#3363B3#3363B3

#3363B3 is a mid, vivid blue. Relative luminance 0.129; OKLCH L 50.9% C 0.137 H 260.0°. Best body text is #FFFFFF at 5.87:1 contrast (WCAG AA passes).

Color values

HEX	#3363B3
RGB	rgb(51, 99, 179)
HSL	hsl(218, 56%, 45%)
HSV	hsv(218, 72%, 70%)
CMYK	cmyk(71.5%, 44.7%, 0%, 29.8%)
CIE-LAB	lab(42.58, 11.30, -47.29)
CIE-LCH	lch(42.58, 48.62, 283.44°)
OKLab	oklab(50.85% -0.0238 -0.1353)
OKLCH	oklch(50.85% 0.137 260)
XYZ	xyz(13.9608, 12.8807, 44.3895)
Luminance	0.1288 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3363B3 #B38333

analogous

#33A3B3 #3363B3 #4333B3

triadic

#3363B3 #B33363 #63B333

tetradic

#3363B3 #B333A3 #B38333 #33B343

square

#3363B3 #B333A3 #B38333 #33B343

split-complementary

#3363B3 #B34333 #A3B333

monochromatic

#182E54 #254983 #3363B3 #5582CE #84A5DC

Accessibility & contrast

On white

5.87

#3363B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.58

#3363B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3363B3

5.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3363B3	#FFFFFF	#000000	##FFFFFF
##3363B3	1.00	5.87	3.58	5.87
#FFFFFF	5.87	1.00	21.00	1.00
#000000	3.58	21.00	1.00	21.00
##FFFFFF	5.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B6BB6

Deuteranopia (green-blind)

#235FB1

Tritanopia (blue-blind)

#007682

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3363b3;
/* rgb */ color: rgb(51, 99, 179);
/* oklch */ color: oklch(50.9% 0.137 260.0);

Tailwind

colors: {
  custom: {
    50: '#7a8eca',
    500: '#3363b3',
    950: '#000000',
  },
}

SCSS

$custom: #3363b3;
$custom-light: #7a8eca;
$custom-dark: #000000;

JSON

{
  "hex": "#3363b3",
  "rgb": {
    "r": 51,
    "g": 99,
    "b": 179
  },
  "hsl": {
    "h": 217.5,
    "s": 55.652,
    "l": 45.098
  },
  "oklch": {
    "l": 0.50854,
    "c": 0.13742,
    "h": 260
  },
  "luminance": 0.12882
}

Semantic roles & 50–950 ramp

primary

#3363B3

secondary

#C6AA7C

accent

#A749DF

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #3363B3

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

Preview Lab → · Contrast checker → · Palette generator →