#343BB5#343BB5

#343BB5 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.1% C 0.189 H 272.8°. Best body text is #FFFFFF at 8.61:1 contrast (WCAG AA passes).

Color values

HEX	#343BB5
RGB	rgb(52, 59, 181)
HSL	hsl(237, 55%, 46%)
HSV	hsv(237, 71%, 71%)
CMYK	cmyk(71.3%, 67.4%, 0%, 29%)
CIE-LAB	lab(32.24, 38.04, -65.24)
CIE-LCH	lch(32.24, 75.53, 300.25°)
OKLab	oklab(43.15% 0.0093 -0.1886)
OKLCH	oklch(43.15% 0.189 272.8)
XYZ	xyz(11.3178, 7.1931, 44.4990)
Luminance	0.0719 (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

#343BB5 #B5AE34

analogous

#347BB5 #343BB5 #6D34B5

triadic

#343BB5 #B5343B #3BB534

tetradic

#343BB5 #B5347B #B5AE34 #34B56D

square

#343BB5 #B5347B #B5AE34 #34B56D

split-complementary

#343BB5 #B56D34 #7BB534

monochromatic

#191C56 #262C85 #343BB5 #575ECF #878CDC

Accessibility & contrast

On white

8.61

#343BB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#343BB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343BB5

8.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343BB5	#FFFFFF	#000000	##FFFFFF
##343BB5	1.00	8.61	2.44	8.61
#FFFFFF	8.61	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B9

Deuteranopia (green-blind)

#0046B3

Tritanopia (blue-blind)

#005C73

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #343bb5;
/* rgb */ color: rgb(52, 59, 181);
/* oklch */ color: oklch(43.1% 0.189 272.8);

Tailwind

colors: {
  custom: {
    50: '#7e71cc',
    500: '#343bb5',
    950: '#000000',
  },
}

SCSS

$custom: #343bb5;
$custom-light: #7e71cc;
$custom-dark: #000000;

JSON

{
  "hex": "#343bb5",
  "rgb": {
    "r": 52,
    "g": 59,
    "b": 181
  },
  "hsl": {
    "h": 236.744,
    "s": 55.365,
    "l": 45.686
  },
  "oklch": {
    "l": 0.43149,
    "c": 0.1888,
    "h": 272.8
  },
  "luminance": 0.07194
}

Semantic roles & 50–950 ramp

primary

#343BB5

secondary

#C6C27F

accent

#D749DF

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #343BB5

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

Preview Lab → · Contrast checker → · Palette generator →