#3768B3#3768B3

#3768B3 is a mid, vivid blue. Relative luminance 0.140; OKLCH L 52.1% C 0.130 H 258.7°. Best body text is #FFFFFF at 5.54:1 contrast (WCAG AA passes).

Color values

HEX	#3768B3
RGB	rgb(55, 104, 179)
HSL	hsl(216, 53%, 46%)
HSV	hsv(216, 69%, 70%)
CMYK	cmyk(69.3%, 41.9%, 0%, 29.8%)
CIE-LAB	lab(44.18, 8.73, -44.72)
CIE-LCH	lch(44.18, 45.57, 281.04°)
OKLab	oklab(52.14% -0.0255 -0.1276)
OKLCH	oklch(52.14% 0.13 258.7)
XYZ	xyz(14.6596, 13.9660, 44.5622)
Luminance	0.1397 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3768B3 #B38237

analogous

#37A6B3 #3768B3 #4437B3

triadic

#3768B3 #B33768 #68B337

tetradic

#3768B3 #B337A6 #B38237 #37B344

square

#3768B3 #B337A6 #B38237 #37B344

split-complementary

#3768B3 #B34437 #A6B337

monochromatic

#1A3255 #294D84 #3768B3 #5B88CD #8AAADB

Accessibility & contrast

On white

5.54

#3768B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.79

#3768B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3768B3

5.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3768B3	#FFFFFF	#000000	##FFFFFF
##3768B3	1.00	5.54	3.79	5.54
#FFFFFF	5.54	1.00	21.00	1.00
#000000	3.79	21.00	1.00	21.00
##FFFFFF	5.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#456FB6

Deuteranopia (green-blind)

#3163B1

Tritanopia (blue-blind)

#007985

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3768b3;
/* rgb */ color: rgb(55, 104, 179);
/* oklch */ color: oklch(52.1% 0.130 258.7);

Tailwind

colors: {
  custom: {
    50: '#7c92ca',
    500: '#3768b3',
    950: '#000000',
  },
}

SCSS

$custom: #3768b3;
$custom-light: #7c92ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3768b3",
  "rgb": {
    "r": 55,
    "g": 104,
    "b": 179
  },
  "hsl": {
    "h": 216.29,
    "s": 52.991,
    "l": 45.882
  },
  "oklch": {
    "l": 0.52136,
    "c": 0.13016,
    "h": 258.7
  },
  "luminance": 0.13968
}

Semantic roles & 50–950 ramp

primary

#3768B3

secondary

#C5AA81

accent

#A34BDC

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0D13

muted

#7C7D82

Preview Lab

Preview with #3768B3

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

Preview Lab → · Contrast checker → · Palette generator →