#3B41BB#3B41BB

#3B41BB is a mid, vivid blue. Relative luminance 0.083; OKLCH L 45.1% C 0.188 H 273.8°. Best body text is #FFFFFF at 7.90:1 contrast (WCAG AA passes).

Color values

HEX	#3B41BB
RGB	rgb(59, 65, 187)
HSL	hsl(237, 52%, 48%)
HSV	hsv(237, 68%, 73%)
CMYK	cmyk(68.4%, 65.2%, 0%, 26.7%)
CIE-LAB	lab(34.59, 37.28, -64.92)
CIE-LCH	lch(34.59, 74.86, 299.86°)
OKLab	oklab(45.14% 0.0126 -0.1874)
OKLCH	oklch(45.14% 0.188 273.8)
XYZ	xyz(12.6606, 8.2971, 47.9384)
Luminance	0.0830 (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

#3B41BB #BBB53B

analogous

#3B81BB #3B41BB #753BBB

triadic

#3B41BB #BB3B41 #41BB3B

tetradic

#3B41BB #BB3B81 #BBB53B #3BBB75

square

#3B41BB #BB3B81 #BBB53B #3BBB75

split-complementary

#3B41BB #BB753B #81BB3B

monochromatic

#1E215E #2C318C #3B41BB #656ACE #9397DD

Accessibility & contrast

On white

7.90

#3B41BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#3B41BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3B41BB

7.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B41BB	#FFFFFF	#000000	##FFFFFF
##3B41BB	1.00	7.90	2.66	7.90
#FFFFFF	7.90	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057BF

Deuteranopia (green-blind)

#004CB9

Tritanopia (blue-blind)

#006178

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3b41bb;
/* rgb */ color: rgb(59, 65, 187);
/* oklch */ color: oklch(45.1% 0.188 273.8);

Tailwind

colors: {
  custom: {
    50: '#8176d0',
    500: '#3b41bb',
    950: '#000000',
  },
}

SCSS

$custom: #3b41bb;
$custom-light: #8176d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3b41bb",
  "rgb": {
    "r": 59,
    "g": 65,
    "b": 187
  },
  "hsl": {
    "h": 237.188,
    "s": 52.033,
    "l": 48.235
  },
  "oklch": {
    "l": 0.45137,
    "c": 0.18785,
    "h": 273.8
  },
  "luminance": 0.08298
}

Semantic roles & 50–950 ramp

primary

#3B41BB

secondary

#C8C58A

accent

#D54CDB

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #3B41BB

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

Preview Lab → · Contrast checker → · Palette generator →