#3766AC#3766AC

#3766AC is a mid, vivid blue. Relative luminance 0.133; OKLCH L 51.2% C 0.123 H 258.2°. Best body text is #FFFFFF at 5.74:1 contrast (WCAG AA passes).

Color values

HEX	#3766AC
RGB	rgb(55, 102, 172)
HSL	hsl(216, 52%, 45%)
HSV	hsv(216, 68%, 67%)
CMYK	cmyk(68%, 40.7%, 0%, 32.5%)
CIE-LAB	lab(43.20, 7.44, -42.19)
CIE-LCH	lch(43.20, 42.84, 279.99°)
OKLab	oklab(51.24% -0.025 -0.1202)
OKLCH	oklch(51.24% 0.123 258.2)
XYZ	xyz(13.7706, 13.2921, 40.8616)
Luminance	0.1329 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3766AC #AC7D37

analogous

#37A1AC #3766AC #4237AC

triadic

#3766AC #AC3766 #66AC37

tetradic

#3766AC #AC37A1 #AC7D37 #37AC42

square

#3766AC #AC37A1 #AC7D37 #37AC42

split-complementary

#3766AC #AC4237 #A1AC37

monochromatic

#192F4F #284B7E #3766AC #5785C9 #85A7D8

Accessibility & contrast

On white

5.74

#3766AC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.66

#3766AC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3766AC

5.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3766AC	#FFFFFF	#000000	##FFFFFF
##3766AC	1.00	5.74	3.66	5.74
#FFFFFF	5.74	1.00	21.00	1.00
#000000	3.66	21.00	1.00	21.00
##FFFFFF	5.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#466CAF

Deuteranopia (green-blind)

#3461AB

Tritanopia (blue-blind)

#007680

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3766ac;
/* rgb */ color: rgb(55, 102, 172);
/* oklch */ color: oklch(51.2% 0.123 258.2);

Tailwind

colors: {
  custom: {
    50: '#7b91c5',
    500: '#3766ac',
    950: '#000000',
  },
}

SCSS

$custom: #3766ac;
$custom-light: #7b91c5;
$custom-dark: #000000;

JSON

{
  "hex": "#3766ac",
  "rgb": {
    "r": 55,
    "g": 102,
    "b": 172
  },
  "hsl": {
    "h": 215.897,
    "s": 51.542,
    "l": 44.51
  },
  "oklch": {
    "l": 0.51242,
    "c": 0.12281,
    "h": 258.2
  },
  "luminance": 0.13294
}

Semantic roles & 50–950 ramp

primary

#3766AC

secondary

#C2A67D

accent

#A24DDB

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #3766AC

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

Preview Lab → · Contrast checker → · Palette generator →