#3531BD#3531BD

#3531BD is a dark, highly saturated blue. Relative luminance 0.066; OKLCH L 42.5% C 0.209 H 274.1°. Best body text is #FFFFFF at 9.03:1 contrast (WCAG AA passes).

Color values

HEX	#3531BD
RGB	rgb(53, 49, 189)
HSL	hsl(242, 59%, 47%)
HSV	hsv(242, 74%, 74%)
CMYK	cmyk(72%, 74.1%, 0%, 25.9%)
CIE-LAB	lab(30.94, 46.74, -72.12)
CIE-LCH	lch(30.94, 85.94, 302.95°)
OKLab	oklab(42.47% 0.015 -0.2086)
OKLCH	oklch(42.47% 0.209 274.1)
XYZ	xyz(11.7488, 6.6265, 48.7941)
Luminance	0.0663 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Sapphire (survey)

#2138AB

ΔE00 4.18

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3531BD #B9BD31

analogous

#3173BD #3531BD #7B31BD

triadic

#3531BD #BD3531 #31BD35

tetradic

#3531BD #BD3173 #B9BD31 #31BD7B

square

#3531BD #BD3173 #B9BD31 #31BD7B

split-complementary

#3531BD #BD7B31 #73BD31

monochromatic

#1A185C #27248C #3531BD #5B58D4 #8B88E0

Accessibility & contrast

On white

9.03

#3531BD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#3531BD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3531BD

9.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3531BD	#FFFFFF	#000000	##FFFFFF
##3531BD	1.00	9.03	2.33	9.03
#FFFFFF	9.03	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.03	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: #3531bd;
/* rgb */ color: rgb(53, 49, 189);
/* oklch */ color: oklch(42.5% 0.209 274.1);

Tailwind

colors: {
  custom: {
    50: '#816bd2',
    500: '#3531bd',
    950: '#000000',
  },
}

SCSS

$custom: #3531bd;
$custom-light: #816bd2;
$custom-dark: #000000;

JSON

{
  "hex": "#3531bd",
  "rgb": {
    "r": 53,
    "g": 49,
    "b": 189
  },
  "hsl": {
    "h": 241.714,
    "s": 58.824,
    "l": 46.667
  },
  "oklch": {
    "l": 0.42465,
    "c": 0.20913,
    "h": 274.1
  },
  "luminance": 0.06628
}

Semantic roles & 50–950 ramp

primary

#3531BD

secondary

#C8CA80

accent

#E246DE

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3531BD

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

Preview Lab → · Contrast checker → · Palette generator →