#3631C9#3631C9

#3631C9 is a dark, highly saturated blue. Relative luminance 0.072; OKLCH L 43.8% C 0.223 H 273.6°. Best body text is #FFFFFF at 8.61:1 contrast (WCAG AA passes).

Color values

HEX	#3631C9
RGB	rgb(54, 49, 201)
HSL	hsl(242, 61%, 49%)
HSV	hsv(242, 76%, 79%)
CMYK	cmyk(73.1%, 75.6%, 0%, 21.2%)
CIE-LAB	lab(32.25, 50.68, -77.00)
CIE-LCH	lch(32.25, 92.18, 303.36°)
OKLab	oklab(43.78% 0.0139 -0.2228)
OKLCH	oklch(43.78% 0.223 273.6)
XYZ	xyz(13.1587, 7.1966, 55.9426)
Luminance	0.0720 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blurple

#5539CC

ΔE00 3.99

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3631C9 #C4C931

analogous

#3178C9 #3631C9 #8231C9

triadic

#3631C9 #C93631 #31C936

tetradic

#3631C9 #C93178 #C4C931 #31C982

square

#3631C9 #C93178 #C4C931 #31C982

split-complementary

#3631C9 #C98231 #78C931

monochromatic

#1C1967 #292598 #3631C9 #635FD8 #9390E4

Accessibility & contrast

On white

8.61

#3631C9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#3631C9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3631C9

8.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3631C9	#FFFFFF	#000000	##FFFFFF
##3631C9	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)

#0053CD

Deuteranopia (green-blind)

#0045C6

Tritanopia (blue-blind)

#005E7B

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3631c9;
/* rgb */ color: rgb(54, 49, 201);
/* oklch */ color: oklch(43.8% 0.223 273.6);

Tailwind

colors: {
  custom: {
    50: '#846cdb',
    500: '#3631c9',
    950: '#000000',
  },
}

SCSS

$custom: #3631c9;
$custom-light: #846cdb;
$custom-dark: #000000;

JSON

{
  "hex": "#3631c9",
  "rgb": {
    "r": 54,
    "g": 49,
    "b": 201
  },
  "hsl": {
    "h": 241.974,
    "s": 60.8,
    "l": 49.02
  },
  "oklch": {
    "l": 0.43778,
    "c": 0.22319,
    "h": 273.6
  },
  "luminance": 0.07198
}

Semantic roles & 50–950 ramp

primary

#3631C9

secondary

#CCCF87

accent

#E444DF

background

#F9F6FD

surface

#F1EBFB

border

#CBC6D4

text

#0D0715

muted

#7E7A83

Preview Lab

Preview with #3631C9

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

Preview Lab → · Contrast checker → · Palette generator →