#343F9D#343F9D

#343F9D is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.7% C 0.152 H 272.9°. Best body text is #FFFFFF at 8.96:1 contrast (WCAG AA passes).

Color values

HEX	#343F9D
RGB	rgb(52, 63, 157)
HSL	hsl(234, 50%, 41%)
HSV	hsv(234, 67%, 62%)
CMYK	cmyk(66.9%, 59.9%, 0%, 38.4%)
CIE-LAB	lab(31.16, 26.95, -52.63)
CIE-LCH	lch(31.16, 59.13, 297.12°)
OKLab	oklab(41.72% 0.0076 -0.1515)
OKLCH	oklch(41.72% 0.152 272.9)
XYZ	xyz(9.2775, 6.7186, 32.6997)
Luminance	0.0672 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343F9D #9D9234

analogous

#34739D #343F9D #5D349D

triadic

#343F9D #9D343F #3F9D34

tetradic

#343F9D #9D3473 #9D9234 #349D5D

square

#343F9D #9D3473 #9D9234 #349D5D

split-complementary

#343F9D #9D5D34 #739D34

monochromatic

#161A41 #252D6F #343F9D #4B57C3 #7982D3

Accessibility & contrast

On white

8.96

#343F9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#343F9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343F9D

8.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343F9D	#FFFFFF	#000000	##FFFFFF
##343F9D	1.00	8.96	2.34	8.96
#FFFFFF	8.96	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA0

Deuteranopia (green-blind)

#00459B

Tritanopia (blue-blind)

#005667

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #343f9d;
/* rgb */ color: rgb(52, 63, 157);
/* oklch */ color: oklch(41.7% 0.152 272.9);

Tailwind

colors: {
  custom: {
    50: '#7874bb',
    500: '#343f9d',
    950: '#000000',
  },
}

SCSS

$custom: #343f9d;
$custom-light: #7874bb;
$custom-dark: #000000;

JSON

{
  "hex": "#343f9d",
  "rgb": {
    "r": 52,
    "g": 63,
    "b": 157
  },
  "hsl": {
    "h": 233.714,
    "s": 50.239,
    "l": 40.98
  },
  "oklch": {
    "l": 0.41715,
    "c": 0.15174,
    "h": 272.9
  },
  "luminance": 0.06719
}

Semantic roles & 50–950 ramp

primary

#343F9D

secondary

#BBB372

accent

#CB4EDA

background

#F7F7FB

surface

#EEEDF6

border

#C9C8D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #343F9D

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

Preview Lab → · Contrast checker → · Palette generator →