#3964B2#3964B2

#3964B2 is a mid, vivid blue. Relative luminance 0.132; OKLCH L 51.3% C 0.133 H 261.3°. Best body text is #FFFFFF at 5.77:1 contrast (WCAG AA passes).

Color values

HEX	#3964B2
RGB	rgb(57, 100, 178)
HSL	hsl(219, 51%, 46%)
HSV	hsv(219, 68%, 70%)
CMYK	cmyk(68%, 43.8%, 0%, 30.2%)
CIE-LAB	lab(43.06, 11.23, -45.93)
CIE-LCH	lch(43.06, 47.28, 283.74°)
OKLab	oklab(51.27% -0.0202 -0.1312)
OKLCH	oklch(51.27% 0.133 261.3)
XYZ	xyz(14.2775, 13.1971, 43.9057)
Luminance	0.1320 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3964B2 #B28739

analogous

#39A0B2 #3964B2 #4B39B2

triadic

#3964B2 #B23964 #64B239

tetradic

#3964B2 #B239A0 #B28739 #39B24B

square

#3964B2 #B239A0 #B28739 #39B24B

split-complementary

#3964B2 #B24B39 #A0B239

monochromatic

#1B3055 #2A4A84 #3964B2 #5D84CB #8BA7DA

Accessibility & contrast

On white

5.77

#3964B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.64

#3964B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3964B2

5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3964B2	#FFFFFF	#000000	##FFFFFF
##3964B2	1.00	5.77	3.64	5.77
#FFFFFF	5.77	1.00	21.00	1.00
#000000	3.64	21.00	1.00	21.00
##FFFFFF	5.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F6CB5

Deuteranopia (green-blind)

#2A61B0

Tritanopia (blue-blind)

#007682

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3964b2;
/* rgb */ color: rgb(57, 100, 178);
/* oklch */ color: oklch(51.3% 0.133 261.3);

Tailwind

colors: {
  custom: {
    50: '#7d8fc9',
    500: '#3964b2',
    950: '#000000',
  },
}

SCSS

$custom: #3964b2;
$custom-light: #7d8fc9;
$custom-dark: #000000;

JSON

{
  "hex": "#3964b2",
  "rgb": {
    "r": 57,
    "g": 100,
    "b": 178
  },
  "hsl": {
    "h": 218.678,
    "s": 51.489,
    "l": 46.078
  },
  "oklch": {
    "l": 0.5127,
    "c": 0.13276,
    "h": 261.3
  },
  "luminance": 0.13199
}

Semantic roles & 50–950 ramp

primary

#3964B2

secondary

#C4AD82

accent

#A84DDB

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #3964B2

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

Preview Lab → · Contrast checker → · Palette generator →