#3668B8#3668B8

#3668B8 is a mid, vivid blue. Relative luminance 0.141; OKLCH L 52.4% C 0.137 H 259.4°. Best body text is #FFFFFF at 5.48:1 contrast (WCAG AA passes).

Color values

HEX	#3668B8
RGB	rgb(54, 104, 184)
HSL	hsl(217, 55%, 47%)
HSV	hsv(217, 71%, 72%)
CMYK	cmyk(70.7%, 43.5%, 0%, 27.8%)
CIE-LAB	lab(44.44, 10.41, -47.24)
CIE-LCH	lch(44.44, 48.37, 282.43°)
OKLab	oklab(52.42% -0.0252 -0.135)
OKLCH	oklch(52.42% 0.137 259.4)
XYZ	xyz(15.1202, 14.1440, 47.2713)
Luminance	0.1415 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3668B8 #B88636

analogous

#36A9B8 #3668B8 #4536B8

triadic

#3668B8 #B83668 #68B836

tetradic

#3668B8 #B836A9 #B88636 #36B845

square

#3668B8 #B836A9 #B88636 #36B845

split-complementary

#3668B8 #B84536 #A9B836

monochromatic

#1A3359 #284D89 #3668B8 #5C88CF #8BABDD

Accessibility & contrast

On white

5.48

#3668B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.83

#3668B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3668B8

5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3668B8	#FFFFFF	#000000	##FFFFFF
##3668B8	1.00	5.48	3.83	5.48
#FFFFFF	5.48	1.00	21.00	1.00
#000000	3.83	21.00	1.00	21.00
##FFFFFF	5.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4170BB

Deuteranopia (green-blind)

#2A64B6

Tritanopia (blue-blind)

#007B87

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3668b8;
/* rgb */ color: rgb(54, 104, 184);
/* oklch */ color: oklch(52.4% 0.137 259.4);

Tailwind

colors: {
  custom: {
    50: '#7d92ce',
    500: '#3668b8',
    950: '#000000',
  },
}

SCSS

$custom: #3668b8;
$custom-light: #7d92ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3668b8",
  "rgb": {
    "r": 54,
    "g": 104,
    "b": 184
  },
  "hsl": {
    "h": 216.923,
    "s": 54.622,
    "l": 46.667
  },
  "oklch": {
    "l": 0.52417,
    "c": 0.13737,
    "h": 259.4
  },
  "luminance": 0.14146
}

Semantic roles & 50–950 ramp

primary

#3668B8

secondary

#C7AD82

accent

#A54ADE

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0D13

muted

#7C7D82

Preview Lab

Preview with #3668B8

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

Preview Lab → · Contrast checker → · Palette generator →