#3669BB#3669BB

#3669BB is a mid, vivid blue. Relative luminance 0.145; OKLCH L 52.8% C 0.140 H 259.5°. Best body text is #FFFFFF at 5.39:1 contrast (WCAG AA passes).

Color values

HEX	#3669BB
RGB	rgb(54, 105, 187)
HSL	hsl(217, 55%, 47%)
HSV	hsv(217, 71%, 73%)
CMYK	cmyk(71.1%, 43.9%, 0%, 26.7%)
CIE-LAB	lab(44.90, 10.88, -48.23)
CIE-LCH	lch(44.90, 49.45, 282.71°)
OKLab	oklab(52.84% -0.0256 -0.1379)
OKLCH	oklch(52.84% 0.14 259.5)
XYZ	xyz(15.5393, 14.4736, 48.9788)
Luminance	0.1447 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3669BB #BB8836

analogous

#36ACBB #3669BB #4536BB

triadic

#3669BB #BB3669 #69BB36

tetradic

#3669BB #BB36AC #BB8836 #36BB45

square

#3669BB #BB36AC #BB8836 #36BB45

split-complementary

#3669BB #BB4536 #ACBB36

monochromatic

#1B345C #284E8C #3669BB #5E8AD0 #8DACDE

Accessibility & contrast

On white

5.39

#3669BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.89

#3669BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3669BB

5.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3669BB	#FFFFFF	#000000	##FFFFFF
##3669BB	1.00	5.39	3.89	5.39
#FFFFFF	5.39	1.00	21.00	1.00
#000000	3.89	21.00	1.00	21.00
##FFFFFF	5.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4171BE

Deuteranopia (green-blind)

#2965B9

Tritanopia (blue-blind)

#007C89

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3669bb;
/* rgb */ color: rgb(54, 105, 187);
/* oklch */ color: oklch(52.8% 0.140 259.5);

Tailwind

colors: {
  custom: {
    50: '#7d93d0',
    500: '#3669bb',
    950: '#000000',
  },
}

SCSS

$custom: #3669bb;
$custom-light: #7d93d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3669bb",
  "rgb": {
    "r": 54,
    "g": 105,
    "b": 187
  },
  "hsl": {
    "h": 216.992,
    "s": 55.187,
    "l": 47.255
  },
  "oklch": {
    "l": 0.52835,
    "c": 0.1403,
    "h": 259.5
  },
  "luminance": 0.14475
}

Semantic roles & 50–950 ramp

primary

#3669BB

secondary

#C9AE84

accent

#A549DF

background

#F8F9FC

surface

#EFF1F9

border

#CACBD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #3669BB

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

Preview Lab → · Contrast checker → · Palette generator →