#3366C0#3366C0

#3366C0 is a mid, vivid blue. Relative luminance 0.140; OKLCH L 52.4% C 0.152 H 260.8°. Best body text is #FFFFFF at 5.52:1 contrast (WCAG AA passes).

Color values

HEX	#3366C0
RGB	rgb(51, 102, 192)
HSL	hsl(218, 58%, 48%)
HSV	hsv(218, 73%, 75%)
CMYK	cmyk(73.4%, 46.9%, 0%, 24.7%)
CIE-LAB	lab(44.25, 14.23, -52.19)
CIE-LCH	lch(44.25, 54.10, 285.25°)
OKLab	oklab(52.4% -0.0242 -0.1497)
OKLCH	oklch(52.4% 0.152 260.8)
XYZ	xyz(15.6276, 14.0106, 51.7397)
Luminance	0.1401 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3366C0 #C08D33

analogous

#33ACC0 #3366C0 #4633C0

triadic

#3366C0 #C03366 #66C033

tetradic

#3366C0 #C033AC #C08D33 #33C046

square

#3366C0 #C033AC #C08D33 #33C046

split-complementary

#3366C0 #C04633 #ACC033

monochromatic

#19335F #264C90 #3366C0 #5C88D4 #8DABE1

Accessibility & contrast

On white

5.52

#3366C0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.80

#3366C0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3366C0

5.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3366C0	#FFFFFF	#000000	##FFFFFF
##3366C0	1.00	5.52	3.80	5.52
#FFFFFF	5.52	1.00	21.00	1.00
#000000	3.80	21.00	1.00	21.00
##FFFFFF	5.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3670C3

Deuteranopia (green-blind)

#1363BE

Tritanopia (blue-blind)

#007B8A

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3366c0;
/* rgb */ color: rgb(51, 102, 192);
/* oklch */ color: oklch(52.4% 0.152 260.8);

Tailwind

colors: {
  custom: {
    50: '#7d91d3',
    500: '#3366c0',
    950: '#000000',
  },
}

SCSS

$custom: #3366c0;
$custom-light: #7d91d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3366c0",
  "rgb": {
    "r": 51,
    "g": 102,
    "b": 192
  },
  "hsl": {
    "h": 218.298,
    "s": 58.025,
    "l": 47.647
  },
  "oklch": {
    "l": 0.52397,
    "c": 0.15164,
    "h": 260.8
  },
  "luminance": 0.14012
}

Semantic roles & 50–950 ramp

primary

#3366C0

secondary

#CBB184

accent

#A947E1

background

#F8F8FD

surface

#EFF0FA

border

#CACBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3366C0

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

Preview Lab → · Contrast checker → · Palette generator →