#3768B9#3768B9

#3768B9 is a mid, vivid blue. Relative luminance 0.142; OKLCH L 52.5% C 0.138 H 259.9°. Best body text is #FFFFFF at 5.46:1 contrast (WCAG AA passes).

Color values

HEX	#3768B9
RGB	rgb(55, 104, 185)
HSL	hsl(217, 54%, 47%)
HSV	hsv(217, 70%, 73%)
CMYK	cmyk(70.3%, 43.8%, 0%, 27.5%)
CIE-LAB	lab(44.54, 10.93, -47.66)
CIE-LCH	lch(44.54, 48.89, 282.92°)
OKLab	oklab(52.53% -0.0243 -0.1362)
OKLCH	oklch(52.53% 0.138 259.9)
XYZ	xyz(15.2797, 14.2140, 47.8279)
Luminance	0.1422 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3768B9 #B98837

analogous

#37A9B9 #3768B9 #4737B9

triadic

#3768B9 #B93768 #68B937

tetradic

#3768B9 #B937A9 #B98837 #37B947

square

#3768B9 #B937A9 #B98837 #37B947

split-complementary

#3768B9 #B94737 #A9B937

monochromatic

#1B335B #294D8A #3768B9 #5E89CF #8DABDD

Accessibility & contrast

On white

5.46

#3768B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.84

#3768B9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3768B9

5.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3768B9	#FFFFFF	#000000	##FFFFFF
##3768B9	1.00	5.46	3.84	5.46
#FFFFFF	5.46	1.00	21.00	1.00
#000000	3.84	21.00	1.00	21.00
##FFFFFF	5.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4170BC

Deuteranopia (green-blind)

#2964B7

Tritanopia (blue-blind)

#007B87

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3768b9;
/* rgb */ color: rgb(55, 104, 185);
/* oklch */ color: oklch(52.5% 0.138 259.9);

Tailwind

colors: {
  custom: {
    50: '#7d92ce',
    500: '#3768b9',
    950: '#000000',
  },
}

SCSS

$custom: #3768b9;
$custom-light: #7d92ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3768b9",
  "rgb": {
    "r": 55,
    "g": 104,
    "b": 185
  },
  "hsl": {
    "h": 217.385,
    "s": 54.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.52525,
    "c": 0.13839,
    "h": 259.9
  },
  "luminance": 0.14216
}

Semantic roles & 50–950 ramp

primary

#3768B9

secondary

#C8AE84

accent

#A64ADE

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0D14

muted

#7C7D82

Preview Lab

Preview with #3768B9

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

Preview Lab → · Contrast checker → · Palette generator →