#343FAF#343FAF

#343FAF is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.3% C 0.176 H 272.3°. Best body text is #FFFFFF at 8.48:1 contrast (WCAG AA passes).

Color values

HEX	#343FAF
RGB	rgb(52, 63, 175)
HSL	hsl(235, 54%, 45%)
HSV	hsv(235, 70%, 69%)
CMYK	cmyk(70.3%, 64%, 0%, 31.4%)
CIE-LAB	lab(32.66, 33.42, -61.00)
CIE-LCH	lch(32.66, 69.55, 298.71°)
OKLab	oklab(43.29% 0.007 -0.1761)
OKLCH	oklch(43.29% 0.176 272.3)
XYZ	xyz(10.9289, 7.3792, 41.3975)
Luminance	0.0738 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.71

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343FAF #AFA434

analogous

#347DAF #343FAF #6734AF

triadic

#343FAF #AF343F #3FAF34

tetradic

#343FAF #AF347D #AFA434 #34AF67

square

#343FAF #AF347D #AFA434 #34AF67

split-complementary

#343FAF #AF6734 #7DAF34

monochromatic

#181D51 #262E80 #343FAF #545FCC #838BDA

Accessibility & contrast

On white

8.48

#343FAF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#343FAF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343FAF

8.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343FAF	#FFFFFF	#000000	##FFFFFF
##343FAF	1.00	8.48	2.48	8.48
#FFFFFF	8.48	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B3

Deuteranopia (green-blind)

#0047AD

Tritanopia (blue-blind)

#005C71

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #343faf;
/* rgb */ color: rgb(52, 63, 175);
/* oklch */ color: oklch(43.3% 0.176 272.3);

Tailwind

colors: {
  custom: {
    50: '#7c74c8',
    500: '#343faf',
    950: '#000000',
  },
}

SCSS

$custom: #343faf;
$custom-light: #7c74c8;
$custom-dark: #000000;

JSON

{
  "hex": "#343faf",
  "rgb": {
    "r": 52,
    "g": 63,
    "b": 175
  },
  "hsl": {
    "h": 234.634,
    "s": 54.185,
    "l": 44.51
  },
  "oklch": {
    "l": 0.43286,
    "c": 0.17627,
    "h": 272.3
  },
  "luminance": 0.0738
}

Semantic roles & 50–950 ramp

primary

#343FAF

secondary

#C4BD7B

accent

#D04ADE

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #343FAF

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

Preview Lab → · Contrast checker → · Palette generator →