#343BA5#343BA5

#343BA5 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.7% C 0.168 H 273.6°. Best body text is #FFFFFF at 9.07:1 contrast (WCAG AA passes).

Color values

HEX	#343BA5
RGB	rgb(52, 59, 165)
HSL	hsl(236, 52%, 43%)
HSV	hsv(236, 68%, 65%)
CMYK	cmyk(68.5%, 64.2%, 0%, 35.3%)
CIE-LAB	lab(30.82, 32.42, -58.02)
CIE-LCH	lch(30.82, 66.46, 299.20°)
OKLab	oklab(41.67% 0.0106 -0.1674)
OKLCH	oklch(41.67% 0.168 273.6)
XYZ	xyz(9.7694, 6.5737, 36.3440)
Luminance	0.0658 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343BA5 #A59E34

analogous

#3474A5 #343BA5 #6534A5

triadic

#343BA5 #A5343B #3BA534

tetradic

#343BA5 #A53474 #A59E34 #34A565

square

#343BA5 #A53474 #A59E34 #34A565

split-complementary

#343BA5 #A56534 #74A534

monochromatic

#171A48 #252A76 #343BA5 #4F56C7 #7D83D6

Accessibility & contrast

On white

9.07

#343BA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#343BA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343BA5

9.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343BA5	#FFFFFF	#000000	##FFFFFF
##343BA5	1.00	9.07	2.32	9.07
#FFFFFF	9.07	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA8

Deuteranopia (green-blind)

#0043A3

Tritanopia (blue-blind)

#00566A

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #343ba5;
/* rgb */ color: rgb(52, 59, 165);
/* oklch */ color: oklch(41.7% 0.168 273.6);

Tailwind

colors: {
  custom: {
    50: '#7a71c1',
    500: '#343ba5',
    950: '#000000',
  },
}

SCSS

$custom: #343ba5;
$custom-light: #7a71c1;
$custom-dark: #000000;

JSON

{
  "hex": "#343ba5",
  "rgb": {
    "r": 52,
    "g": 59,
    "b": 165
  },
  "hsl": {
    "h": 236.283,
    "s": 52.074,
    "l": 42.549
  },
  "oklch": {
    "l": 0.4167,
    "c": 0.16775,
    "h": 273.6
  },
  "luminance": 0.06575
}

Semantic roles & 50–950 ramp

primary

#343BA5

secondary

#BFBB76

accent

#D34CDC

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #343BA5

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

Preview Lab → · Contrast checker → · Palette generator →