#3440B2#3440B2

#3440B2 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.7% C 0.179 H 272.0°. Best body text is #FFFFFF at 8.33:1 contrast (WCAG AA passes).

Color values

HEX	#3440B2
RGB	rgb(52, 64, 178)
HSL	hsl(234, 55%, 45%)
HSV	hsv(234, 71%, 70%)
CMYK	cmyk(70.8%, 64%, 0%, 30.2%)
CIE-LAB	lab(33.16, 33.85, -61.96)
CIE-LCH	lch(33.16, 70.61, 298.64°)
OKLab	oklab(43.73% 0.0061 -0.1789)
OKLCH	oklch(43.73% 0.179 272)
XYZ	xyz(11.2827, 7.6101, 42.9851)
Luminance	0.0761 (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

#3440B2 #B2A634

analogous

#347FB2 #3440B2 #6734B2

triadic

#3440B2 #B23440 #40B234

tetradic

#3440B2 #B2347F #B2A634 #34B267

square

#3440B2 #B2347F #B2A634 #34B267

split-complementary

#3440B2 #B26734 #7FB234

monochromatic

#181E53 #262F83 #3440B2 #5661CE #858DDB

Accessibility & contrast

On white

8.33

#3440B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#3440B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3440B2

8.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3440B2	#FFFFFF	#000000	##FFFFFF
##3440B2	1.00	8.33	2.52	8.33
#FFFFFF	8.33	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B6

Deuteranopia (green-blind)

#0048B0

Tritanopia (blue-blind)

#005E73

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3440b2;
/* rgb */ color: rgb(52, 64, 178);
/* oklch */ color: oklch(43.7% 0.179 272.0);

Tailwind

colors: {
  custom: {
    50: '#7d75ca',
    500: '#3440b2',
    950: '#000000',
  },
}

SCSS

$custom: #3440b2;
$custom-light: #7d75ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3440b2",
  "rgb": {
    "r": 52,
    "g": 64,
    "b": 178
  },
  "hsl": {
    "h": 234.286,
    "s": 54.783,
    "l": 45.098
  },
  "oklch": {
    "l": 0.43734,
    "c": 0.17905,
    "h": 272
  },
  "luminance": 0.07611
}

Semantic roles & 50–950 ramp

primary

#3440B2

secondary

#C5BE7D

accent

#D04ADE

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3440B2

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

Preview Lab → · Contrast checker → · Palette generator →