#3637BD#3637BD

#3637BD is a dark, highly saturated blue. Relative luminance 0.072; OKLCH L 43.4% C 0.203 H 273.7°. Best body text is #FFFFFF at 8.61:1 contrast (WCAG AA passes).

Color values

HEX	#3637BD
RGB	rgb(54, 55, 189)
HSL	hsl(240, 56%, 48%)
HSV	hsv(240, 71%, 74%)
CMYK	cmyk(71.4%, 70.9%, 0%, 25.9%)
CIE-LAB	lab(32.23, 43.41, -69.98)
CIE-LCH	lch(32.23, 82.35, 301.81°)
OKLab	oklab(43.41% 0.013 -0.2024)
OKLCH	oklch(43.41% 0.203 273.7)
XYZ	xyz(12.0698, 7.1896, 48.8859)
Luminance	0.0719 (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

#3637BD #BDBC36

analogous

#367ABD #3637BD #7936BD

triadic

#3637BD #BD3637 #37BD36

tetradic

#3637BD #BD367A #BDBC36 #36BD79

square

#3637BD #BD367A #BDBC36 #36BD79

split-complementary

#3637BD #BD7936 #7ABD36

monochromatic

#1B1B5E #28298D #3637BD #5F60D1 #8F8FDF

Accessibility & contrast

On white

8.61

#3637BD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#3637BD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3637BD

8.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3637BD	#FFFFFF	#000000	##FFFFFF
##3637BD	1.00	8.61	2.44	8.61
#FFFFFF	8.61	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052C1

Deuteranopia (green-blind)

#0045BB

Tritanopia (blue-blind)

#005C76

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3637bd;
/* rgb */ color: rgb(54, 55, 189);
/* oklch */ color: oklch(43.4% 0.203 273.7);

Tailwind

colors: {
  custom: {
    50: '#816fd2',
    500: '#3637bd',
    950: '#000000',
  },
}

SCSS

$custom: #3637bd;
$custom-light: #816fd2;
$custom-dark: #000000;

JSON

{
  "hex": "#3637bd",
  "rgb": {
    "r": 54,
    "g": 55,
    "b": 189
  },
  "hsl": {
    "h": 239.556,
    "s": 55.556,
    "l": 47.647
  },
  "oklch": {
    "l": 0.43405,
    "c": 0.20279,
    "h": 273.7
  },
  "luminance": 0.07191
}

Semantic roles & 50–950 ramp

primary

#3637BD

secondary

#C9C985

accent

#DE49DF

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3637BD

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

Preview Lab → · Contrast checker → · Palette generator →