#3B37BA#3B37BA

#3B37BA is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.4% C 0.198 H 275.7°. Best body text is #FFFFFF at 8.60:1 contrast (WCAG AA passes).

Color values

HEX	#3B37BA
RGB	rgb(59, 55, 186)
HSL	hsl(242, 54%, 47%)
HSV	hsv(242, 70%, 73%)
CMYK	cmyk(68.3%, 70.4%, 0%, 27.1%)
CIE-LAB	lab(32.27, 42.97, -68.14)
CIE-LCH	lch(32.27, 80.56, 302.24°)
OKLab	oklab(43.43% 0.0195 -0.1969)
OKLCH	oklch(43.43% 0.198 275.7)
XYZ	xyz(12.0298, 7.2063, 47.2018)
Luminance	0.0721 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 3.71

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B37BA #B6BA37

analogous

#3775BA #3B37BA #7D37BA

triadic

#3B37BA #BA3B37 #37BA3B

tetradic

#3B37BA #BA3775 #B6BA37 #37BA7D

square

#3B37BA #BA3775 #B6BA37 #37BA7D

split-complementary

#3B37BA #BA7D37 #75BA37

monochromatic

#1D1B5C #2C298B #3B37BA #625FD0 #908EDE

Accessibility & contrast

On white

8.60

#3B37BA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#3B37BA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3B37BA

8.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B37BA	#FFFFFF	#000000	##FFFFFF
##3B37BA	1.00	8.60	2.44	8.60
#FFFFFF	8.60	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052BE

Deuteranopia (green-blind)

#0046B8

Tritanopia (blue-blind)

#005B74

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3b37ba;
/* rgb */ color: rgb(59, 55, 186);
/* oklch */ color: oklch(43.4% 0.198 275.7);

Tailwind

colors: {
  custom: {
    50: '#826fd0',
    500: '#3b37ba',
    950: '#000000',
  },
}

SCSS

$custom: #3b37ba;
$custom-light: #826fd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3b37ba",
  "rgb": {
    "r": 59,
    "g": 55,
    "b": 186
  },
  "hsl": {
    "h": 241.832,
    "s": 54.357,
    "l": 47.255
  },
  "oklch": {
    "l": 0.4343,
    "c": 0.19782,
    "h": 275.7
  },
  "luminance": 0.07207
}

Semantic roles & 50–950 ramp

primary

#3B37BA

secondary

#C6C885

accent

#DE4AD9

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3B37BA

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

Preview Lab → · Contrast checker → · Palette generator →