#3966AE#3966AE

#3966AE is a mid, vivid blue. Relative luminance 0.134; OKLCH L 51.5% C 0.125 H 259.4°. Best body text is #FFFFFF at 5.70:1 contrast (WCAG AA passes).

Color values

HEX	#3966AE
RGB	rgb(57, 102, 174)
HSL	hsl(217, 51%, 45%)
HSV	hsv(217, 67%, 68%)
CMYK	cmyk(67.2%, 41.4%, 0%, 31.8%)
CIE-LAB	lab(43.40, 8.50, -43.04)
CIE-LCH	lch(43.40, 43.87, 281.17°)
OKLab	oklab(51.46% -0.023 -0.1227)
OKLCH	oklch(51.46% 0.125 259.4)
XYZ	xyz(14.0760, 13.4272, 41.8861)
Luminance	0.1343 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3966AE #AE8139

analogous

#39A0AE #3966AE #4639AE

triadic

#3966AE #AE3966 #66AE39

tetradic

#3966AE #AE39A0 #AE8139 #39AE46

square

#3966AE #AE39A0 #AE8139 #39AE46

split-complementary

#3966AE #AE4639 #A0AE39

monochromatic

#1B3052 #2A4B80 #3966AE #5B85C9 #89A8D8

Accessibility & contrast

On white

5.70

#3966AE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#3966AE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3966AE

5.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3966AE	#FFFFFF	#000000	##FFFFFF
##3966AE	1.00	5.70	3.69	5.70
#FFFFFF	5.70	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#456CB1

Deuteranopia (green-blind)

#3362AD

Tritanopia (blue-blind)

#007781

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3966ae;
/* rgb */ color: rgb(57, 102, 174);
/* oklch */ color: oklch(51.5% 0.125 259.4);

Tailwind

colors: {
  custom: {
    50: '#7c91c6',
    500: '#3966ae',
    950: '#000000',
  },
}

SCSS

$custom: #3966ae;
$custom-light: #7c91c6;
$custom-dark: #000000;

JSON

{
  "hex": "#3966ae",
  "rgb": {
    "r": 57,
    "g": 102,
    "b": 174
  },
  "hsl": {
    "h": 216.923,
    "s": 50.649,
    "l": 45.294
  },
  "oklch": {
    "l": 0.51458,
    "c": 0.12483,
    "h": 259.4
  },
  "luminance": 0.13429
}

Semantic roles & 50–950 ramp

primary

#3966AE

secondary

#C3A980

accent

#A44EDA

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #3966AE

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

Preview Lab → · Contrast checker → · Palette generator →