#3C37BB#3C37BB

#3C37BB is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.6% C 0.199 H 275.9°. Best body text is #FFFFFF at 8.55:1 contrast (WCAG AA passes).

Color values

HEX	#3C37BB
RGB	rgb(60, 55, 187)
HSL	hsl(242, 55%, 47%)
HSV	hsv(242, 71%, 73%)
CMYK	cmyk(67.9%, 70.6%, 0%, 26.7%)
CIE-LAB	lab(32.44, 43.42, -68.46)
CIE-LCH	lch(32.44, 81.07, 302.39°)
OKLab	oklab(43.59% 0.0206 -0.1978)
OKLCH	oklch(43.59% 0.199 275.9)
XYZ	xyz(12.1964, 7.2798, 47.7665)
Luminance	0.0728 (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

#3C37BB #B6BB37

analogous

#3774BB #3C37BB #7E37BB

triadic

#3C37BB #BB3C37 #37BB3C

tetradic

#3C37BB #BB3774 #B6BB37 #37BB7E

square

#3C37BB #BB3774 #B6BB37 #37BB7E

split-complementary

#3C37BB #BB7E37 #74BB37

monochromatic

#1E1B5C #2D298C #3C37BB #635FD0 #918EDE

Accessibility & contrast

On white

8.55

#3C37BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#3C37BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3C37BB

8.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3C37BB	#FFFFFF	#000000	##FFFFFF
##3C37BB	1.00	8.55	2.46	8.55
#FFFFFF	8.55	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.55	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: #3c37bb;
/* rgb */ color: rgb(60, 55, 187);
/* oklch */ color: oklch(43.6% 0.199 275.9);

Tailwind

colors: {
  custom: {
    50: '#836fd1',
    500: '#3c37bb',
    950: '#000000',
  },
}

SCSS

$custom: #3c37bb;
$custom-light: #836fd1;
$custom-dark: #000000;

JSON

{
  "hex": "#3c37bb",
  "rgb": {
    "r": 60,
    "g": 55,
    "b": 187
  },
  "hsl": {
    "h": 242.273,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.43594,
    "c": 0.19884,
    "h": 275.9
  },
  "luminance": 0.07281
}

Semantic roles & 50–950 ramp

primary

#3C37BB

secondary

#C6C985

accent

#DE4AD8

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3C37BB

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

Preview Lab → · Contrast checker → · Palette generator →