#3964B8#3964B8

#3964B8 is a mid, vivid blue. Relative luminance 0.134; OKLCH L 51.7% C 0.141 H 262.2°. Best body text is #FFFFFF at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#3964B8
RGB	rgb(57, 100, 184)
HSL	hsl(220, 53%, 47%)
HSV	hsv(220, 69%, 72%)
CMYK	cmyk(69%, 45.7%, 0%, 27.8%)
CIE-LAB	lab(43.42, 13.42, -48.85)
CIE-LCH	lch(43.42, 50.66, 285.36°)
OKLab	oklab(51.67% -0.0191 -0.1398)
OKLCH	oklch(51.67% 0.141 262.2)
XYZ	xyz(14.8932, 13.4434, 47.1481)
Luminance	0.1344 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3964B8 #B88D39

analogous

#39A4B8 #3964B8 #4E39B8

triadic

#3964B8 #B83964 #64B839

tetradic

#3964B8 #B839A4 #B88D39 #39B84E

square

#3964B8 #B839A4 #B88D39 #39B84E

split-complementary

#3964B8 #B84E39 #A4B839

monochromatic

#1C315B #2B4B89 #3964B8 #6085CE #8FA9DC

Accessibility & contrast

On white

5.69

#3964B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#3964B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3964B8

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3964B8	#FFFFFF	#000000	##FFFFFF
##3964B8	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)

#3A6DBB

Deuteranopia (green-blind)

#2161B6

Tritanopia (blue-blind)

#007885

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3964b8;
/* rgb */ color: rgb(57, 100, 184);
/* oklch */ color: oklch(51.7% 0.141 262.2);

Tailwind

colors: {
  custom: {
    50: '#7e8fce',
    500: '#3964b8',
    950: '#000000',
  },
}

SCSS

$custom: #3964b8;
$custom-light: #7e8fce;
$custom-dark: #000000;

JSON

{
  "hex": "#3964b8",
  "rgb": {
    "r": 57,
    "g": 100,
    "b": 184
  },
  "hsl": {
    "h": 219.685,
    "s": 52.697,
    "l": 47.255
  },
  "oklch": {
    "l": 0.51669,
    "c": 0.14111,
    "h": 262.2
  },
  "luminance": 0.13445
}

Semantic roles & 50–950 ramp

primary

#3964B8

secondary

#C7B186

accent

#AB4CDC

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #3964B8

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

Preview Lab → · Contrast checker → · Palette generator →