#3366C5#3366C5

#3366C5 is a mid, vivid blue. Relative luminance 0.142; OKLCH L 52.7% C 0.158 H 261.5°. Best body text is #FFFFFF at 5.46:1 contrast (WCAG AA passes).

Color values

HEX	#3366C5
RGB	rgb(51, 102, 197)
HSL	hsl(219, 59%, 49%)
HSV	hsv(219, 74%, 77%)
CMYK	cmyk(74.1%, 48.2%, 0%, 22.7%)
CIE-LAB	lab(44.57, 16.10, -54.57)
CIE-LCH	lch(44.57, 56.89, 286.43°)
OKLab	oklab(52.75% -0.0235 -0.1567)
OKLCH	oklch(52.75% 0.158 261.5)
XYZ	xyz(16.1910, 14.2360, 54.7070)
Luminance	0.1424 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3366C5 #C59233

analogous

#33AFC5 #3366C5 #4933C5

triadic

#3366C5 #C53366 #66C533

tetradic

#3366C5 #C533AF #C59233 #33C549

square

#3366C5 #C533AF #C59233 #33C549

split-complementary

#3366C5 #C54933 #AFC533

monochromatic

#1A3464 #264D94 #3366C5 #5F89D6 #90ADE2

Accessibility & contrast

On white

5.46

#3366C5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.85

#3366C5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3366C5

5.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3366C5	#FFFFFF	#000000	##FFFFFF
##3366C5	1.00	5.46	3.85	5.46
#FFFFFF	5.46	1.00	21.00	1.00
#000000	3.85	21.00	1.00	21.00
##FFFFFF	5.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3171C9

Deuteranopia (green-blind)

#0063C3

Tritanopia (blue-blind)

#007D8C

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3366c5;
/* rgb */ color: rgb(51, 102, 197);
/* oklch */ color: oklch(52.7% 0.158 261.5);

Tailwind

colors: {
  custom: {
    50: '#7e91d7',
    500: '#3366c5',
    950: '#000000',
  },
}

SCSS

$custom: #3366c5;
$custom-light: #7e91d7;
$custom-dark: #000000;

JSON

{
  "hex": "#3366c5",
  "rgb": {
    "r": 51,
    "g": 102,
    "b": 197
  },
  "hsl": {
    "h": 219.041,
    "s": 58.871,
    "l": 48.627
  },
  "oklch": {
    "l": 0.52747,
    "c": 0.15843,
    "h": 261.5
  },
  "luminance": 0.14238
}

Semantic roles & 50–950 ramp

primary

#3366C5

secondary

#CDB487

accent

#AB46E2

background

#F8F8FD

surface

#EFF0FA

border

#CACBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3366C5

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

Preview Lab → · Contrast checker → · Palette generator →