#3637BF#3637BF

#3637BF is a dark, highly saturated blue. Relative luminance 0.073; OKLCH L 43.6% C 0.205 H 273.5°. Best body text is #FFFFFF at 8.55:1 contrast (WCAG AA passes).

Color values

HEX	#3637BF
RGB	rgb(54, 55, 191)
HSL	hsl(240, 56%, 48%)
HSV	hsv(240, 72%, 75%)
CMYK	cmyk(71.7%, 71.2%, 0%, 25.1%)
CIE-LAB	lab(32.43, 44.08, -70.84)
CIE-LCH	lch(32.43, 83.43, 301.89°)
OKLab	oklab(43.6% 0.0127 -0.2049)
OKLCH	oklch(43.6% 0.205 273.5)
XYZ	xyz(12.2883, 7.2770, 50.0371)
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

#3637BF #BFBE36

analogous

#367BBF #3637BF #7936BF

triadic

#3637BF #BF3637 #37BF36

tetradic

#3637BF #BF367B #BFBE36 #36BF79

square

#3637BF #BF367B #BFBE36 #36BF79

split-complementary

#3637BF #BF7936 #7BBF36

monochromatic

#1B1C60 #29298F #3637BF #6061D2 #9090E0

Accessibility & contrast

On white

8.55

#3637BF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#3637BF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3637BF

8.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3637BF	#FFFFFF	#000000	##FFFFFF
##3637BF	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)

#0053C3

Deuteranopia (green-blind)

#0046BD

Tritanopia (blue-blind)

#005D77

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3637bf;
/* rgb */ color: rgb(54, 55, 191);
/* oklch */ color: oklch(43.6% 0.205 273.5);

Tailwind

colors: {
  custom: {
    50: '#816fd4',
    500: '#3637bf',
    950: '#000000',
  },
}

SCSS

$custom: #3637bf;
$custom-light: #816fd4;
$custom-dark: #000000;

JSON

{
  "hex": "#3637bf",
  "rgb": {
    "r": 54,
    "g": 55,
    "b": 191
  },
  "hsl": {
    "h": 239.562,
    "s": 55.918,
    "l": 48.039
  },
  "oklch": {
    "l": 0.43603,
    "c": 0.20526,
    "h": 273.5
  },
  "luminance": 0.07278
}

Semantic roles & 50–950 ramp

primary

#3637BF

secondary

#CACA87

accent

#DE49DF

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3637BF

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

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