#3366BF#3366BF

#3366BF is a mid, vivid blue. Relative luminance 0.140; OKLCH L 52.3% C 0.150 H 260.7°. Best body text is #FFFFFF at 5.54:1 contrast (WCAG AA passes).

Color values

HEX	#3366BF
RGB	rgb(51, 102, 191)
HSL	hsl(218, 58%, 47%)
HSV	hsv(218, 73%, 75%)
CMYK	cmyk(73.3%, 46.6%, 0%, 25.1%)
CIE-LAB	lab(44.18, 13.86, -51.72)
CIE-LCH	lch(44.18, 53.54, 285.00°)
OKLab	oklab(52.33% -0.0244 -0.1483)
OKLCH	oklch(52.33% 0.15 260.7)
XYZ	xyz(15.5172, 13.9664, 51.1581)
Luminance	0.1397 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3366BF #BF8C33

analogous

#33ACBF #3366BF #4633BF

triadic

#3366BF #BF3366 #66BF33

tetradic

#3366BF #BF33AC #BF8C33 #33BF46

square

#3366BF #BF33AC #BF8C33 #33BF46

split-complementary

#3366BF #BF4633 #ACBF33

monochromatic

#19325E #264C8F #3366BF #5C87D3 #8CABE0

Accessibility & contrast

On white

5.54

#3366BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.79

#3366BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3366BF

5.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3366BF	#FFFFFF	#000000	##FFFFFF
##3366BF	1.00	5.54	3.79	5.54
#FFFFFF	5.54	1.00	21.00	1.00
#000000	3.79	21.00	1.00	21.00
##FFFFFF	5.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#376FC2

Deuteranopia (green-blind)

#1562BD

Tritanopia (blue-blind)

#007B89

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3366bf;
/* rgb */ color: rgb(51, 102, 191);
/* oklch */ color: oklch(52.3% 0.150 260.7);

Tailwind

colors: {
  custom: {
    50: '#7d91d3',
    500: '#3366bf',
    950: '#000000',
  },
}

SCSS

$custom: #3366bf;
$custom-light: #7d91d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3366bf",
  "rgb": {
    "r": 51,
    "g": 102,
    "b": 191
  },
  "hsl": {
    "h": 218.143,
    "s": 57.851,
    "l": 47.451
  },
  "oklch": {
    "l": 0.52328,
    "c": 0.15028,
    "h": 260.7
  },
  "luminance": 0.13968
}

Semantic roles & 50–950 ramp

primary

#3366BF

secondary

#CBB183

accent

#A947E1

background

#F8F8FD

surface

#EFF0FA

border

#CACBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3366BF

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

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