#4139CC#4139CC

#4139CC is a mid, highly saturated blue. Relative luminance 0.084; OKLCH L 45.9% C 0.216 H 276.0°. Best body text is #FFFFFF at 7.83:1 contrast (WCAG AA passes).

Color values

HEX	#4139CC
RGB	rgb(65, 57, 204)
HSL	hsl(243, 59%, 51%)
HSV	hsv(243, 72%, 80%)
CMYK	cmyk(68.1%, 72.1%, 0%, 20%)
CIE-LAB	lab(34.82, 48.35, -74.48)
CIE-LCH	lch(34.82, 88.80, 302.99°)
OKLab	oklab(45.88% 0.0227 -0.2152)
OKLCH	oklch(45.88% 0.216 276)
XYZ	xyz(14.5386, 8.4084, 57.9718)
Luminance	0.0841 (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

#4139CC #C4CC39

analogous

#397ACC #4139CC #8A39CC

triadic

#4139CC #CC4139 #39CC41

tetradic

#4139CC #CC397A #C4CC39 #39CC8A

square

#4139CC #CC397A #C4CC39 #39CC8A

split-complementary

#4139CC #CC8A39 #7ACC39

monochromatic

#211C6E #2F299F #4139CC #706AD9 #9E9AE5

Accessibility & contrast

On white

7.83

#4139CC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#4139CC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4139CC

7.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4139CC	#FFFFFF	#000000	##FFFFFF
##4139CC	1.00	7.83	2.68	7.83
#FFFFFF	7.83	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058D0

Deuteranopia (green-blind)

#004BC9

Tritanopia (blue-blind)

#00627F

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #4139cc;
/* rgb */ color: rgb(65, 57, 204);
/* oklch */ color: oklch(45.9% 0.216 276.0);

Tailwind

colors: {
  custom: {
    50: '#8871dd',
    500: '#4139cc',
    950: '#000000',
  },
}

SCSS

$custom: #4139cc;
$custom-light: #8871dd;
$custom-dark: #000000;

JSON

{
  "hex": "#4139cc",
  "rgb": {
    "r": 65,
    "g": 57,
    "b": 204
  },
  "hsl": {
    "h": 243.265,
    "s": 59.036,
    "l": 51.176
  },
  "oklch": {
    "l": 0.45878,
    "c": 0.21643,
    "h": 276
  },
  "luminance": 0.0841
}

Semantic roles & 50–950 ramp

primary

#4139CC

secondary

#CDD190

accent

#E246DA

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #4139CC

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

Preview Lab → · Contrast checker → · Palette generator →