#3531B1#3531B1

#3531B1 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 41.2% C 0.194 H 275.1°. Best body text is #FFFFFF at 9.44:1 contrast (WCAG AA passes).

Color values

HEX	#3531B1
RGB	rgb(53, 49, 177)
HSL	hsl(242, 57%, 44%)
HSV	hsv(242, 72%, 69%)
CMYK	cmyk(70.1%, 72.3%, 0%, 30.6%)
CIE-LAB	lab(29.73, 42.80, -66.99)
CIE-LCH	lch(29.73, 79.50, 302.57°)
OKLab	oklab(41.24% 0.0172 -0.1936)
OKLCH	oklch(41.24% 0.194 275.1)
XYZ	xyz(10.4997, 6.1268, 42.2157)
Luminance	0.0613 (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

#3531B1 #ADB131

analogous

#316DB1 #3531B1 #7531B1

triadic

#3531B1 #B13531 #31B135

tetradic

#3531B1 #B1316D #ADB131 #31B175

square

#3531B1 #B1316D #ADB131 #31B175

split-complementary

#3531B1 #B17531 #6DB131

monochromatic

#181651 #272481 #3531B1 #5451CF #8380DC

Accessibility & contrast

On white

9.44

#3531B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#3531B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3531B1

9.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3531B1	#FFFFFF	#000000	##FFFFFF
##3531B1	1.00	9.44	2.23	9.44
#FFFFFF	9.44	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CB5

Deuteranopia (green-blind)

#0040AF

Tritanopia (blue-blind)

#00556E

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #3531b1;
/* rgb */ color: rgb(53, 49, 177);
/* oklch */ color: oklch(41.2% 0.194 275.1);

Tailwind

colors: {
  custom: {
    50: '#7e6bca',
    500: '#3531b1',
    950: '#000000',
  },
}

SCSS

$custom: #3531b1;
$custom-light: #7e6bca;
$custom-dark: #000000;

JSON

{
  "hex": "#3531b1",
  "rgb": {
    "r": 53,
    "g": 49,
    "b": 177
  },
  "hsl": {
    "h": 241.875,
    "s": 56.637,
    "l": 44.314
  },
  "oklch": {
    "l": 0.41241,
    "c": 0.19441,
    "h": 275.1
  },
  "luminance": 0.06128
}

Semantic roles & 50–950 ramp

primary

#3531B1

secondary

#C3C579

accent

#E048DB

background

#F8F6FC

surface

#F0EBF8

border

#CBC6D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3531B1

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

Preview Lab → · Contrast checker → · Palette generator →