#3347B1#3347B1

#3347B1 is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.9% C 0.169 H 270.0°. Best body text is #FFFFFF at 7.84:1 contrast (WCAG AA passes).

Color values

HEX	#3347B1
RGB	rgb(51, 71, 177)
HSL	hsl(230, 55%, 45%)
HSV	hsv(230, 71%, 69%)
CMYK	cmyk(71.2%, 59.9%, 0%, 30.6%)
CIE-LAB	lab(34.77, 28.84, -58.74)
CIE-LCH	lch(34.77, 65.44, 296.15°)
OKLab	oklab(44.88% -0.0001 -0.1694)
OKLCH	oklch(44.88% 0.169 270)
XYZ	xyz(11.5516, 8.3834, 42.5958)
Luminance	0.0838 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3347B1 #B19D33

analogous

#3386B1 #3347B1 #5E33B1

triadic

#3347B1 #B13347 #47B133

tetradic

#3347B1 #B13386 #B19D33 #33B15E

square

#3347B1 #B13386 #B19D33 #33B15E

split-complementary

#3347B1 #B15E33 #86B133

monochromatic

#182152 #253481 #3347B1 #5467CE #8391DB

Accessibility & contrast

On white

7.84

#3347B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#3347B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3347B1

7.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3347B1	#FFFFFF	#000000	##FFFFFF
##3347B1	1.00	7.84	2.68	7.84
#FFFFFF	7.84	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058B5

Deuteranopia (green-blind)

#004CAF

Tritanopia (blue-blind)

#006275

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3347b1;
/* rgb */ color: rgb(51, 71, 177);
/* oklch */ color: oklch(44.9% 0.169 270.0);

Tailwind

colors: {
  custom: {
    50: '#7c7ac9',
    500: '#3347b1',
    950: '#000000',
  },
}

SCSS

$custom: #3347b1;
$custom-light: #7c7ac9;
$custom-dark: #000000;

JSON

{
  "hex": "#3347b1",
  "rgb": {
    "r": 51,
    "g": 71,
    "b": 177
  },
  "hsl": {
    "h": 230.476,
    "s": 55.263,
    "l": 44.706
  },
  "oklch": {
    "l": 0.44884,
    "c": 0.16944,
    "h": 270
  },
  "luminance": 0.08385
}

Semantic roles & 50–950 ramp

primary

#3347B1

secondary

#C5B97B

accent

#C749DF

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3347B1

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

Preview Lab → · Contrast checker → · Palette generator →