#343DB9#343DB9

#343DB9 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.9% C 0.192 H 272.3°. Best body text is #FFFFFF at 8.35:1 contrast (WCAG AA passes).

Color values

HEX	#343DB9
RGB	rgb(52, 61, 185)
HSL	hsl(236, 56%, 46%)
HSV	hsv(236, 72%, 73%)
CMYK	cmyk(71.9%, 67%, 0%, 27.5%)
CIE-LAB	lab(33.07, 38.20, -66.26)
CIE-LCH	lch(33.07, 76.48, 299.97°)
OKLab	oklab(43.86% 0.0076 -0.1915)
OKLCH	oklch(43.86% 0.192 272.3)
XYZ	xyz(11.8389, 7.5691, 46.7266)
Luminance	0.0757 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343DB9 #B9B034

analogous

#3480B9 #343DB9 #6E34B9

triadic

#343DB9 #B9343D #3DB934

tetradic

#343DB9 #B93480 #B9B034 #34B96E

square

#343DB9 #B93480 #B9B034 #34B96E

split-complementary

#343DB9 #B96E34 #80B934

monochromatic

#191D59 #272D89 #343DB9 #5A62D1 #898FDE

Accessibility & contrast

On white

8.35

#343DB9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#343DB9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343DB9

8.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343DB9	#FFFFFF	#000000	##FFFFFF
##343DB9	1.00	8.35	2.51	8.35
#FFFFFF	8.35	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BD

Deuteranopia (green-blind)

#0048B7

Tritanopia (blue-blind)

#005E76

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #343db9;
/* rgb */ color: rgb(52, 61, 185);
/* oklch */ color: oklch(43.9% 0.192 272.3);

Tailwind

colors: {
  custom: {
    50: '#7f73cf',
    500: '#343db9',
    950: '#000000',
  },
}

SCSS

$custom: #343db9;
$custom-light: #7f73cf;
$custom-dark: #000000;

JSON

{
  "hex": "#343db9",
  "rgb": {
    "r": 52,
    "g": 61,
    "b": 185
  },
  "hsl": {
    "h": 235.94,
    "s": 56.118,
    "l": 46.471
  },
  "oklch": {
    "l": 0.43861,
    "c": 0.19168,
    "h": 272.3
  },
  "luminance": 0.0757
}

Semantic roles & 50–950 ramp

primary

#343DB9

secondary

#C8C381

accent

#D548DF

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #343DB9

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

Preview Lab → · Contrast checker → · Palette generator →