#3766AD#3766AD

#3766AD is a mid, vivid blue. Relative luminance 0.133; OKLCH L 51.3% C 0.124 H 258.5°. Best body text is #FFFFFF at 5.73:1 contrast (WCAG AA passes).

Color values

HEX	#3766AD
RGB	rgb(55, 102, 173)
HSL	hsl(216, 52%, 45%)
HSV	hsv(216, 68%, 68%)
CMYK	cmyk(68.2%, 41%, 0%, 32.2%)
CIE-LAB	lab(43.26, 7.80, -42.69)
CIE-LCH	lch(43.26, 43.39, 280.35°)
OKLab	oklab(51.31% -0.0248 -0.1217)
OKLCH	oklch(51.31% 0.124 258.5)
XYZ	xyz(13.8670, 13.3307, 41.3693)
Luminance	0.1333 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3766AD #AD7E37

analogous

#37A1AD #3766AD #4337AD

triadic

#3766AD #AD3766 #66AD37

tetradic

#3766AD #AD37A1 #AD7E37 #37AD43

square

#3766AD #AD37A1 #AD7E37 #37AD43

split-complementary

#3766AD #AD4337 #A1AD37

monochromatic

#192F50 #284B7F #3766AD #5785CA #86A7D8

Accessibility & contrast

On white

5.73

#3766AD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.67

#3766AD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3766AD

5.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3766AD	#FFFFFF	#000000	##FFFFFF
##3766AD	1.00	5.73	3.67	5.73
#FFFFFF	5.73	1.00	21.00	1.00
#000000	3.67	21.00	1.00	21.00
##FFFFFF	5.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#456CB0

Deuteranopia (green-blind)

#3361AC

Tritanopia (blue-blind)

#007681

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3766ad;
/* rgb */ color: rgb(55, 102, 173);
/* oklch */ color: oklch(51.3% 0.124 258.5);

Tailwind

colors: {
  custom: {
    50: '#7b91c6',
    500: '#3766ad',
    950: '#000000',
  },
}

SCSS

$custom: #3766ad;
$custom-light: #7b91c6;
$custom-dark: #000000;

JSON

{
  "hex": "#3766ad",
  "rgb": {
    "r": 55,
    "g": 102,
    "b": 173
  },
  "hsl": {
    "h": 216.102,
    "s": 51.754,
    "l": 44.706
  },
  "oklch": {
    "l": 0.51305,
    "c": 0.1242,
    "h": 258.5
  },
  "luminance": 0.13332
}

Semantic roles & 50–950 ramp

primary

#3766AD

secondary

#C2A77D

accent

#A24DDB

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #3766AD

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

Preview Lab → · Contrast checker → · Palette generator →