#343FC7#343FC7

#343FC7 is a mid, highly saturated blue. Relative luminance 0.084; OKLCH L 45.5% C 0.207 H 271.4°. Best body text is #FFFFFF at 7.83:1 contrast (WCAG AA passes).

Color values

HEX	#343FC7
RGB	rgb(52, 63, 199)
HSL	hsl(236, 59%, 49%)
HSV	hsv(236, 74%, 78%)
CMYK	cmyk(73.9%, 68.3%, 0%, 22%)
CIE-LAB	lab(34.82, 41.83, -71.60)
CIE-LCH	lch(34.82, 82.93, 300.29°)
OKLab	oklab(45.52% 0.005 -0.2071)
OKLCH	oklch(45.52% 0.207 271.4)
XYZ	xyz(13.4990, 8.4072, 54.9331)
Luminance	0.0841 (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

#343FC7 #C7BC34

analogous

#3489C7 #343FC7 #7334C7

triadic

#343FC7 #C7343F #3FC734

tetradic

#343FC7 #C73489 #C7BC34 #34C773

square

#343FC7 #C73489 #C7BC34 #34C773

split-complementary

#343FC7 #C77334 #89C734

monochromatic

#1B2066 #273096 #343FC7 #626BD6 #9399E3

Accessibility & contrast

On white

7.83

#343FC7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#343FC7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343FC7

7.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343FC7	#FFFFFF	#000000	##FFFFFF
##343FC7	1.00	7.83	2.68	7.83
#FFFFFF	7.83	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059CB

Deuteranopia (green-blind)

#004BC4

Tritanopia (blue-blind)

#00647E

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #343fc7;
/* rgb */ color: rgb(52, 63, 199);
/* oklch */ color: oklch(45.5% 0.207 271.4);

Tailwind

colors: {
  custom: {
    50: '#8274d9',
    500: '#343fc7',
    950: '#000000',
  },
}

SCSS

$custom: #343fc7;
$custom-light: #8274d9;
$custom-dark: #000000;

JSON

{
  "hex": "#343fc7",
  "rgb": {
    "r": 52,
    "g": 63,
    "b": 199
  },
  "hsl": {
    "h": 235.51,
    "s": 58.566,
    "l": 49.216
  },
  "oklch": {
    "l": 0.45522,
    "c": 0.20721,
    "h": 271.4
  },
  "luminance": 0.08409
}

Semantic roles & 50–950 ramp

primary

#343FC7

secondary

#CEC989

accent

#D646E2

background

#F8F7FD

surface

#F0EDFB

border

#CBC8D4

text

#0C0815

muted

#7D7B83

Preview Lab

Preview with #343FC7

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

Preview Lab → · Contrast checker → · Palette generator →