#3637B7#3637B7

#3637B7 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.8% C 0.195 H 274.1°. Best body text is #FFFFFF at 8.80:1 contrast (WCAG AA passes).

Color values

HEX	#3637B7
RGB	rgb(54, 55, 183)
HSL	hsl(240, 54%, 46%)
HSV	hsv(240, 70%, 72%)
CMYK	cmyk(70.5%, 69.9%, 0%, 28.2%)
CIE-LAB	lab(31.66, 41.39, -67.39)
CIE-LCH	lch(31.66, 79.08, 301.56°)
OKLab	oklab(42.82% 0.0139 -0.1948)
OKLCH	oklch(42.82% 0.195 274.1)
XYZ	xyz(11.4319, 6.9344, 45.5266)
Luminance	0.0694 (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

#3637B7 #B7B636

analogous

#3678B7 #3637B7 #7636B7

triadic

#3637B7 #B73637 #37B736

tetradic

#3637B7 #B73678 #B7B636 #36B776

square

#3637B7 #B73678 #B7B636 #36B776

split-complementary

#3637B7 #B77636 #78B736

monochromatic

#1A1B58 #282988 #3637B7 #5B5CCF #8B8BDD

Accessibility & contrast

On white

8.80

#3637B7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#3637B7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3637B7

8.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3637B7	#FFFFFF	#000000	##FFFFFF
##3637B7	1.00	8.80	2.39	8.80
#FFFFFF	8.80	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050BB

Deuteranopia (green-blind)

#0044B5

Tritanopia (blue-blind)

#005A73

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3637b7;
/* rgb */ color: rgb(54, 55, 183);
/* oklch */ color: oklch(42.8% 0.195 274.1);

Tailwind

colors: {
  custom: {
    50: '#7f6fce',
    500: '#3637b7',
    950: '#000000',
  },
}

SCSS

$custom: #3637b7;
$custom-light: #7f6fce;
$custom-dark: #000000;

JSON

{
  "hex": "#3637b7",
  "rgb": {
    "r": 54,
    "g": 55,
    "b": 183
  },
  "hsl": {
    "h": 239.535,
    "s": 54.43,
    "l": 46.471
  },
  "oklch": {
    "l": 0.42815,
    "c": 0.19528,
    "h": 274.1
  },
  "luminance": 0.06936
}

Semantic roles & 50–950 ramp

primary

#3637B7

secondary

#C7C682

accent

#DD4ADE

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3637B7

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

Preview Lab → · Contrast checker → · Palette generator →