#3647B8#3647B8

#3647B8 is a mid, vivid blue. Relative luminance 0.088; OKLCH L 45.6% C 0.178 H 270.9°. Best body text is #FFFFFF at 7.64:1 contrast (WCAG AA passes).

Color values

HEX	#3647B8
RGB	rgb(54, 71, 184)
HSL	hsl(232, 55%, 47%)
HSV	hsv(232, 71%, 72%)
CMYK	cmyk(70.7%, 61.4%, 0%, 27.8%)
CIE-LAB	lab(35.50, 31.77, -61.68)
CIE-LCH	lch(35.50, 69.38, 297.25°)
OKLab	oklab(45.65% 0.0029 -0.178)
OKLCH	oklch(45.65% 0.178 270.9)
XYZ	xyz(12.4234, 8.7502, 46.3723)
Luminance	0.0875 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3647B8 #B8A736

analogous

#3688B8 #3647B8 #6636B8

triadic

#3647B8 #B83647 #47B836

tetradic

#3647B8 #B83688 #B8A736 #36B866

square

#3647B8 #B83688 #B8A736 #36B866

split-complementary

#3647B8 #B86636 #88B836

monochromatic

#1A2259 #283589 #3647B8 #5C6BCF #8B96DD

Accessibility & contrast

On white

7.64

#3647B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#3647B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3647B8

7.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3647B8	#FFFFFF	#000000	##FFFFFF
##3647B8	1.00	7.64	2.75	7.64
#FFFFFF	7.64	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ABC

Deuteranopia (green-blind)

#004EB6

Tritanopia (blue-blind)

#006478

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #3647b8;
/* rgb */ color: rgb(54, 71, 184);
/* oklch */ color: oklch(45.6% 0.178 270.9);

Tailwind

colors: {
  custom: {
    50: '#7e7ace',
    500: '#3647b8',
    950: '#000000',
  },
}

SCSS

$custom: #3647b8;
$custom-light: #7e7ace;
$custom-dark: #000000;

JSON

{
  "hex": "#3647b8",
  "rgb": {
    "r": 54,
    "g": 71,
    "b": 184
  },
  "hsl": {
    "h": 232.154,
    "s": 54.622,
    "l": 46.667
  },
  "oklch": {
    "l": 0.45646,
    "c": 0.17804,
    "h": 270.9
  },
  "luminance": 0.08751
}

Semantic roles & 50–950 ramp

primary

#3647B8

secondary

#C7BE82

accent

#CB4ADE

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #3647B8

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

Preview Lab → · Contrast checker → · Palette generator →