#3631BD#3631BD

#3631BD is a dark, highly saturated blue. Relative luminance 0.067; OKLCH L 42.5% C 0.209 H 274.5°. Best body text is #FFFFFF at 9.01:1 contrast (WCAG AA passes).

Color values

HEX	#3631BD
RGB	rgb(54, 49, 189)
HSL	hsl(242, 59%, 47%)
HSV	hsv(242, 74%, 74%)
CMYK	cmyk(71.4%, 74.1%, 0%, 25.9%)
CIE-LAB	lab(31.01, 46.83, -72.01)
CIE-LCH	lch(31.01, 85.90, 303.04°)
OKLab	oklab(42.53% 0.0162 -0.2082)
OKLCH	oklch(42.53% 0.209 274.5)
XYZ	xyz(11.8019, 6.6539, 48.7966)
Luminance	0.0665 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Sapphire (survey)

#2138AB

ΔE00 4.25

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3631BD #B8BD31

analogous

#3172BD #3631BD #7C31BD

triadic

#3631BD #BD3631 #31BD36

tetradic

#3631BD #BD3172 #B8BD31 #31BD7C

square

#3631BD #BD3172 #B8BD31 #31BD7C

split-complementary

#3631BD #BD7C31 #72BD31

monochromatic

#1A185C #28248C #3631BD #5C58D4 #8B88E0

Accessibility & contrast

On white

9.01

#3631BD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#3631BD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3631BD

9.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3631BD	#FFFFFF	#000000	##FFFFFF
##3631BD	1.00	9.01	2.33	9.01
#FFFFFF	9.01	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FC1

Deuteranopia (green-blind)

#0042BA

Tritanopia (blue-blind)

#005974

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3631bd;
/* rgb */ color: rgb(54, 49, 189);
/* oklch */ color: oklch(42.5% 0.209 274.5);

Tailwind

colors: {
  custom: {
    50: '#816bd2',
    500: '#3631bd',
    950: '#000000',
  },
}

SCSS

$custom: #3631bd;
$custom-light: #816bd2;
$custom-dark: #000000;

JSON

{
  "hex": "#3631bd",
  "rgb": {
    "r": 54,
    "g": 49,
    "b": 189
  },
  "hsl": {
    "h": 242.143,
    "s": 58.824,
    "l": 46.667
  },
  "oklch": {
    "l": 0.42528,
    "c": 0.20888,
    "h": 274.5
  },
  "luminance": 0.06655
}

Semantic roles & 50–950 ramp

primary

#3631BD

secondary

#C7CA80

accent

#E246DC

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3631BD

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

Preview Lab → · Contrast checker → · Palette generator →