#3440B1#3440B1

#3440B1 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.6% C 0.178 H 272.0°. Best body text is #FFFFFF at 8.35:1 contrast (WCAG AA passes).

Color values

HEX	#3440B1
RGB	rgb(52, 64, 177)
HSL	hsl(234, 55%, 45%)
HSV	hsv(234, 71%, 69%)
CMYK	cmyk(70.6%, 63.8%, 0%, 30.6%)
CIE-LAB	lab(33.07, 33.49, -61.51)
CIE-LCH	lch(33.07, 70.04, 298.57°)
OKLab	oklab(43.64% 0.0062 -0.1776)
OKLCH	oklch(43.64% 0.178 272)
XYZ	xyz(11.1827, 7.5701, 42.4583)
Luminance	0.0757 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.62

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3440B1 #B1A534

analogous

#347FB1 #3440B1 #6734B1

triadic

#3440B1 #B13440 #40B134

tetradic

#3440B1 #B1347F #B1A534 #34B167

square

#3440B1 #B1347F #B1A534 #34B167

split-complementary

#3440B1 #B16734 #7FB134

monochromatic

#181E52 #262F82 #3440B1 #5561CD #848DDB

Accessibility & contrast

On white

8.35

#3440B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#3440B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3440B1

8.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3440B1	#FFFFFF	#000000	##FFFFFF
##3440B1	1.00	8.35	2.51	8.35
#FFFFFF	8.35	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B5

Deuteranopia (green-blind)

#0048AF

Tritanopia (blue-blind)

#005D72

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3440b1;
/* rgb */ color: rgb(52, 64, 177);
/* oklch */ color: oklch(43.6% 0.178 272.0);

Tailwind

colors: {
  custom: {
    50: '#7c75c9',
    500: '#3440b1',
    950: '#000000',
  },
}

SCSS

$custom: #3440b1;
$custom-light: #7c75c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3440b1",
  "rgb": {
    "r": 52,
    "g": 64,
    "b": 177
  },
  "hsl": {
    "h": 234.24,
    "s": 54.585,
    "l": 44.902
  },
  "oklch": {
    "l": 0.43644,
    "c": 0.17773,
    "h": 272
  },
  "luminance": 0.07571
}

Semantic roles & 50–950 ramp

primary

#3440B1

secondary

#C5BE7C

accent

#D04ADE

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3440B1

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

Preview Lab → · Contrast checker → · Palette generator →