#3647BB#3647BB

#3647BB is a mid, vivid blue. Relative luminance 0.089; OKLCH L 45.9% C 0.182 H 270.9°. Best body text is #FFFFFF at 7.57:1 contrast (WCAG AA passes).

Color values

HEX	#3647BB
RGB	rgb(54, 71, 187)
HSL	hsl(232, 55%, 47%)
HSV	hsv(232, 71%, 73%)
CMYK	cmyk(71.1%, 62%, 0%, 26.7%)
CIE-LAB	lab(35.75, 32.85, -63.04)
CIE-LCH	lch(35.75, 71.09, 297.52°)
OKLab	oklab(45.91% 0.0028 -0.182)
OKLCH	oklch(45.91% 0.182 270.9)
XYZ	xyz(12.7412, 8.8773, 48.0461)
Luminance	0.0888 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.74

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3647BB #BBAA36

analogous

#3689BB #3647BB #6836BB

triadic

#3647BB #BB3647 #47BB36

tetradic

#3647BB #BB3689 #BBAA36 #36BB68

square

#3647BB #BB3689 #BBAA36 #36BB68

split-complementary

#3647BB #BB6836 #89BB36

monochromatic

#1B235C #28358C #3647BB #5E6CD0 #8D98DE

Accessibility & contrast

On white

7.57

#3647BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#3647BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3647BB

7.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3647BB	#FFFFFF	#000000	##FFFFFF
##3647BB	1.00	7.57	2.78	7.57
#FFFFFF	7.57	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ABF

Deuteranopia (green-blind)

#004EB9

Tritanopia (blue-blind)

#00657A

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #3647bb;
/* rgb */ color: rgb(54, 71, 187);
/* oklch */ color: oklch(45.9% 0.182 270.9);

Tailwind

colors: {
  custom: {
    50: '#7f7ad0',
    500: '#3647bb',
    950: '#000000',
  },
}

SCSS

$custom: #3647bb;
$custom-light: #7f7ad0;
$custom-dark: #000000;

JSON

{
  "hex": "#3647bb",
  "rgb": {
    "r": 54,
    "g": 71,
    "b": 187
  },
  "hsl": {
    "h": 232.331,
    "s": 55.187,
    "l": 47.255
  },
  "oklch": {
    "l": 0.45906,
    "c": 0.18203,
    "h": 270.9
  },
  "luminance": 0.08879
}

Semantic roles & 50–950 ramp

primary

#3647BB

secondary

#C9C084

accent

#CB49DF

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #3647BB

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

Preview Lab → · Contrast checker → · Palette generator →