#3649BB#3649BB

#3649BB is a mid, vivid blue. Relative luminance 0.091; OKLCH L 46.3% C 0.180 H 270.4°. Best body text is #FFFFFF at 7.43:1 contrast (WCAG AA passes).

Color values

HEX	#3649BB
RGB	rgb(54, 73, 187)
HSL	hsl(231, 55%, 47%)
HSV	hsv(231, 71%, 73%)
CMYK	cmyk(71.1%, 61%, 0%, 26.7%)
CIE-LAB	lab(36.24, 31.56, -62.23)
CIE-LCH	lch(36.24, 69.78, 296.89°)
OKLab	oklab(46.27% 0.0014 -0.1796)
OKLCH	oklch(46.27% 0.18 270.4)
XYZ	xyz(12.8704, 9.1359, 48.0892)
Luminance	0.0914 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3649BB #BBA836

analogous

#368BBB #3649BB #6636BB

triadic

#3649BB #BB3649 #49BB36

tetradic

#3649BB #BB368B #BBA836 #36BB66

square

#3649BB #BB368B #BBA836 #36BB66

split-complementary

#3649BB #BB6636 #8BBB36

monochromatic

#1B245C #28368C #3649BB #5E6ED0 #8D99DE

Accessibility & contrast

On white

7.43

#3649BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#3649BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3649BB

7.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3649BB	#FFFFFF	#000000	##FFFFFF
##3649BB	1.00	7.43	2.83	7.43
#FFFFFF	7.43	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CBF

Deuteranopia (green-blind)

#004FB9

Tritanopia (blue-blind)

#00667B

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3649bb;
/* rgb */ color: rgb(54, 73, 187);
/* oklch */ color: oklch(46.3% 0.180 270.4);

Tailwind

colors: {
  custom: {
    50: '#7f7bd0',
    500: '#3649bb',
    950: '#000000',
  },
}

SCSS

$custom: #3649bb;
$custom-light: #7f7bd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3649bb",
  "rgb": {
    "r": 54,
    "g": 73,
    "b": 187
  },
  "hsl": {
    "h": 231.429,
    "s": 55.187,
    "l": 47.255
  },
  "oklch": {
    "l": 0.46274,
    "c": 0.17962,
    "h": 270.4
  },
  "luminance": 0.09137
}

Semantic roles & 50–950 ramp

primary

#3649BB

secondary

#C9BF84

accent

#C949DF

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #3649BB

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

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