#3965B8#3965B8

#3965B8 is a mid, vivid blue. Relative luminance 0.136; OKLCH L 51.9% C 0.140 H 261.8°. Best body text is #FFFFFF at 5.63:1 contrast (WCAG AA passes).

Color values

HEX	#3965B8
RGB	rgb(57, 101, 184)
HSL	hsl(219, 53%, 47%)
HSV	hsv(219, 69%, 72%)
CMYK	cmyk(69%, 45.1%, 0%, 27.8%)
CIE-LAB	lab(43.71, 12.78, -48.40)
CIE-LCH	lch(43.71, 50.06, 284.79°)
OKLab	oklab(51.89% -0.02 -0.1385)
OKLCH	oklch(51.89% 0.14 261.8)
XYZ	xyz(14.9897, 13.6364, 47.1802)
Luminance	0.1364 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3965B8 #B88C39

analogous

#39A4B8 #3965B8 #4D39B8

triadic

#3965B8 #B83965 #65B839

tetradic

#3965B8 #B839A4 #B88C39 #39B84D

square

#3965B8 #B839A4 #B88C39 #39B84D

split-complementary

#3965B8 #B84D39 #A4B839

monochromatic

#1C325B #2B4B89 #3965B8 #6086CE #8FAADC

Accessibility & contrast

On white

5.63

#3965B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.73

#3965B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3965B8

5.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3965B8	#FFFFFF	#000000	##FFFFFF
##3965B8	1.00	5.63	3.73	5.63
#FFFFFF	5.63	1.00	21.00	1.00
#000000	3.73	21.00	1.00	21.00
##FFFFFF	5.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C6EBB

Deuteranopia (green-blind)

#2462B6

Tritanopia (blue-blind)

#007885

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3965b8;
/* rgb */ color: rgb(57, 101, 184);
/* oklch */ color: oklch(51.9% 0.140 261.8);

Tailwind

colors: {
  custom: {
    50: '#7e90ce',
    500: '#3965b8',
    950: '#000000',
  },
}

SCSS

$custom: #3965b8;
$custom-light: #7e90ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3965b8",
  "rgb": {
    "r": 57,
    "g": 101,
    "b": 184
  },
  "hsl": {
    "h": 219.213,
    "s": 52.697,
    "l": 47.255
  },
  "oklch": {
    "l": 0.51887,
    "c": 0.1399,
    "h": 261.8
  },
  "luminance": 0.13638
}

Semantic roles & 50–950 ramp

primary

#3965B8

secondary

#C7B086

accent

#AA4CDC

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #3965B8

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

Preview Lab → · Contrast checker → · Palette generator →