#3673DD#3673DD

#3673DD is a mid, vivid blue. Relative luminance 0.183; OKLCH L 57.3% C 0.174 H 260.6°. Best body text is #000000 at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#3673DD
RGB	rgb(54, 115, 221)
HSL	hsl(218, 71%, 54%)
HSV	hsv(218, 76%, 87%)
CMYK	cmyk(75.6%, 48%, 0%, 13.3%)
CIE-LAB	lab(49.81, 17.13, -59.82)
CIE-LCH	lch(49.81, 62.22, 285.98°)
OKLab	oklab(57.29% -0.0284 -0.1718)
OKLCH	oklch(57.29% 0.174 260.6)
XYZ	xyz(20.6985, 18.2638, 70.8270)
Luminance	0.1827 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3673DD #DDA036

analogous

#36C7DD #3673DD #4D36DD

triadic

#3673DD #DD3673 #73DD36

tetradic

#3673DD #DD36C7 #DDA036 #36DD4D

square

#3673DD #DD36C7 #DDA036 #36DD4D

split-complementary

#3673DD #DD4D36 #C7DD36

monochromatic

#163E83 #1F56B7 #3673DD #6A97E6 #9FBCEF

Accessibility & contrast

On white

4.51

#3673DD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.65

#3673DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3673DD

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3673DD	#FFFFFF	#000000	##000000
##3673DD	1.00	4.51	4.65	4.65
#FFFFFF	4.51	1.00	21.00	21.00
#000000	4.65	21.00	1.00	1.00
##000000	4.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#377FE1

Deuteranopia (green-blind)

#006FDB

Tritanopia (blue-blind)

#008C9D

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3673dd;
/* rgb */ color: rgb(54, 115, 221);
/* oklch */ color: oklch(57.3% 0.174 260.6);

Tailwind

colors: {
  custom: {
    50: '#849ae8',
    500: '#3673dd',
    950: '#000000',
  },
}

SCSS

$custom: #3673dd;
$custom-light: #849ae8;
$custom-dark: #000000;

JSON

{
  "hex": "#3673dd",
  "rgb": {
    "r": 54,
    "g": 115,
    "b": 221
  },
  "hsl": {
    "h": 218.084,
    "s": 71.064,
    "l": 53.922
  },
  "oklch": {
    "l": 0.57294,
    "c": 0.17419,
    "h": 260.6
  },
  "luminance": 0.18266
}

Semantic roles & 50–950 ramp

primary

#3673DD

secondary

#DBC194

accent

#AC3AEE

background

#F8F9FE

surface

#F0F2FD

border

#CBCCD5

text

#0C0E16

muted

#7D7E84

Preview Lab

Preview with #3673DD

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

Preview Lab → · Contrast checker → · Palette generator →