#3C39BB#3C39BB

#3C39BB is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.9% C 0.197 H 275.6°. Best body text is #FFFFFF at 8.42:1 contrast (WCAG AA passes).

Color values

HEX	#3C39BB
RGB	rgb(60, 57, 187)
HSL	hsl(241, 53%, 48%)
HSV	hsv(241, 70%, 73%)
CMYK	cmyk(67.9%, 69.5%, 0%, 26.7%)
CIE-LAB	lab(32.86, 42.25, -67.76)
CIE-LCH	lch(32.86, 79.85, 301.94°)
OKLab	oklab(43.9% 0.0193 -0.1957)
OKLCH	oklch(43.9% 0.197 275.6)
XYZ	xyz(12.2933, 7.4737, 47.7988)
Luminance	0.0747 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 3.33

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3C39BB #B8BB39

analogous

#3977BB #3C39BB #7D39BB

triadic

#3C39BB #BB3C39 #39BB3C

tetradic

#3C39BB #BB3977 #B8BB39 #39BB7D

square

#3C39BB #BB3977 #B8BB39 #39BB7D

split-complementary

#3C39BB #BB7D39 #77BB39

monochromatic

#1E1C5D #2D2B8C #3C39BB #6562CF #9391DD

Accessibility & contrast

On white

8.42

#3C39BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#3C39BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3C39BB

8.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3C39BB	#FFFFFF	#000000	##FFFFFF
##3C39BB	1.00	8.42	2.49	8.42
#FFFFFF	8.42	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053BF

Deuteranopia (green-blind)

#0047B9

Tritanopia (blue-blind)

#005C75

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3c39bb;
/* rgb */ color: rgb(60, 57, 187);
/* oklch */ color: oklch(43.9% 0.197 275.6);

Tailwind

colors: {
  custom: {
    50: '#8370d1',
    500: '#3c39bb',
    950: '#000000',
  },
}

SCSS

$custom: #3c39bb;
$custom-light: #8370d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3c39bb",
  "rgb": {
    "r": 60,
    "g": 57,
    "b": 187
  },
  "hsl": {
    "h": 241.385,
    "s": 53.279,
    "l": 47.843
  },
  "oklch": {
    "l": 0.43899,
    "c": 0.19668,
    "h": 275.6
  },
  "luminance": 0.07475
}

Semantic roles & 50–950 ramp

primary

#3C39BB

secondary

#C7C887

accent

#DD4BD9

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3C39BB

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

Preview Lab → · Contrast checker → · Palette generator →