#4139BF#4139BF

#4139BF is a dark, highly saturated blue. Relative luminance 0.078; OKLCH L 44.6% C 0.201 H 277.1°. Best body text is #FFFFFF at 8.20:1 contrast (WCAG AA passes).

Color values

HEX	#4139BF
RGB	rgb(65, 57, 191)
HSL	hsl(244, 54%, 49%)
HSV	hsv(244, 70%, 75%)
CMYK	cmyk(66%, 70.2%, 0%, 25.1%)
CIE-LAB	lab(33.59, 44.18, -68.91)
CIE-LCH	lch(33.59, 81.86, 302.66°)
OKLab	oklab(44.62% 0.025 -0.199)
OKLCH	oklch(44.62% 0.201 277.1)
XYZ	xyz(13.0440, 7.8105, 50.1003)
Luminance	0.0781 (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

#4139BF #B7BF39

analogous

#3974BF #4139BF #8439BF

triadic

#4139BF #BF4139 #39BF41

tetradic

#4139BF #BF3974 #B7BF39 #39BF84

square

#4139BF #BF3974 #B7BF39 #39BF84

split-complementary

#4139BF #BF8439 #74BF39

monochromatic

#211D61 #312B90 #4139BF #6B64D1 #9893DF

Accessibility & contrast

On white

8.20

#4139BF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#4139BF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4139BF

8.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4139BF	#FFFFFF	#000000	##FFFFFF
##4139BF	1.00	8.20	2.56	8.20
#FFFFFF	8.20	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055C3

Deuteranopia (green-blind)

#0049BD

Tritanopia (blue-blind)

#005E78

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #4139bf;
/* rgb */ color: rgb(65, 57, 191);
/* oklch */ color: oklch(44.6% 0.201 277.1);

Tailwind

colors: {
  custom: {
    50: '#8671d3',
    500: '#4139bf',
    950: '#000000',
  },
}

SCSS

$custom: #4139bf;
$custom-light: #8671d3;
$custom-dark: #000000;

JSON

{
  "hex": "#4139bf",
  "rgb": {
    "r": 65,
    "g": 57,
    "b": 191
  },
  "hsl": {
    "h": 243.582,
    "s": 54.032,
    "l": 48.627
  },
  "oklch": {
    "l": 0.44623,
    "c": 0.20053,
    "h": 277.1
  },
  "luminance": 0.07812
}

Semantic roles & 50–950 ramp

primary

#4139BF

secondary

#C6CA8A

accent

#DD4AD5

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0D0814

muted

#7D7B83

Preview Lab

Preview with #4139BF

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

Preview Lab → · Contrast checker → · Palette generator →