#3631BE#3631BE

#3631BE is a dark, highly saturated blue. Relative luminance 0.067; OKLCH L 42.6% C 0.210 H 274.4°. Best body text is #FFFFFF at 8.98:1 contrast (WCAG AA passes).

Color values

HEX	#3631BE
RGB	rgb(54, 49, 190)
HSL	hsl(242, 59%, 47%)
HSV	hsv(242, 74%, 75%)
CMYK	cmyk(71.6%, 74.2%, 0%, 25.5%)
CIE-LAB	lab(31.11, 47.16, -72.43)
CIE-LCH	lch(31.11, 86.43, 303.07°)
OKLab	oklab(42.63% 0.016 -0.2095)
OKLCH	oklch(42.63% 0.21 274.4)
XYZ	xyz(11.9108, 6.6974, 49.3702)
Luminance	0.0670 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Sapphire (survey)

#2138AB

ΔE00 4.34

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3631BE #B9BE31

analogous

#3172BE #3631BE #7D31BE

triadic

#3631BE #BE3631 #31BE36

tetradic

#3631BE #BE3172 #B9BE31 #31BE7D

square

#3631BE #BE3172 #B9BE31 #31BE7D

split-complementary

#3631BE #BE7D31 #72BE31

monochromatic

#1A185D #28248D #3631BE #5D58D4 #8C89E1

Accessibility & contrast

On white

8.98

#3631BE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#3631BE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3631BE

8.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3631BE	#FFFFFF	#000000	##FFFFFF
##3631BE	1.00	8.98	2.34	8.98
#FFFFFF	8.98	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050C2

Deuteranopia (green-blind)

#0043BB

Tritanopia (blue-blind)

#005A75

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3631be;
/* rgb */ color: rgb(54, 49, 190);
/* oklch */ color: oklch(42.6% 0.210 274.4);

Tailwind

colors: {
  custom: {
    50: '#816bd3',
    500: '#3631be',
    950: '#000000',
  },
}

SCSS

$custom: #3631be;
$custom-light: #816bd3;
$custom-dark: #000000;

JSON

{
  "hex": "#3631be",
  "rgb": {
    "r": 54,
    "g": 49,
    "b": 190
  },
  "hsl": {
    "h": 242.128,
    "s": 58.996,
    "l": 46.863
  },
  "oklch": {
    "l": 0.42631,
    "c": 0.21009,
    "h": 274.4
  },
  "luminance": 0.06699
}

Semantic roles & 50–950 ramp

primary

#3631BE

secondary

#C8CA80

accent

#E246DD

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3631BE

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

Preview Lab → · Contrast checker → · Palette generator →