H 264.4°. Best body text is #FFFFFF at 5.46:1 contrast (WCAG AA passes).

Color values

HEX	#4166BB
RGB	rgb(65, 102, 187)
HSL	hsl(222, 48%, 49%)
HSV	hsv(222, 65%, 73%)
CMYK	cmyk(65.2%, 45.5%, 0%, 26.7%)
CIE-LAB	lab(44.54, 14.55, -48.80)
CIE-LCH	lch(44.54, 50.92, 286.61°)
OKLab	oklab(52.68% -0.0136 -0.1395)
OKLCH	oklch(52.68% 0.14 264.4)
XYZ	xyz(15.8979, 14.2129, 48.9096)
Luminance	0.1421 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4166BB #BB9641

analogous

#41A3BB #4166BB #5941BB

triadic

#4166BB #BB4166 #66BB41

tetradic

#4166BB #BB41A3 #BB9641 #41BB59

square

#4166BB #BB41A3 #BB9641 #41BB59

split-complementary

#4166BB #BB5941 #A3BB41

monochromatic

#213460 #314D8E #4166BB #6D8ACC #9AAEDC

Accessibility & contrast

On white

5.46

#4166BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.84

#4166BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4166BB

5.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4166BB	#FFFFFF	#000000	##FFFFFF
##4166BB	1.00	5.46	3.84	5.46
#FFFFFF	5.46	1.00	21.00	1.00
#000000	3.84	21.00	1.00	21.00
##FFFFFF	5.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D6FBE

Deuteranopia (green-blind)

#2764B9

Tritanopia (blue-blind)

#007987

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #4166bb;
/* rgb */ color: rgb(65, 102, 187);
/* oklch */ color: oklch(52.7% 0.140 264.4);

Tailwind

colors: {
  custom: {
    50: '#8291d0',
    500: '#4166bb',
    950: '#000000',
  },
}

SCSS

$custom: #4166bb;
$custom-light: #8291d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4166bb",
  "rgb": {
    "r": 65,
    "g": 102,
    "b": 187
  },
  "hsl": {
    "h": 221.803,
    "s": 48.413,
    "l": 49.412
  },
  "oklch": {
    "l": 0.52684,
    "c": 0.14012,
    "h": 264.4
  },
  "luminance": 0.14214
}

Semantic roles & 50–950 ramp

primary

#4166BB

secondary

#C8B790

accent

#AF50D8

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #4166BB

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

Preview Lab → · Contrast checker → · Palette generator →