#3373D3#3373D3

#3373D3 is a mid, vivid blue. Relative luminance 0.177; OKLCH L 56.5% C 0.162 H 258.6°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#3373D3
RGB	rgb(51, 115, 211)
HSL	hsl(216, 65%, 51%)
HSV	hsv(216, 76%, 83%)
CMYK	cmyk(75.8%, 45.5%, 0%, 17.3%)
CIE-LAB	lab(49.09, 13.07, -55.32)
CIE-LCH	lch(49.09, 56.85, 283.30°)
OKLab	oklab(56.51% -0.032 -0.1587)
OKLCH	oklch(56.51% 0.162 258.6)
XYZ	xyz(19.2496, 17.6662, 64.0108)
Luminance	0.1767 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3373D3 #D39333

analogous

#33C3D3 #3373D3 #4333D3

triadic

#3373D3 #D33373 #73D333

tetradic

#3373D3 #D333C3 #D39333 #33D343

square

#3373D3 #D333C3 #D39333 #33D343

split-complementary

#3373D3 #D34333 #C3D333

monochromatic

#193D73 #2457A5 #3373D3 #6596DE #98B8E9

Accessibility & contrast

On white

4.63

#3373D3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#3373D3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3373D3

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3373D3	#FFFFFF	#000000	##FFFFFF
##3373D3	1.00	4.63	4.53	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#407CD7

Deuteranopia (green-blind)

#1B6ED1

Tritanopia (blue-blind)

#008A99

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3373d3;
/* rgb */ color: rgb(51, 115, 211);
/* oklch */ color: oklch(56.5% 0.162 258.6);

Tailwind

colors: {
  custom: {
    50: '#819ae1',
    500: '#3373d3',
    950: '#000000',
  },
}

SCSS

$custom: #3373d3;
$custom-light: #819ae1;
$custom-dark: #000000;

JSON

{
  "hex": "#3373d3",
  "rgb": {
    "r": 51,
    "g": 115,
    "b": 211
  },
  "hsl": {
    "h": 216,
    "s": 64.516,
    "l": 51.373
  },
  "oklch": {
    "l": 0.56506,
    "c": 0.16185,
    "h": 258.6
  },
  "luminance": 0.17668
}

Semantic roles & 50–950 ramp

primary

#3373D3

secondary

#D4B88E

accent

#A540E8

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3373D3

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

Preview Lab → · Contrast checker → · Palette generator →