#343EB5#343EB5

#343EB5 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.7% C 0.185 H 272.3°. Best body text is #FFFFFF at 8.39:1 contrast (WCAG AA passes).

Color values

HEX	#343EB5
RGB	rgb(52, 62, 181)
HSL	hsl(235, 55%, 46%)
HSV	hsv(235, 71%, 71%)
CMYK	cmyk(71.3%, 65.7%, 0%, 29%)
CIE-LAB	lab(32.94, 36.18, -64.10)
CIE-LCH	lch(32.94, 73.60, 299.44°)
OKLab	oklab(43.66% 0.0073 -0.1852)
OKLCH	oklch(43.66% 0.185 272.3)
XYZ	xyz(11.4765, 7.5104, 44.5519)
Luminance	0.0751 (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

#343EB5 #B5AB34

analogous

#347EB5 #343EB5 #6A34B5

triadic

#343EB5 #B5343E #3EB534

tetradic

#343EB5 #B5347E #B5AB34 #34B56A

square

#343EB5 #B5347E #B5AB34 #34B56A

split-complementary

#343EB5 #B56A34 #7EB534

monochromatic

#191D56 #262E85 #343EB5 #5761CF #878EDC

Accessibility & contrast

On white

8.39

#343EB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#343EB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343EB5

8.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343EB5	#FFFFFF	#000000	##FFFFFF
##343EB5	1.00	8.39	2.50	8.39
#FFFFFF	8.39	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B9

Deuteranopia (green-blind)

#0048B3

Tritanopia (blue-blind)

#005D74

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #343eb5;
/* rgb */ color: rgb(52, 62, 181);
/* oklch */ color: oklch(43.7% 0.185 272.3);

Tailwind

colors: {
  custom: {
    50: '#7e73cc',
    500: '#343eb5',
    950: '#000000',
  },
}

SCSS

$custom: #343eb5;
$custom-light: #7e73cc;
$custom-dark: #000000;

JSON

{
  "hex": "#343eb5",
  "rgb": {
    "r": 52,
    "g": 62,
    "b": 181
  },
  "hsl": {
    "h": 235.349,
    "s": 55.365,
    "l": 45.686
  },
  "oklch": {
    "l": 0.43658,
    "c": 0.18535,
    "h": 272.3
  },
  "luminance": 0.07512
}

Semantic roles & 50–950 ramp

primary

#343EB5

secondary

#C6C17F

accent

#D349DF

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #343EB5

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

Preview Lab → · Contrast checker → · Palette generator →