#3531B3#3531B3

#3531B3 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 41.4% C 0.197 H 274.9°. Best body text is #FFFFFF at 9.37:1 contrast (WCAG AA passes).

Color values

HEX	#3531B3
RGB	rgb(53, 49, 179)
HSL	hsl(242, 57%, 45%)
HSV	hsv(242, 73%, 70%)
CMYK	cmyk(70.4%, 72.6%, 0%, 29.8%)
CIE-LAB	lab(29.93, 43.46, -67.86)
CIE-LCH	lch(29.93, 80.58, 302.64°)
OKLab	oklab(41.44% 0.0168 -0.1962)
OKLCH	oklch(41.44% 0.197 274.9)
XYZ	xyz(10.7005, 6.2072, 43.2733)
Luminance	0.0621 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3531B3 #AFB331

analogous

#316EB3 #3531B3 #7631B3

triadic

#3531B3 #B33531 #31B335

tetradic

#3531B3 #B3316E #AFB331 #31B376

square

#3531B3 #B3316E #AFB331 #31B376

split-complementary

#3531B3 #B37631 #6EB331

monochromatic

#191753 #272483 #3531B3 #5652D0 #8482DD

Accessibility & contrast

On white

9.37

#3531B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#3531B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3531B3

9.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3531B3	#FFFFFF	#000000	##FFFFFF
##3531B3	1.00	9.37	2.24	9.37
#FFFFFF	9.37	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CB7

Deuteranopia (green-blind)

#0040B1

Tritanopia (blue-blind)

#00566F

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #3531b3;
/* rgb */ color: rgb(53, 49, 179);
/* oklch */ color: oklch(41.4% 0.197 274.9);

Tailwind

colors: {
  custom: {
    50: '#7f6bcb',
    500: '#3531b3',
    950: '#000000',
  },
}

SCSS

$custom: #3531b3;
$custom-light: #7f6bcb;
$custom-dark: #000000;

JSON

{
  "hex": "#3531b3",
  "rgb": {
    "r": 53,
    "g": 49,
    "b": 179
  },
  "hsl": {
    "h": 241.846,
    "s": 57.018,
    "l": 44.706
  },
  "oklch": {
    "l": 0.41443,
    "c": 0.19689,
    "h": 274.9
  },
  "luminance": 0.06208
}

Semantic roles & 50–950 ramp

primary

#3531B3

secondary

#C4C67A

accent

#E048DC

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3531B3

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

Preview Lab → · Contrast checker → · Palette generator →