#3966AF#3966AF

#3966AF is a mid, vivid blue. Relative luminance 0.135; OKLCH L 51.5% C 0.126 H 259.6°. Best body text is #FFFFFF at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#3966AF
RGB	rgb(57, 102, 175)
HSL	hsl(217, 51%, 45%)
HSV	hsv(217, 67%, 69%)
CMYK	cmyk(67.4%, 41.7%, 0%, 31.4%)
CIE-LAB	lab(43.46, 8.86, -43.54)
CIE-LCH	lch(43.46, 44.43, 281.51°)
OKLab	oklab(51.52% -0.0227 -0.1242)
OKLCH	oklch(51.52% 0.126 259.6)
XYZ	xyz(14.1738, 13.4663, 42.4014)
Luminance	0.1347 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3966AF #AF8239

analogous

#39A1AF #3966AF #4739AF

triadic

#3966AF #AF3966 #66AF39

tetradic

#3966AF #AF39A1 #AF8239 #39AF47

square

#3966AF #AF39A1 #AF8239 #39AF47

split-complementary

#3966AF #AF4739 #A1AF39

monochromatic

#1B3053 #2A4B81 #3966AF #5B86CA #8AA8D9

Accessibility & contrast

On white

5.69

#3966AF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#3966AF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3966AF

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3966AF	#FFFFFF	#000000	##FFFFFF
##3966AF	1.00	5.69	3.69	5.69
#FFFFFF	5.69	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#446DB2

Deuteranopia (green-blind)

#3262AE

Tritanopia (blue-blind)

#007782

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3966af;
/* rgb */ color: rgb(57, 102, 175);
/* oklch */ color: oklch(51.5% 0.126 259.6);

Tailwind

colors: {
  custom: {
    50: '#7c91c7',
    500: '#3966af',
    950: '#000000',
  },
}

SCSS

$custom: #3966af;
$custom-light: #7c91c7;
$custom-dark: #000000;

JSON

{
  "hex": "#3966af",
  "rgb": {
    "r": 57,
    "g": 102,
    "b": 175
  },
  "hsl": {
    "h": 217.119,
    "s": 50.862,
    "l": 45.49
  },
  "oklch": {
    "l": 0.51522,
    "c": 0.12623,
    "h": 259.6
  },
  "luminance": 0.13468
}

Semantic roles & 50–950 ramp

primary

#3966AF

secondary

#C3AA81

accent

#A54DDA

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #3966AF

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

Preview Lab → · Contrast checker → · Palette generator →