#343B9B#343B9B

#343B9B is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.8% C 0.154 H 274.1°. Best body text is #FFFFFF at 9.35:1 contrast (WCAG AA passes).

Color values

HEX	#343B9B
RGB	rgb(52, 59, 155)
HSL	hsl(236, 50%, 41%)
HSV	hsv(236, 66%, 61%)
CMYK	cmyk(66.5%, 61.9%, 0%, 39.2%)
CIE-LAB	lab(29.97, 28.86, -53.35)
CIE-LCH	lch(29.97, 60.65, 298.41°)
OKLab	oklab(40.78% 0.0111 -0.1537)
OKLCH	oklch(40.78% 0.154 274.1)
XYZ	xyz(8.8946, 6.2238, 31.7366)
Luminance	0.0622 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343B9B #9B9434

analogous

#346E9B #343B9B #60349B

triadic

#343B9B #9B343B #3B9B34

tetradic

#343B9B #9B346E #9B9434 #349B60

square

#343B9B #9B346E #9B9434 #349B60

split-complementary

#343B9B #9B6034 #6E9B34

monochromatic

#15183F #252A6D #343B9B #4A52C2 #787ED2

Accessibility & contrast

On white

9.35

#343B9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#343B9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343B9B

9.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343B9B	#FFFFFF	#000000	##FFFFFF
##343B9B	1.00	9.35	2.25	9.35
#FFFFFF	9.35	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B9E

Deuteranopia (green-blind)

#004299

Tritanopia (blue-blind)

#005365

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #343b9b;
/* rgb */ color: rgb(52, 59, 155);
/* oklch */ color: oklch(40.8% 0.154 274.1);

Tailwind

colors: {
  custom: {
    50: '#7871b9',
    500: '#343b9b',
    950: '#000000',
  },
}

SCSS

$custom: #343b9b;
$custom-light: #7871b9;
$custom-dark: #000000;

JSON

{
  "hex": "#343b9b",
  "rgb": {
    "r": 52,
    "g": 59,
    "b": 155
  },
  "hsl": {
    "h": 235.922,
    "s": 49.758,
    "l": 40.588
  },
  "oklch": {
    "l": 0.40785,
    "c": 0.1541,
    "h": 274.1
  },
  "luminance": 0.06225
}

Semantic roles & 50–950 ramp

primary

#343B9B

secondary

#BAB571

accent

#D04FD9

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #343B9B

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

Preview Lab → · Contrast checker → · Palette generator →