#3B37BB#3B37BB

#3B37BB is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.5% C 0.199 H 275.6°. Best body text is #FFFFFF at 8.57:1 contrast (WCAG AA passes).

Color values

HEX	#3B37BB
RGB	rgb(59, 55, 187)
HSL	hsl(242, 55%, 47%)
HSV	hsv(242, 71%, 73%)
CMYK	cmyk(68.4%, 70.6%, 0%, 26.7%)
CIE-LAB	lab(32.37, 43.30, -68.57)
CIE-LCH	lch(32.37, 81.10, 302.27°)
OKLab	oklab(43.53% 0.0193 -0.1981)
OKLCH	oklch(43.53% 0.199 275.6)
XYZ	xyz(12.1365, 7.2489, 47.7637)
Luminance	0.0725 (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

#3B37BB #B7BB37

analogous

#3775BB #3B37BB #7D37BB

triadic

#3B37BB #BB3B37 #37BB3B

tetradic

#3B37BB #BB3775 #B7BB37 #37BB7D

square

#3B37BB #BB3775 #B7BB37 #37BB7D

split-complementary

#3B37BB #BB7D37 #75BB37

monochromatic

#1D1B5C #2C298C #3B37BB #635FD0 #918EDE

Accessibility & contrast

On white

8.57

#3B37BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#3B37BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3B37BB

8.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B37BB	#FFFFFF	#000000	##FFFFFF
##3B37BB	1.00	8.57	2.45	8.57
#FFFFFF	8.57	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052BF

Deuteranopia (green-blind)

#0046B9

Tritanopia (blue-blind)

#005B75

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3b37bb;
/* rgb */ color: rgb(59, 55, 187);
/* oklch */ color: oklch(43.5% 0.199 275.6);

Tailwind

colors: {
  custom: {
    50: '#826fd1',
    500: '#3b37bb',
    950: '#000000',
  },
}

SCSS

$custom: #3b37bb;
$custom-light: #826fd1;
$custom-dark: #000000;

JSON

{
  "hex": "#3b37bb",
  "rgb": {
    "r": 59,
    "g": 55,
    "b": 187
  },
  "hsl": {
    "h": 241.818,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.43527,
    "c": 0.19907,
    "h": 275.6
  },
  "luminance": 0.0725
}

Semantic roles & 50–950 ramp

primary

#3B37BB

secondary

#C6C985

accent

#DE4AD9

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3B37BB

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

Preview Lab → · Contrast checker → · Palette generator →