#3440B7#3440B7

#3440B7 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.2% C 0.186 H 271.8°. Best body text is #FFFFFF at 8.19:1 contrast (WCAG AA passes).

Color values

HEX	#3440B7
RGB	rgb(52, 64, 183)
HSL	hsl(235, 56%, 46%)
HSV	hsv(235, 72%, 72%)
CMYK	cmyk(71.6%, 65%, 0%, 28.2%)
CIE-LAB	lab(33.59, 35.62, -64.21)
CIE-LCH	lch(33.59, 73.43, 299.02°)
OKLab	oklab(44.19% 0.0058 -0.1855)
OKLCH	oklch(44.19% 0.186 271.8)
XYZ	xyz(11.7939, 7.8146, 45.6774)
Luminance	0.0782 (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

#3440B7 #B7AB34

analogous

#3481B7 #3440B7 #6934B7

triadic

#3440B7 #B73440 #40B734

tetradic

#3440B7 #B73481 #B7AB34 #34B769

square

#3440B7 #B73481 #B7AB34 #34B769

split-complementary

#3440B7 #B76934 #81B734

monochromatic

#191F58 #262F87 #3440B7 #5963D0 #8890DD

Accessibility & contrast

On white

8.19

#3440B7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#3440B7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3440B7

8.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3440B7	#FFFFFF	#000000	##FFFFFF
##3440B7	1.00	8.19	2.56	8.19
#FFFFFF	8.19	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055BB

Deuteranopia (green-blind)

#0049B5

Tritanopia (blue-blind)

#005F75

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3440b7;
/* rgb */ color: rgb(52, 64, 183);
/* oklch */ color: oklch(44.2% 0.186 271.8);

Tailwind

colors: {
  custom: {
    50: '#7e75ce',
    500: '#3440b7',
    950: '#000000',
  },
}

SCSS

$custom: #3440b7;
$custom-light: #7e75ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3440b7",
  "rgb": {
    "r": 52,
    "g": 64,
    "b": 183
  },
  "hsl": {
    "h": 234.504,
    "s": 55.745,
    "l": 46.078
  },
  "oklch": {
    "l": 0.44188,
    "c": 0.18562,
    "h": 271.8
  },
  "luminance": 0.07816
}

Semantic roles & 50–950 ramp

primary

#3440B7

secondary

#C7C180

accent

#D149DF

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #3440B7

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

Preview Lab → · Contrast checker → · Palette generator →