#3366C9#3366C9

#3366C9 is a mid, vivid blue. Relative luminance 0.144; OKLCH L 53.0% C 0.164 H 262.0°. Best body text is #FFFFFF at 5.41:1 contrast (WCAG AA passes).

Color values

HEX	#3366C9
RGB	rgb(51, 102, 201)
HSL	hsl(220, 60%, 49%)
HSV	hsv(220, 75%, 79%)
CMYK	cmyk(74.6%, 49.3%, 0%, 21.2%)
CIE-LAB	lab(44.83, 17.59, -56.45)
CIE-LCH	lch(44.83, 59.13, 287.31°)
OKLab	oklab(53.03% -0.0229 -0.1622)
OKLCH	oklch(53.03% 0.164 262)
XYZ	xyz(16.6554, 14.4217, 57.1529)
Luminance	0.1442 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3366C9 #C99633

analogous

#33B1C9 #3366C9 #4B33C9

triadic

#3366C9 #C93366 #66C933

tetradic

#3366C9 #C933B1 #C99633 #33C94B

square

#3366C9 #C933B1 #C99633 #33C94B

split-complementary

#3366C9 #C94B33 #B1C933

monochromatic

#1A3467 #274D98 #3366C9 #628AD7 #93AEE4

Accessibility & contrast

On white

5.41

#3366C9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.88

#3366C9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3366C9

5.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3366C9	#FFFFFF	#000000	##FFFFFF
##3366C9	1.00	5.41	3.88	5.41
#FFFFFF	5.41	1.00	21.00	1.00
#000000	3.88	21.00	1.00	21.00
##FFFFFF	5.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C71CD

Deuteranopia (green-blind)

#0064C7

Tritanopia (blue-blind)

#007E8E

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3366c9;
/* rgb */ color: rgb(51, 102, 201);
/* oklch */ color: oklch(53.0% 0.164 262.0);

Tailwind

colors: {
  custom: {
    50: '#7f91da',
    500: '#3366c9',
    950: '#000000',
  },
}

SCSS

$custom: #3366c9;
$custom-light: #7f91da;
$custom-dark: #000000;

JSON

{
  "hex": "#3366c9",
  "rgb": {
    "r": 51,
    "g": 102,
    "b": 201
  },
  "hsl": {
    "h": 219.6,
    "s": 59.524,
    "l": 49.412
  },
  "oklch": {
    "l": 0.53032,
    "c": 0.16383,
    "h": 262
  },
  "luminance": 0.14424
}

Semantic roles & 50–950 ramp

primary

#3366C9

secondary

#CFB789

accent

#AD45E3

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0B0C15

muted

#7C7D83

Preview Lab

Preview with #3366C9

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

Preview Lab → · Contrast checker → · Palette generator →