#3440BB#3440BB

#3440BB is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.6% C 0.191 H 271.7°. Best body text is #FFFFFF at 8.09:1 contrast (WCAG AA passes).

Color values

HEX	#3440BB
RGB	rgb(52, 64, 187)
HSL	hsl(235, 56%, 47%)
HSV	hsv(235, 72%, 73%)
CMYK	cmyk(72.2%, 65.8%, 0%, 26.7%)
CIE-LAB	lab(33.95, 37.03, -65.99)
CIE-LCH	lch(33.95, 75.67, 299.30°)
OKLab	oklab(44.56% 0.0055 -0.1907)
OKLCH	oklch(44.56% 0.191 271.7)
XYZ	xyz(12.2162, 7.9835, 47.9012)
Luminance	0.0799 (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

#3440BB #BBAF34

analogous

#3483BB #3440BB #6C34BB

triadic

#3440BB #BB3440 #40BB34

tetradic

#3440BB #BB3483 #BBAF34 #34BB6C

square

#3440BB #BB3483 #BBAF34 #34BB6C

split-complementary

#3440BB #BB6C34 #83BB34

monochromatic

#191F5B #27308B #3440BB #5B65D1 #8B92DF

Accessibility & contrast

On white

8.09

#3440BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#3440BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3440BB

8.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3440BB	#FFFFFF	#000000	##FFFFFF
##3440BB	1.00	8.09	2.60	8.09
#FFFFFF	8.09	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056BF

Deuteranopia (green-blind)

#004AB9

Tritanopia (blue-blind)

#006178

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3440bb;
/* rgb */ color: rgb(52, 64, 187);
/* oklch */ color: oklch(44.6% 0.191 271.7);

Tailwind

colors: {
  custom: {
    50: '#7f75d1',
    500: '#3440bb',
    950: '#000000',
  },
}

SCSS

$custom: #3440bb;
$custom-light: #7f75d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3440bb",
  "rgb": {
    "r": 52,
    "g": 64,
    "b": 187
  },
  "hsl": {
    "h": 234.667,
    "s": 56.485,
    "l": 46.863
  },
  "oklch": {
    "l": 0.44557,
    "c": 0.19082,
    "h": 271.7
  },
  "luminance": 0.07985
}

Semantic roles & 50–950 ramp

primary

#3440BB

secondary

#C9C382

accent

#D248E0

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #3440BB

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

Preview Lab → · Contrast checker → · Palette generator →