#3673D1#3673D1

#3673D1 is a mid, vivid blue. Relative luminance 0.176; OKLCH L 56.5% C 0.158 H 258.9°. Best body text is #FFFFFF at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#3673D1
RGB	rgb(54, 115, 209)
HSL	hsl(216, 63%, 52%)
HSV	hsv(216, 74%, 82%)
CMYK	cmyk(74.2%, 45%, 0%, 18%)
CIE-LAB	lab(49.07, 12.70, -54.22)
CIE-LCH	lch(49.07, 55.68, 283.18°)
OKLab	oklab(56.48% -0.0304 -0.1554)
OKLCH	oklch(56.48% 0.158 258.9)
XYZ	xyz(19.1565, 17.6470, 62.7059)
Luminance	0.1765 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3673D1 #D19436

analogous

#36C1D1 #3673D1 #4736D1

triadic

#3673D1 #D13673 #73D136

tetradic

#3673D1 #D136C1 #D19436 #36D147

square

#3673D1 #D136C1 #D19436 #36D147

split-complementary

#3673D1 #D14736 #C1D136

monochromatic

#1A3D72 #2657A4 #3673D1 #6896DC #9AB8E8

Accessibility & contrast

On white

4.64

#3673D1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#3673D1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3673D1

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3673D1	#FFFFFF	#000000	##FFFFFF
##3673D1	1.00	4.64	4.53	4.64
#FFFFFF	4.64	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#437CD5

Deuteranopia (green-blind)

#226ECF

Tritanopia (blue-blind)

#008998

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3673d1;
/* rgb */ color: rgb(54, 115, 209);
/* oklch */ color: oklch(56.5% 0.158 258.9);

Tailwind

colors: {
  custom: {
    50: '#819ae0',
    500: '#3673d1',
    950: '#000000',
  },
}

SCSS

$custom: #3673d1;
$custom-light: #819ae0;
$custom-dark: #000000;

JSON

{
  "hex": "#3673d1",
  "rgb": {
    "r": 54,
    "g": 115,
    "b": 209
  },
  "hsl": {
    "h": 216.387,
    "s": 62.753,
    "l": 51.569
  },
  "oklch": {
    "l": 0.56477,
    "c": 0.15831,
    "h": 258.9
  },
  "luminance": 0.17649
}

Semantic roles & 50–950 ramp

primary

#3673D1

secondary

#D3B98F

accent

#A542E6

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3673D1

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

Preview Lab → · Contrast checker → · Palette generator →