#3679DD#3679DD

#3679DD is a mid, vivid blue. Relative luminance 0.197; OKLCH L 58.6% C 0.167 H 258.5°. Best body text is #000000 at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#3679DD
RGB	rgb(54, 121, 221)
HSL	hsl(216, 71%, 54%)
HSV	hsv(216, 76%, 87%)
CMYK	cmyk(75.6%, 45.2%, 0%, 13.3%)
CIE-LAB	lab(51.47, 13.38, -57.16)
CIE-LCH	lch(51.47, 58.70, 283.18°)
OKLab	oklab(58.57% -0.0333 -0.1639)
OKLCH	oklch(58.57% 0.167 258.5)
XYZ	xyz(21.4051, 19.6770, 71.0625)
Luminance	0.1968 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3679DD #DD9A36

analogous

#36CDDD #3679DD #4736DD

triadic

#3679DD #DD3679 #79DD36

tetradic

#3679DD #DD36CD #DD9A36 #36DD47

square

#3679DD #DD36CD #DD9A36 #36DD47

split-complementary

#3679DD #DD4736 #CDDD36

monochromatic

#164283 #1F5CB7 #3679DD #6A9CE6 #9FBFEF

Accessibility & contrast

On white

4.25

#3679DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.94

#3679DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3679DD

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3679DD	#FFFFFF	#000000	##000000
##3679DD	1.00	4.25	4.94	4.94
#FFFFFF	4.25	1.00	21.00	21.00
#000000	4.94	21.00	1.00	1.00
##000000	4.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4583E1

Deuteranopia (green-blind)

#1E74DB

Tritanopia (blue-blind)

#0091A0

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3679dd;
/* rgb */ color: rgb(54, 121, 221);
/* oklch */ color: oklch(58.6% 0.167 258.5);

Tailwind

colors: {
  custom: {
    50: '#849fe8',
    500: '#3679dd',
    950: '#000000',
  },
}

SCSS

$custom: #3679dd;
$custom-light: #849fe8;
$custom-dark: #000000;

JSON

{
  "hex": "#3679dd",
  "rgb": {
    "r": 54,
    "g": 121,
    "b": 221
  },
  "hsl": {
    "h": 215.928,
    "s": 71.064,
    "l": 53.922
  },
  "oklch": {
    "l": 0.58567,
    "c": 0.16724,
    "h": 258.5
  },
  "luminance": 0.19679
}

Semantic roles & 50–950 ramp

primary

#3679DD

secondary

#DBBE94

accent

#A63AEE

background

#F8F9FE

surface

#F0F2FD

border

#CBCCD5

text

#0C0E16

muted

#7D7E84

Preview Lab

Preview with #3679DD

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

Preview Lab → · Contrast checker → · Palette generator →