#3637CA#3637CA

#3637CA is a dark, highly saturated blue. Relative luminance 0.078; OKLCH L 44.7% C 0.219 H 272.9°. Best body text is #FFFFFF at 8.22:1 contrast (WCAG AA passes).

Color values

HEX	#3637CA
RGB	rgb(54, 55, 202)
HSL	hsl(240, 58%, 50%)
HSV	hsv(240, 73%, 79%)
CMYK	cmyk(73.3%, 72.8%, 0%, 20.8%)
CIE-LAB	lab(33.52, 47.72, -75.48)
CIE-LCH	lch(33.52, 89.30, 302.30°)
OKLab	oklab(44.71% 0.011 -0.2184)
OKLCH	oklch(44.71% 0.219 272.9)
XYZ	xyz(13.5446, 7.7795, 56.6534)
Luminance	0.0778 (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

#3637CA #CAC936

analogous

#3681CA #3637CA #7F36CA

triadic

#3637CA #CA3637 #37CA36

tetradic

#3637CA #CA3681 #CAC936 #36CA7F

square

#3637CA #CA3681 #CAC936 #36CA7F

split-complementary

#3637CA #CA7F36 #81CA36

monochromatic

#1C1C6A #29299A #3637CA #6667D7 #9797E4

Accessibility & contrast

On white

8.22

#3637CA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#3637CA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3637CA

8.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3637CA	#FFFFFF	#000000	##FFFFFF
##3637CA	1.00	8.22	2.56	8.22
#FFFFFF	8.22	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056CE

Deuteranopia (green-blind)

#0048C7

Tritanopia (blue-blind)

#00617D

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3637ca;
/* rgb */ color: rgb(54, 55, 202);
/* oklch */ color: oklch(44.7% 0.219 272.9);

Tailwind

colors: {
  custom: {
    50: '#846fdb',
    500: '#3637ca',
    950: '#000000',
  },
}

SCSS

$custom: #3637ca;
$custom-light: #846fdb;
$custom-dark: #000000;

JSON

{
  "hex": "#3637ca",
  "rgb": {
    "r": 54,
    "g": 55,
    "b": 202
  },
  "hsl": {
    "h": 239.595,
    "s": 58.268,
    "l": 50.196
  },
  "oklch": {
    "l": 0.44708,
    "c": 0.21868,
    "h": 272.9
  },
  "luminance": 0.07781
}

Semantic roles & 50–950 ramp

primary

#3637CA

secondary

#CFCF8D

accent

#E046E1

background

#F8F6FD

surface

#F0ECFB

border

#CBC7D4

text

#0D0715

muted

#7D7A83

Preview Lab

Preview with #3637CA

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

Preview Lab → · Contrast checker → · Palette generator →