#3347B3#3347B3

#3347B3 is a mid, vivid blue. Relative luminance 0.085; OKLCH L 45.1% C 0.172 H 270.0°. Best body text is #FFFFFF at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#3347B3
RGB	rgb(51, 71, 179)
HSL	hsl(231, 56%, 45%)
HSV	hsv(231, 72%, 70%)
CMYK	cmyk(71.5%, 60.3%, 0%, 29.8%)
CIE-LAB	lab(34.93, 29.57, -59.66)
CIE-LCH	lch(34.93, 66.59, 296.36°)
OKLab	oklab(45.05% -0.0001 -0.1721)
OKLCH	oklch(45.05% 0.172 270)
XYZ	xyz(11.7524, 8.4638, 43.6534)
Luminance	0.0847 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3347B3 #B39F33

analogous

#3387B3 #3347B3 #5F33B3

triadic

#3347B3 #B33347 #47B333

tetradic

#3347B3 #B33387 #B39F33 #33B35F

square

#3347B3 #B33387 #B39F33 #33B35F

split-complementary

#3347B3 #B35F33 #87B333

monochromatic

#182154 #253483 #3347B3 #5568CE #8492DC

Accessibility & contrast

On white

7.80

#3347B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#3347B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3347B3

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3347B3	#FFFFFF	#000000	##FFFFFF
##3347B3	1.00	7.80	2.69	7.80
#FFFFFF	7.80	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058B7

Deuteranopia (green-blind)

#004CB1

Tritanopia (blue-blind)

#006276

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3347b3;
/* rgb */ color: rgb(51, 71, 179);
/* oklch */ color: oklch(45.1% 0.172 270.0);

Tailwind

colors: {
  custom: {
    50: '#7c7acb',
    500: '#3347b3',
    950: '#000000',
  },
}

SCSS

$custom: #3347b3;
$custom-light: #7c7acb;
$custom-dark: #000000;

JSON

{
  "hex": "#3347b3",
  "rgb": {
    "r": 51,
    "g": 71,
    "b": 179
  },
  "hsl": {
    "h": 230.625,
    "s": 55.652,
    "l": 45.098
  },
  "oklch": {
    "l": 0.45054,
    "c": 0.17215,
    "h": 270
  },
  "luminance": 0.08465
}

Semantic roles & 50–950 ramp

primary

#3347B3

secondary

#C6BA7C

accent

#C849DF

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3347B3

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

Preview Lab → · Contrast checker → · Palette generator →