#3637BA#3637BA

#3637BA is a dark, vivid blue. Relative luminance 0.071; OKLCH L 43.1% C 0.199 H 273.9°. Best body text is #FFFFFF at 8.71:1 contrast (WCAG AA passes).

Color values

HEX	#3637BA
RGB	rgb(54, 55, 186)
HSL	hsl(240, 55%, 47%)
HSV	hsv(240, 71%, 73%)
CMYK	cmyk(71%, 70.4%, 0%, 27.1%)
CIE-LAB	lab(31.94, 42.40, -68.69)
CIE-LCH	lch(31.94, 80.72, 301.69°)
OKLab	oklab(43.11% 0.0134 -0.1986)
OKLCH	oklch(43.11% 0.199 273.9)
XYZ	xyz(11.7475, 7.0607, 47.1886)
Luminance	0.0706 (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

#3637BA #BAB936

analogous

#3679BA #3637BA #7736BA

triadic

#3637BA #BA3637 #37BA36

tetradic

#3637BA #BA3679 #BAB936 #36BA77

square

#3637BA #BA3679 #BAB936 #36BA77

split-complementary

#3637BA #BA7736 #79BA36

monochromatic

#1A1B5B #28298B #3637BA #5D5ED0 #8D8DDE

Accessibility & contrast

On white

8.71

#3637BA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#3637BA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3637BA

8.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3637BA	#FFFFFF	#000000	##FFFFFF
##3637BA	1.00	8.71	2.41	8.71
#FFFFFF	8.71	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051BE

Deuteranopia (green-blind)

#0045B8

Tritanopia (blue-blind)

#005B74

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3637ba;
/* rgb */ color: rgb(54, 55, 186);
/* oklch */ color: oklch(43.1% 0.199 273.9);

Tailwind

colors: {
  custom: {
    50: '#806fd0',
    500: '#3637ba',
    950: '#000000',
  },
}

SCSS

$custom: #3637ba;
$custom-light: #806fd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3637ba",
  "rgb": {
    "r": 54,
    "g": 55,
    "b": 186
  },
  "hsl": {
    "h": 239.545,
    "s": 55,
    "l": 47.059
  },
  "oklch": {
    "l": 0.43109,
    "c": 0.19905,
    "h": 273.9
  },
  "luminance": 0.07062
}

Semantic roles & 50–950 ramp

primary

#3637BA

secondary

#C8C884

accent

#DD49DE

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3637BA

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

Preview Lab → · Contrast checker → · Palette generator →