#343BB4#343BB4

#343BB4 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.1% C 0.188 H 272.9°. Best body text is #FFFFFF at 8.64:1 contrast (WCAG AA passes).

Color values

HEX	#343BB4
RGB	rgb(52, 59, 180)
HSL	hsl(237, 55%, 45%)
HSV	hsv(237, 71%, 71%)
CMYK	cmyk(71.1%, 67.2%, 0%, 29.4%)
CIE-LAB	lab(32.15, 37.70, -64.80)
CIE-LCH	lch(32.15, 74.97, 300.19°)
OKLab	oklab(43.05% 0.0094 -0.1873)
OKLCH	oklch(43.05% 0.188 272.9)
XYZ	xyz(11.2156, 7.1522, 43.9606)
Luminance	0.0715 (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

#343BB4 #B4AD34

analogous

#347BB4 #343BB4 #6D34B4

triadic

#343BB4 #B4343B #3BB434

tetradic

#343BB4 #B4347B #B4AD34 #34B46D

square

#343BB4 #B4347B #B4AD34 #34B46D

split-complementary

#343BB4 #B46D34 #7BB434

monochromatic

#191C55 #262B85 #343BB4 #575DCE #868BDC

Accessibility & contrast

On white

8.64

#343BB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#343BB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343BB4

8.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343BB4	#FFFFFF	#000000	##FFFFFF
##343BB4	1.00	8.64	2.43	8.64
#FFFFFF	8.64	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B8

Deuteranopia (green-blind)

#0046B2

Tritanopia (blue-blind)

#005B72

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #343bb4;
/* rgb */ color: rgb(52, 59, 180);
/* oklch */ color: oklch(43.1% 0.188 272.9);

Tailwind

colors: {
  custom: {
    50: '#7e71cc',
    500: '#343bb4',
    950: '#000000',
  },
}

SCSS

$custom: #343bb4;
$custom-light: #7e71cc;
$custom-dark: #000000;

JSON

{
  "hex": "#343bb4",
  "rgb": {
    "r": 52,
    "g": 59,
    "b": 180
  },
  "hsl": {
    "h": 236.719,
    "s": 55.172,
    "l": 45.49
  },
  "oklch": {
    "l": 0.43054,
    "c": 0.18752,
    "h": 272.9
  },
  "luminance": 0.07153
}

Semantic roles & 50–950 ramp

primary

#343BB4

secondary

#C6C27E

accent

#D649DF

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #343BB4

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

Preview Lab → · Contrast checker → · Palette generator →