#3631CF#3631CF

#3631CF is a dark, highly saturated blue. Relative luminance 0.075; OKLCH L 44.4% C 0.230 H 273.2°. Best body text is #FFFFFF at 8.41:1 contrast (WCAG AA passes).

Color values

HEX	#3631CF
RGB	rgb(54, 49, 207)
HSL	hsl(242, 62%, 50%)
HSV	hsv(242, 76%, 81%)
CMYK	cmyk(73.9%, 76.3%, 0%, 18.8%)
CIE-LAB	lab(32.89, 52.58, -79.44)
CIE-LCH	lch(32.89, 95.26, 303.50°)
OKLab	oklab(44.41% 0.0127 -0.2299)
OKLCH	oklch(44.41% 0.23 273.2)
XYZ	xyz(13.8784, 7.4845, 59.7326)
Luminance	0.0749 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blurple

#5539CC

ΔE00 3.76

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3631CF #CACF31

analogous

#317BCF #3631CF #8531CF

triadic

#3631CF #CF3631 #31CF36

tetradic

#3631CF #CF317B #CACF31 #31CF85

square

#3631CF #CF317B #CACF31 #31CF85

split-complementary

#3631CF #CF8531 #7BCF31

monochromatic

#1C196C #29259E #3631CF #6663DB #9794E6

Accessibility & contrast

On white

8.41

#3631CF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#3631CF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3631CF

8.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3631CF	#FFFFFF	#000000	##FFFFFF
##3631CF	1.00	8.41	2.50	8.41
#FFFFFF	8.41	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055D3

Deuteranopia (green-blind)

#0046CC

Tritanopia (blue-blind)

#00607F

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3631cf;
/* rgb */ color: rgb(54, 49, 207);
/* oklch */ color: oklch(44.4% 0.230 273.2);

Tailwind

colors: {
  custom: {
    50: '#856cdf',
    500: '#3631cf',
    950: '#000000',
  },
}

SCSS

$custom: #3631cf;
$custom-light: #856cdf;
$custom-dark: #000000;

JSON

{
  "hex": "#3631cf",
  "rgb": {
    "r": 54,
    "g": 49,
    "b": 207
  },
  "hsl": {
    "h": 241.899,
    "s": 62.205,
    "l": 50.196
  },
  "oklch": {
    "l": 0.44412,
    "c": 0.23022,
    "h": 273.2
  },
  "luminance": 0.07486
}

Semantic roles & 50–950 ramp

primary

#3631CF

secondary

#CFD18B

accent

#E543E0

background

#F9F6FD

surface

#F1EBFB

border

#CBC6D4

text

#0D0715

muted

#7E7A83

Preview Lab

Preview with #3631CF

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

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