#3365B3#3365B3

#3365B3 is a mid, vivid blue. Relative luminance 0.133; OKLCH L 51.3% C 0.135 H 259.0°. Best body text is #FFFFFF at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#3365B3
RGB	rgb(51, 101, 179)
HSL	hsl(217, 56%, 45%)
HSV	hsv(217, 72%, 70%)
CMYK	cmyk(71.5%, 43.6%, 0%, 29.8%)
CIE-LAB	lab(43.16, 10.02, -46.37)
CIE-LCH	lch(43.16, 47.44, 282.19°)
OKLab	oklab(51.3% -0.0257 -0.1326)
OKLCH	oklch(51.3% 0.135 259)
XYZ	xyz(14.1527, 13.2643, 44.4535)
Luminance	0.1327 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3365B3 #B38133

analogous

#33A5B3 #3365B3 #4133B3

triadic

#3365B3 #B33365 #65B333

tetradic

#3365B3 #B333A5 #B38133 #33B341

square

#3365B3 #B333A5 #B38133 #33B341

split-complementary

#3365B3 #B34133 #A5B333

monochromatic

#182F54 #254A83 #3365B3 #5584CE #84A7DC

Accessibility & contrast

On white

5.75

#3365B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.65

#3365B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3365B3

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3365B3	#FFFFFF	#000000	##FFFFFF
##3365B3	1.00	5.75	3.65	5.75
#FFFFFF	5.75	1.00	21.00	1.00
#000000	3.65	21.00	1.00	21.00
##FFFFFF	5.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F6CB6

Deuteranopia (green-blind)

#2860B1

Tritanopia (blue-blind)

#007783

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3365b3;
/* rgb */ color: rgb(51, 101, 179);
/* oklch */ color: oklch(51.3% 0.135 259.0);

Tailwind

colors: {
  custom: {
    50: '#7a90ca',
    500: '#3365b3',
    950: '#000000',
  },
}

SCSS

$custom: #3365b3;
$custom-light: #7a90ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3365b3",
  "rgb": {
    "r": 51,
    "g": 101,
    "b": 179
  },
  "hsl": {
    "h": 216.563,
    "s": 55.652,
    "l": 45.098
  },
  "oklch": {
    "l": 0.51299,
    "c": 0.13505,
    "h": 259
  },
  "luminance": 0.13266
}

Semantic roles & 50–950 ramp

primary

#3365B3

secondary

#C6A97C

accent

#A449DF

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #3365B3

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

Preview Lab → · Contrast checker → · Palette generator →