#343B88#343B88

#343B88 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.2% C 0.127 H 275.0°. Best body text is #FFFFFF at 9.87:1 contrast (WCAG AA passes).

Color values

HEX	#343B88
RGB	rgb(52, 59, 136)
HSL	hsl(235, 45%, 37%)
HSV	hsv(235, 62%, 53%)
CMYK	cmyk(61.8%, 56.6%, 0%, 46.7%)
CIE-LAB	lab(28.47, 22.03, -44.11)
CIE-LCH	lch(28.47, 49.30, 296.54°)
OKLab	oklab(39.2% 0.011 -0.1265)
OKLCH	oklch(39.2% 0.127 275)
XYZ	xyz(7.4226, 5.6350, 23.9843)
Luminance	0.0564 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343B88 #888134

analogous

#346588 #343B88 #573488

triadic

#343B88 #88343B #3B8834

tetradic

#343B88 #883465 #888134 #348857

square

#343B88 #883465 #888134 #348857

split-complementary

#343B88 #885734 #658834

monochromatic

#12152F #23285C #343B88 #454EB4 #6F76C8

Accessibility & contrast

On white

9.87

#343B88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#343B88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343B88

9.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343B88	#FFFFFF	#000000	##FFFFFF
##343B88	1.00	9.87	2.13	9.87
#FFFFFF	9.87	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#03478B

Deuteranopia (green-blind)

#004086

Tritanopia (blue-blind)

#004D5B

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #343b88;
/* rgb */ color: rgb(52, 59, 136);
/* oklch */ color: oklch(39.2% 0.127 275.0);

Tailwind

colors: {
  custom: {
    50: '#7470ab',
    500: '#343b88',
    950: '#000000',
  },
}

SCSS

$custom: #343b88;
$custom-light: #7470ab;
$custom-dark: #000000;

JSON

{
  "hex": "#343b88",
  "rgb": {
    "r": 52,
    "g": 59,
    "b": 136
  },
  "hsl": {
    "h": 235,
    "s": 44.681,
    "l": 36.863
  },
  "oklch": {
    "l": 0.39202,
    "c": 0.12702,
    "h": 275
  },
  "luminance": 0.05636
}

Semantic roles & 50–950 ramp

primary

#343B88

secondary

#B0AA68

accent

#CA53D4

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #343B88

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

Preview Lab → · Contrast checker → · Palette generator →