#343C87#343C87

#343C87 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.3% C 0.124 H 274.6°. Best body text is #FFFFFF at 9.80:1 contrast (WCAG AA passes).

Color values

HEX	#343C87
RGB	rgb(52, 60, 135)
HSL	hsl(234, 44%, 37%)
HSV	hsv(234, 61%, 53%)
CMYK	cmyk(61.5%, 55.6%, 0%, 47.1%)
CIE-LAB	lab(28.67, 21.00, -43.17)
CIE-LCH	lch(28.67, 48.00, 295.94°)
OKLab	oklab(39.33% 0.0099 -0.1238)
OKLCH	oklch(39.33% 0.124 274.6)
XYZ	xyz(7.4038, 5.7105, 23.6291)
Luminance	0.0571 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343C87 #877F34

analogous

#346687 #343C87 #563487

triadic

#343C87 #87343C #3C8734

tetradic

#343C87 #873466 #877F34 #348756

square

#343C87 #873466 #877F34 #348756

split-complementary

#343C87 #875634 #668734

monochromatic

#12152F #23285B #343C87 #4550B3 #6E77C7

Accessibility & contrast

On white

9.80

#343C87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#343C87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343C87

9.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343C87	#FFFFFF	#000000	##FFFFFF
##343C87	1.00	9.80	2.14	9.80
#FFFFFF	9.80	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A478A

Deuteranopia (green-blind)

#004085

Tritanopia (blue-blind)

#004D5B

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #343c87;
/* rgb */ color: rgb(52, 60, 135);
/* oklch */ color: oklch(39.3% 0.124 274.6);

Tailwind

colors: {
  custom: {
    50: '#7471aa',
    500: '#343c87',
    950: '#000000',
  },
}

SCSS

$custom: #343c87;
$custom-light: #7471aa;
$custom-dark: #000000;

JSON

{
  "hex": "#343c87",
  "rgb": {
    "r": 52,
    "g": 60,
    "b": 135
  },
  "hsl": {
    "h": 234.217,
    "s": 44.385,
    "l": 36.667
  },
  "oklch": {
    "l": 0.39326,
    "c": 0.12417,
    "h": 274.6
  },
  "luminance": 0.05711
}

Semantic roles & 50–950 ramp

primary

#343C87

secondary

#AFA867

accent

#C854D4

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #343C87

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

Preview Lab → · Contrast checker → · Palette generator →