#3366C1#3366C1

#3366C1 is a mid, vivid blue. Relative luminance 0.141; OKLCH L 52.5% C 0.153 H 260.9°. Best body text is #FFFFFF at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#3366C1
RGB	rgb(51, 102, 193)
HSL	hsl(218, 58%, 48%)
HSV	hsv(218, 74%, 76%)
CMYK	cmyk(73.6%, 47.2%, 0%, 24.3%)
CIE-LAB	lab(44.31, 14.60, -52.67)
CIE-LCH	lch(44.31, 54.66, 285.50°)
OKLab	oklab(52.47% -0.0241 -0.1511)
OKLCH	oklch(52.47% 0.153 260.9)
XYZ	xyz(15.7388, 14.0551, 52.3252)
Luminance	0.1406 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3366C1 #C18E33

analogous

#33ADC1 #3366C1 #4733C1

triadic

#3366C1 #C13366 #66C133

tetradic

#3366C1 #C133AD #C18E33 #33C147

square

#3366C1 #C133AD #C18E33 #33C147

split-complementary

#3366C1 #C14733 #ADC133

monochromatic

#193360 #264C91 #3366C1 #5D88D4 #8DABE1

Accessibility & contrast

On white

5.51

#3366C1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.81

#3366C1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3366C1

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3366C1	#FFFFFF	#000000	##FFFFFF
##3366C1	1.00	5.51	3.81	5.51
#FFFFFF	5.51	1.00	21.00	1.00
#000000	3.81	21.00	1.00	21.00
##FFFFFF	5.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3570C4

Deuteranopia (green-blind)

#0F63BF

Tritanopia (blue-blind)

#007B8A

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3366c1;
/* rgb */ color: rgb(51, 102, 193);
/* oklch */ color: oklch(52.5% 0.153 260.9);

Tailwind

colors: {
  custom: {
    50: '#7d91d4',
    500: '#3366c1',
    950: '#000000',
  },
}

SCSS

$custom: #3366c1;
$custom-light: #7d91d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3366c1",
  "rgb": {
    "r": 51,
    "g": 102,
    "b": 193
  },
  "hsl": {
    "h": 218.451,
    "s": 58.197,
    "l": 47.843
  },
  "oklch": {
    "l": 0.52467,
    "c": 0.15301,
    "h": 260.9
  },
  "luminance": 0.14057
}

Semantic roles & 50–950 ramp

primary

#3366C1

secondary

#CBB284

accent

#AA46E1

background

#F8F8FD

surface

#EFF0FA

border

#CACBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3366C1

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

Preview Lab → · Contrast checker → · Palette generator →