#3637CC#3637CC

#3637CC is a dark, highly saturated blue. Relative luminance 0.079; OKLCH L 44.9% C 0.221 H 272.8°. Best body text is #FFFFFF at 8.15:1 contrast (WCAG AA passes).

Color values

HEX	#3637CC
RGB	rgb(54, 55, 204)
HSL	hsl(240, 60%, 51%)
HSV	hsv(240, 74%, 80%)
CMYK	cmyk(73.5%, 73%, 0%, 20%)
CIE-LAB	lab(33.72, 48.37, -76.31)
CIE-LCH	lch(33.72, 90.35, 302.37°)
OKLab	oklab(44.91% 0.0106 -0.2208)
OKLCH	oklch(44.91% 0.221 272.8)
XYZ	xyz(13.7829, 7.8749, 57.9086)
Luminance	0.0788 (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

#3637CC #CCCB36

analogous

#3682CC #3637CC #8036CC

triadic

#3637CC #CC3637 #37CC36

tetradic

#3637CC #CC3682 #CCCB36 #36CC80

square

#3637CC #CC3682 #CCCB36 #36CC80

split-complementary

#3637CC #CC8036 #82CC36

monochromatic

#1B1C6C #28299D #3637CC #6768D8 #9898E5

Accessibility & contrast

On white

8.15

#3637CC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#3637CC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3637CC

8.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3637CC	#FFFFFF	#000000	##FFFFFF
##3637CC	1.00	8.15	2.58	8.15
#FFFFFF	8.15	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056D0

Deuteranopia (green-blind)

#0048C9

Tritanopia (blue-blind)

#00627E

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3637cc;
/* rgb */ color: rgb(54, 55, 204);
/* oklch */ color: oklch(44.9% 0.221 272.8);

Tailwind

colors: {
  custom: {
    50: '#8470dd',
    500: '#3637cc',
    950: '#000000',
  },
}

SCSS

$custom: #3637cc;
$custom-light: #8470dd;
$custom-dark: #000000;

JSON

{
  "hex": "#3637cc",
  "rgb": {
    "r": 54,
    "g": 55,
    "b": 204
  },
  "hsl": {
    "h": 239.6,
    "s": 59.524,
    "l": 50.588
  },
  "oklch": {
    "l": 0.44912,
    "c": 0.22109,
    "h": 272.8
  },
  "luminance": 0.07876
}

Semantic roles & 50–950 ramp

primary

#3637CC

secondary

#D0D08E

accent

#E245E3

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0715

muted

#7E7A83

Preview Lab

Preview with #3637CC

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

Preview Lab → · Contrast checker → · Palette generator →