#343A88#343A88

#343A88 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.0% C 0.128 H 275.4°. Best body text is #FFFFFF at 9.97:1 contrast (WCAG AA passes).

Color values

HEX	#343A88
RGB	rgb(52, 58, 136)
HSL	hsl(236, 45%, 37%)
HSV	hsv(236, 62%, 53%)
CMYK	cmyk(61.8%, 57.4%, 0%, 46.7%)
CIE-LAB	lab(28.20, 22.70, -44.55)
CIE-LCH	lch(28.20, 50.00, 297.00°)
OKLab	oklab(39% 0.0121 -0.1278)
OKLCH	oklch(39% 0.128 275.4)
XYZ	xyz(7.3717, 5.5332, 23.9673)
Luminance	0.0553 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343A88 #888234

analogous

#346488 #343A88 #583488

triadic

#343A88 #88343A #3A8834

tetradic

#343A88 #883464 #888234 #348858

square

#343A88 #883464 #888234 #348858

split-complementary

#343A88 #885834 #648834

monochromatic

#12142F #23275C #343A88 #454DB4 #6F75C8

Accessibility & contrast

On white

9.97

#343A88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#343A88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343A88

9.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343A88	#FFFFFF	#000000	##FFFFFF
##343A88	1.00	9.97	2.11	9.97
#FFFFFF	9.97	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00468B

Deuteranopia (green-blind)

#003F86

Tritanopia (blue-blind)

#004C5B

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #343a88;
/* rgb */ color: rgb(52, 58, 136);
/* oklch */ color: oklch(39.0% 0.128 275.4);

Tailwind

colors: {
  custom: {
    50: '#7470ab',
    500: '#343a88',
    950: '#000000',
  },
}

SCSS

$custom: #343a88;
$custom-light: #7470ab;
$custom-dark: #000000;

JSON

{
  "hex": "#343a88",
  "rgb": {
    "r": 52,
    "g": 58,
    "b": 136
  },
  "hsl": {
    "h": 235.714,
    "s": 44.681,
    "l": 36.863
  },
  "oklch": {
    "l": 0.39,
    "c": 0.12841,
    "h": 275.4
  },
  "luminance": 0.05534
}

Semantic roles & 50–950 ramp

primary

#343A88

secondary

#B0AB68

accent

#CB53D4

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #343A88

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

Preview Lab → · Contrast checker → · Palette generator →