#343DA5#343DA5

#343DA5 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.0% C 0.165 H 273.1°. Best body text is #FFFFFF at 8.91:1 contrast (WCAG AA passes).

Color values

HEX	#343DA5
RGB	rgb(52, 61, 165)
HSL	hsl(235, 52%, 43%)
HSV	hsv(235, 68%, 65%)
CMYK	cmyk(68.5%, 63%, 0%, 35.3%)
CIE-LAB	lab(31.31, 31.13, -57.21)
CIE-LCH	lch(31.31, 65.14, 298.55°)
OKLab	oklab(42.03% 0.0091 -0.165)
OKLCH	oklch(42.03% 0.165 273.1)
XYZ	xyz(9.8742, 6.7833, 36.3789)
Luminance	0.0678 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343DA5 #A59C34

analogous

#3476A5 #343DA5 #6334A5

triadic

#343DA5 #A5343D #3DA534

tetradic

#343DA5 #A53476 #A59C34 #34A563

square

#343DA5 #A53476 #A59C34 #34A563

split-complementary

#343DA5 #A56334 #76A534

monochromatic

#171B48 #252C76 #343DA5 #4F58C7 #7D84D6

Accessibility & contrast

On white

8.91

#343DA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#343DA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343DA5

8.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343DA5	#FFFFFF	#000000	##FFFFFF
##343DA5	1.00	8.91	2.36	8.91
#FFFFFF	8.91	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA8

Deuteranopia (green-blind)

#0045A3

Tritanopia (blue-blind)

#00576B

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #343da5;
/* rgb */ color: rgb(52, 61, 165);
/* oklch */ color: oklch(42.0% 0.165 273.1);

Tailwind

colors: {
  custom: {
    50: '#7a72c1',
    500: '#343da5',
    950: '#000000',
  },
}

SCSS

$custom: #343da5;
$custom-light: #7a72c1;
$custom-dark: #000000;

JSON

{
  "hex": "#343da5",
  "rgb": {
    "r": 52,
    "g": 61,
    "b": 165
  },
  "hsl": {
    "h": 235.221,
    "s": 52.074,
    "l": 42.549
  },
  "oklch": {
    "l": 0.42032,
    "c": 0.16529,
    "h": 273.1
  },
  "luminance": 0.06784
}

Semantic roles & 50–950 ramp

primary

#343DA5

secondary

#BFB976

accent

#D04CDC

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #343DA5

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

Preview Lab → · Contrast checker → · Palette generator →