#3668B9#3668B9

#3668B9 is a mid, vivid blue. Relative luminance 0.142; OKLCH L 52.5% C 0.139 H 259.6°. Best body text is #FFFFFF at 5.47:1 contrast (WCAG AA passes).

Color values

HEX	#3668B9
RGB	rgb(54, 104, 185)
HSL	hsl(217, 55%, 47%)
HSV	hsv(217, 71%, 73%)
CMYK	cmyk(70.8%, 43.8%, 0%, 27.5%)
CIE-LAB	lab(44.50, 10.78, -47.72)
CIE-LCH	lch(44.50, 48.92, 282.73°)
OKLab	oklab(52.48% -0.025 -0.1365)
OKLCH	oklch(52.48% 0.139 259.6)
XYZ	xyz(15.2254, 14.1861, 47.8253)
Luminance	0.1419 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3668B9 #B98736

analogous

#36AAB9 #3668B9 #4536B9

triadic

#3668B9 #B93668 #68B936

tetradic

#3668B9 #B936AA #B98736 #36B945

square

#3668B9 #B936AA #B98736 #36B945

split-complementary

#3668B9 #B94536 #AAB936

monochromatic

#1A335A #284D8A #3668B9 #5D88D0 #8CABDD

Accessibility & contrast

On white

5.47

#3668B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.84

#3668B9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3668B9

5.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3668B9	#FFFFFF	#000000	##FFFFFF
##3668B9	1.00	5.47	3.84	5.47
#FFFFFF	5.47	1.00	21.00	1.00
#000000	3.84	21.00	1.00	21.00
##FFFFFF	5.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4070BC

Deuteranopia (green-blind)

#2964B7

Tritanopia (blue-blind)

#007B87

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3668b9;
/* rgb */ color: rgb(54, 104, 185);
/* oklch */ color: oklch(52.5% 0.139 259.6);

Tailwind

colors: {
  custom: {
    50: '#7d92ce',
    500: '#3668b9',
    950: '#000000',
  },
}

SCSS

$custom: #3668b9;
$custom-light: #7d92ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3668b9",
  "rgb": {
    "r": 54,
    "g": 104,
    "b": 185
  },
  "hsl": {
    "h": 217.099,
    "s": 54.812,
    "l": 46.863
  },
  "oklch": {
    "l": 0.52483,
    "c": 0.13873,
    "h": 259.6
  },
  "luminance": 0.14188
}

Semantic roles & 50–950 ramp

primary

#3668B9

secondary

#C8AE83

accent

#A54ADE

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3668B9

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

Preview Lab → · Contrast checker → · Palette generator →