#3440B8#3440B8

#3440B8 is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.3% C 0.187 H 271.8°. Best body text is #FFFFFF at 8.17:1 contrast (WCAG AA passes).

Color values

HEX	#3440B8
RGB	rgb(52, 64, 184)
HSL	hsl(235, 56%, 46%)
HSV	hsv(235, 72%, 72%)
CMYK	cmyk(71.7%, 65.2%, 0%, 27.8%)
CIE-LAB	lab(33.68, 35.98, -64.66)
CIE-LCH	lch(33.68, 73.99, 299.09°)
OKLab	oklab(44.28% 0.0058 -0.1868)
OKLCH	oklch(44.28% 0.187 271.8)
XYZ	xyz(11.8984, 7.8564, 46.2275)
Luminance	0.0786 (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

#3440B8 #B8AC34

analogous

#3482B8 #3440B8 #6A34B8

triadic

#3440B8 #B83440 #40B834

tetradic

#3440B8 #B83482 #B8AC34 #34B86A

square

#3440B8 #B83482 #B8AC34 #34B86A

split-complementary

#3440B8 #B86A34 #82B834

monochromatic

#191F59 #272F88 #3440B8 #5964D0 #8991DE

Accessibility & contrast

On white

8.17

#3440B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#3440B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3440B8

8.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3440B8	#FFFFFF	#000000	##FFFFFF
##3440B8	1.00	8.17	2.57	8.17
#FFFFFF	8.17	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055BC

Deuteranopia (green-blind)

#0049B6

Tritanopia (blue-blind)

#006076

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3440b8;
/* rgb */ color: rgb(52, 64, 184);
/* oklch */ color: oklch(44.3% 0.187 271.8);

Tailwind

colors: {
  custom: {
    50: '#7e75ce',
    500: '#3440b8',
    950: '#000000',
  },
}

SCSS

$custom: #3440b8;
$custom-light: #7e75ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3440b8",
  "rgb": {
    "r": 52,
    "g": 64,
    "b": 184
  },
  "hsl": {
    "h": 234.545,
    "s": 55.932,
    "l": 46.275
  },
  "oklch": {
    "l": 0.4428,
    "c": 0.18693,
    "h": 271.8
  },
  "luminance": 0.07858
}

Semantic roles & 50–950 ramp

primary

#3440B8

secondary

#C8C180

accent

#D249DF

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #3440B8

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

Preview Lab → · Contrast checker → · Palette generator →