#3440B5#3440B5

#3440B5 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 44.0% C 0.183 H 271.9°. Best body text is #FFFFFF at 8.25:1 contrast (WCAG AA passes).

Color values

HEX	#3440B5
RGB	rgb(52, 64, 181)
HSL	hsl(234, 55%, 46%)
HSV	hsv(234, 71%, 71%)
CMYK	cmyk(71.3%, 64.6%, 0%, 29%)
CIE-LAB	lab(33.42, 34.91, -63.32)
CIE-LCH	lch(33.42, 72.30, 298.87°)
OKLab	oklab(44.01% 0.006 -0.1829)
OKLCH	oklch(44.01% 0.183 271.9)
XYZ	xyz(11.5872, 7.7319, 44.5888)
Luminance	0.0773 (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

#3440B5 #B5A934

analogous

#3480B5 #3440B5 #6934B5

triadic

#3440B5 #B53440 #40B534

tetradic

#3440B5 #B53480 #B5A934 #34B569

square

#3440B5 #B53480 #B5A934 #34B569

split-complementary

#3440B5 #B56934 #80B534

monochromatic

#191E56 #262F85 #3440B5 #5762CF #878FDC

Accessibility & contrast

On white

8.25

#3440B5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#3440B5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3440B5

8.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3440B5	#FFFFFF	#000000	##FFFFFF
##3440B5	1.00	8.25	2.55	8.25
#FFFFFF	8.25	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B9

Deuteranopia (green-blind)

#0049B3

Tritanopia (blue-blind)

#005F74

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3440b5;
/* rgb */ color: rgb(52, 64, 181);
/* oklch */ color: oklch(44.0% 0.183 271.9);

Tailwind

colors: {
  custom: {
    50: '#7d75cc',
    500: '#3440b5',
    950: '#000000',
  },
}

SCSS

$custom: #3440b5;
$custom-light: #7d75cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3440b5",
  "rgb": {
    "r": 52,
    "g": 64,
    "b": 181
  },
  "hsl": {
    "h": 234.419,
    "s": 55.365,
    "l": 45.686
  },
  "oklch": {
    "l": 0.44006,
    "c": 0.18301,
    "h": 271.9
  },
  "luminance": 0.07733
}

Semantic roles & 50–950 ramp

primary

#3440B5

secondary

#C6C07F

accent

#D149DF

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3440B5

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

Preview Lab → · Contrast checker → · Palette generator →