#4143BF#4143BF

#4143BF is a mid, vivid blue. Relative luminance 0.089; OKLCH L 46.2% C 0.189 H 275.4°. Best body text is #FFFFFF at 7.55:1 contrast (WCAG AA passes).

Color values

HEX	#4143BF
RGB	rgb(65, 67, 191)
HSL	hsl(239, 50%, 50%)
HSV	hsv(239, 66%, 75%)
CMYK	cmyk(66%, 64.9%, 0%, 25.1%)
CIE-LAB	lab(35.79, 38.22, -65.30)
CIE-LCH	lch(35.79, 75.66, 300.34°)
OKLab	oklab(46.22% 0.0177 -0.1884)
OKLCH	oklch(46.22% 0.189 275.4)
XYZ	xyz(13.5880, 8.8985, 50.2816)
Luminance	0.0890 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4143BF #BFBD41

analogous

#4182BF #4143BF #7E41BF

triadic

#4143BF #BF4143 #43BF41

tetradic

#4143BF #BF4182 #BFBD41 #41BF7E

square

#4143BF #BF4182 #BFBD41 #41BF7E

split-complementary

#4143BF #BF7E41 #82BF41

monochromatic

#222364 #313392 #4143BF #6F70CE #9D9EDE

Accessibility & contrast

On white

7.55

#4143BF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#4143BF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4143BF

7.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4143BF	#FFFFFF	#000000	##FFFFFF
##4143BF	1.00	7.55	2.78	7.55
#FFFFFF	7.55	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005AC3

Deuteranopia (green-blind)

#004FBD

Tritanopia (blue-blind)

#00637B

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #4143bf;
/* rgb */ color: rgb(65, 67, 191);
/* oklch */ color: oklch(46.2% 0.189 275.4);

Tailwind

colors: {
  custom: {
    50: '#8577d3',
    500: '#4143bf',
    950: '#000000',
  },
}

SCSS

$custom: #4143bf;
$custom-light: #8577d3;
$custom-dark: #000000;

JSON

{
  "hex": "#4143bf",
  "rgb": {
    "r": 65,
    "g": 67,
    "b": 191
  },
  "hsl": {
    "h": 239.048,
    "s": 49.606,
    "l": 50.196
  },
  "oklch": {
    "l": 0.46215,
    "c": 0.18921,
    "h": 275.4
  },
  "luminance": 0.089
}

Semantic roles & 50–950 ramp

primary

#4143BF

secondary

#CAC992

accent

#D74FD9

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #4143BF

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

Preview Lab → · Contrast checker → · Palette generator →