#3347B9#3347B9

#3347B9 is a mid, vivid blue. Relative luminance 0.087; OKLCH L 45.6% C 0.180 H 270.0°. Best body text is #FFFFFF at 7.66:1 contrast (WCAG AA passes).

Color values

HEX	#3347B9
RGB	rgb(51, 71, 185)
HSL	hsl(231, 57%, 46%)
HSV	hsv(231, 72%, 73%)
CMYK	cmyk(72.4%, 61.6%, 0%, 27.5%)
CIE-LAB	lab(35.42, 31.75, -62.40)
CIE-LCH	lch(35.42, 70.01, 296.97°)
OKLab	oklab(45.57% -0.0001 -0.1802)
OKLCH	oklch(45.57% 0.18 270)
XYZ	xyz(12.3724, 8.7118, 46.9190)
Luminance	0.0871 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3347B9 #B9A533

analogous

#338AB9 #3347B9 #6233B9

triadic

#3347B9 #B93347 #47B933

tetradic

#3347B9 #B9338A #B9A533 #33B962

square

#3347B9 #B9338A #B9A533 #33B962

split-complementary

#3347B9 #B96233 #8AB933

monochromatic

#192259 #263589 #3347B9 #586AD1 #8895DE

Accessibility & contrast

On white

7.66

#3347B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.74

#3347B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3347B9

7.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3347B9	#FFFFFF	#000000	##FFFFFF
##3347B9	1.00	7.66	2.74	7.66
#FFFFFF	7.66	1.00	21.00	1.00
#000000	2.74	21.00	1.00	21.00
##FFFFFF	7.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ABD

Deuteranopia (green-blind)

#004DB7

Tritanopia (blue-blind)

#006479

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #3347b9;
/* rgb */ color: rgb(51, 71, 185);
/* oklch */ color: oklch(45.6% 0.180 270.0);

Tailwind

colors: {
  custom: {
    50: '#7d7acf',
    500: '#3347b9',
    950: '#000000',
  },
}

SCSS

$custom: #3347b9;
$custom-light: #7d7acf;
$custom-dark: #000000;

JSON

{
  "hex": "#3347b9",
  "rgb": {
    "r": 51,
    "g": 71,
    "b": 185
  },
  "hsl": {
    "h": 231.045,
    "s": 56.78,
    "l": 46.275
  },
  "oklch": {
    "l": 0.45573,
    "c": 0.18019,
    "h": 270
  },
  "luminance": 0.08713
}

Semantic roles & 50–950 ramp

primary

#3347B9

secondary

#C8BD80

accent

#C948E0

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #3347B9

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

Preview Lab → · Contrast checker → · Palette generator →