#3766C4#3766C4

#3766C4 is a mid, vivid blue. Relative luminance 0.143; OKLCH L 52.8% C 0.156 H 262.4°. Best body text is #FFFFFF at 5.44:1 contrast (WCAG AA passes).

Color values

HEX	#3766C4
RGB	rgb(55, 102, 196)
HSL	hsl(220, 56%, 49%)
HSV	hsv(220, 72%, 77%)
CMYK	cmyk(71.9%, 48%, 0%, 23.1%)
CIE-LAB	lab(44.66, 16.26, -53.84)
CIE-LCH	lch(44.66, 56.24, 286.81°)
OKLab	oklab(52.84% -0.0206 -0.1545)
OKLCH	oklch(52.84% 0.156 262.4)
XYZ	xyz(16.2872, 14.2988, 54.1154)
Luminance	0.1430 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3766C4 #C49537

analogous

#37ADC4 #3766C4 #4F37C4

triadic

#3766C4 #C43766 #66C437

tetradic

#3766C4 #C437AD #C49537 #37C44F

square

#3766C4 #C437AD #C49537 #37C44F

split-complementary

#3766C4 #C44F37 #ADC437

monochromatic

#1C3464 #2A4D94 #3766C4 #658AD4 #94AEE1

Accessibility & contrast

On white

5.44

#3766C4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.86

#3766C4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3766C4

5.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3766C4	#FFFFFF	#000000	##FFFFFF
##3766C4	1.00	5.44	3.86	5.44
#FFFFFF	5.44	1.00	21.00	1.00
#000000	3.86	21.00	1.00	21.00
##FFFFFF	5.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3371C7

Deuteranopia (green-blind)

#0864C2

Tritanopia (blue-blind)

#007C8B

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3766c4;
/* rgb */ color: rgb(55, 102, 196);
/* oklch */ color: oklch(52.8% 0.156 262.4);

Tailwind

colors: {
  custom: {
    50: '#7f91d6',
    500: '#3766c4',
    950: '#000000',
  },
}

SCSS

$custom: #3766c4;
$custom-light: #7f91d6;
$custom-dark: #000000;

JSON

{
  "hex": "#3766c4",
  "rgb": {
    "r": 55,
    "g": 102,
    "b": 196
  },
  "hsl": {
    "h": 220,
    "s": 56.175,
    "l": 49.216
  },
  "oklch": {
    "l": 0.52837,
    "c": 0.15584,
    "h": 262.4
  },
  "luminance": 0.143
}

Semantic roles & 50–950 ramp

primary

#3766C4

secondary

#CCB68B

accent

#AD48DF

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3766C4

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

Preview Lab → · Contrast checker → · Palette generator →