#3631BA#3631BA

#3631BA is a dark, highly saturated blue. Relative luminance 0.065; OKLCH L 42.2% C 0.205 H 274.7°. Best body text is #FFFFFF at 9.11:1 contrast (WCAG AA passes).

Color values

HEX	#3631BA
RGB	rgb(54, 49, 186)
HSL	hsl(242, 58%, 46%)
HSV	hsv(242, 74%, 73%)
CMYK	cmyk(71%, 73.7%, 0%, 27.1%)
CIE-LAB	lab(30.70, 45.86, -70.74)
CIE-LCH	lch(30.70, 84.30, 302.95°)
OKLab	oklab(42.22% 0.0168 -0.2045)
OKLCH	oklch(42.22% 0.205 274.7)
XYZ	xyz(11.4796, 6.5250, 47.0993)
Luminance	0.0653 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Sapphire (survey)

#2138AB

ΔE00 4.01

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3631BA #B5BA31

analogous

#3170BA #3631BA #7A31BA

triadic

#3631BA #BA3631 #31BA36

tetradic

#3631BA #BA3170 #B5BA31 #31BA7A

square

#3631BA #BA3170 #B5BA31 #31BA7A

split-complementary

#3631BA #BA7A31 #70BA31

monochromatic

#1A1759 #28248A #3631BA #5A56D2 #8986DF

Accessibility & contrast

On white

9.11

#3631BA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#3631BA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3631BA

9.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3631BA	#FFFFFF	#000000	##FFFFFF
##3631BA	1.00	9.11	2.31	9.11
#FFFFFF	9.11	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EBE

Deuteranopia (green-blind)

#0042B8

Tritanopia (blue-blind)

#005873

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3631ba;
/* rgb */ color: rgb(54, 49, 186);
/* oklch */ color: oklch(42.2% 0.205 274.7);

Tailwind

colors: {
  custom: {
    50: '#816bd0',
    500: '#3631ba',
    950: '#000000',
  },
}

SCSS

$custom: #3631ba;
$custom-light: #816bd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3631ba",
  "rgb": {
    "r": 54,
    "g": 49,
    "b": 186
  },
  "hsl": {
    "h": 242.19,
    "s": 58.298,
    "l": 46.078
  },
  "oklch": {
    "l": 0.4222,
    "c": 0.20524,
    "h": 274.7
  },
  "luminance": 0.06526
}

Semantic roles & 50–950 ramp

primary

#3631BA

secondary

#C6C97E

accent

#E246DC

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3631BA

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

Preview Lab → · Contrast checker → · Palette generator →