#343E99#343E99

#343E99 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.2% C 0.147 H 273.3°. Best body text is #FFFFFF at 9.15:1 contrast (WCAG AA passes).

Color values

HEX	#343E99
RGB	rgb(52, 62, 153)
HSL	hsl(234, 49%, 40%)
HSV	hsv(234, 66%, 60%)
CMYK	cmyk(66%, 59.5%, 0%, 40%)
CIE-LAB	lab(30.58, 26.16, -51.14)
CIE-LCH	lch(30.58, 57.44, 297.10°)
OKLab	oklab(41.19% 0.0085 -0.1472)
OKLCH	oklch(41.19% 0.147 273.3)
XYZ	xyz(8.8867, 6.4744, 30.9122)
Luminance	0.0648 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343E99 #998F34

analogous

#347199 #343E99 #5C3499

triadic

#343E99 #99343E #3E9934

tetradic

#343E99 #993471 #998F34 #34995C

square

#343E99 #993471 #998F34 #34995C

split-complementary

#343E99 #995C34 #719934

monochromatic

#15193E #242B6B #343E99 #4955C1 #7780D1

Accessibility & contrast

On white

9.15

#343E99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#343E99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343E99

9.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343E99	#FFFFFF	#000000	##FFFFFF
##343E99	1.00	9.15	2.30	9.15
#FFFFFF	9.15	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004D9C

Deuteranopia (green-blind)

#004497

Tritanopia (blue-blind)

#005465

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #343e99;
/* rgb */ color: rgb(52, 62, 153);
/* oklch */ color: oklch(41.2% 0.147 273.3);

Tailwind

colors: {
  custom: {
    50: '#7773b8',
    500: '#343e99',
    950: '#000000',
  },
}

SCSS

$custom: #343e99;
$custom-light: #7773b8;
$custom-dark: #000000;

JSON

{
  "hex": "#343e99",
  "rgb": {
    "r": 52,
    "g": 62,
    "b": 153
  },
  "hsl": {
    "h": 234.059,
    "s": 49.268,
    "l": 40.196
  },
  "oklch": {
    "l": 0.41185,
    "c": 0.14742,
    "h": 273.3
  },
  "luminance": 0.06475
}

Semantic roles & 50–950 ramp

primary

#343E99

secondary

#B9B270

accent

#CB4FD9

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0811

muted

#7C7B80

Preview Lab

Preview with #343E99

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

Preview Lab → · Contrast checker → · Palette generator →