#3736BB#3736BB

#3736BB is a dark, highly saturated blue. Relative luminance 0.070; OKLCH L 43.1% C 0.201 H 274.3°. Best body text is #FFFFFF at 8.72:1 contrast (WCAG AA passes).

Color values

HEX	#3736BB
RGB	rgb(55, 54, 187)
HSL	hsl(240, 55%, 47%)
HSV	hsv(240, 71%, 73%)
CMYK	cmyk(70.6%, 71.1%, 0%, 26.7%)
CIE-LAB	lab(31.89, 43.43, -69.36)
CIE-LCH	lch(31.89, 81.84, 302.05°)
OKLab	oklab(43.12% 0.0151 -0.2005)
OKLCH	oklch(43.12% 0.201 274.3)
XYZ	xyz(11.8614, 7.0373, 47.7373)
Luminance	0.0704 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Sapphire (survey)

#2138AB

ΔE00 3.58

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3736BB #BABB36

analogous

#3678BB #3736BB #7936BB

triadic

#3736BB #BB3736 #36BB37

tetradic

#3736BB #BB3678 #BABB36 #36BB79

square

#3736BB #BB3678 #BABB36 #36BB79

split-complementary

#3736BB #BB7936 #78BB36

monochromatic

#1B1B5C #29288C #3736BB #5F5ED0 #8E8DDE

Accessibility & contrast

On white

8.72

#3736BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#3736BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3736BB

8.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3736BB	#FFFFFF	#000000	##FFFFFF
##3736BB	1.00	8.72	2.41	8.72
#FFFFFF	8.72	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051BF

Deuteranopia (green-blind)

#0045B9

Tritanopia (blue-blind)

#005B75

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3736bb;
/* rgb */ color: rgb(55, 54, 187);
/* oklch */ color: oklch(43.1% 0.201 274.3);

Tailwind

colors: {
  custom: {
    50: '#816ed1',
    500: '#3736bb',
    950: '#000000',
  },
}

SCSS

$custom: #3736bb;
$custom-light: #816ed1;
$custom-dark: #000000;

JSON

{
  "hex": "#3736bb",
  "rgb": {
    "r": 55,
    "g": 54,
    "b": 187
  },
  "hsl": {
    "h": 240.451,
    "s": 55.187,
    "l": 47.255
  },
  "oklch": {
    "l": 0.43117,
    "c": 0.20111,
    "h": 274.3
  },
  "luminance": 0.07038
}

Semantic roles & 50–950 ramp

primary

#3736BB

secondary

#C8C984

accent

#DF49DD

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3736BB

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

Preview Lab → · Contrast checker → · Palette generator →