#3965B3#3965B3

#3965B3 is a mid, vivid blue. Relative luminance 0.134; OKLCH L 51.6% C 0.133 H 260.9°. Best body text is #FFFFFF at 5.70:1 contrast (WCAG AA passes).

Color values

HEX	#3965B3
RGB	rgb(57, 101, 179)
HSL	hsl(218, 52%, 46%)
HSV	hsv(218, 68%, 70%)
CMYK	cmyk(68.2%, 43.6%, 0%, 29.8%)
CIE-LAB	lab(43.40, 10.96, -45.96)
CIE-LCH	lch(43.40, 47.25, 283.41°)
OKLab	oklab(51.56% -0.0209 -0.1313)
OKLCH	oklch(51.56% 0.133 260.9)
XYZ	xyz(14.4748, 13.4304, 44.4686)
Luminance	0.1343 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3965B3 #B38739

analogous

#39A2B3 #3965B3 #4A39B3

triadic

#3965B3 #B33965 #65B339

tetradic

#3965B3 #B339A2 #B38739 #39B34A

square

#3965B3 #B339A2 #B38739 #39B34A

split-complementary

#3965B3 #B34A39 #A2B339

monochromatic

#1B3156 #2A4B85 #3965B3 #5E85CC #8CA8DA

Accessibility & contrast

On white

5.70

#3965B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#3965B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3965B3

5.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3965B3	#FFFFFF	#000000	##FFFFFF
##3965B3	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)

#406DB6

Deuteranopia (green-blind)

#2B61B1

Tritanopia (blue-blind)

#007783

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3965b3;
/* rgb */ color: rgb(57, 101, 179);
/* oklch */ color: oklch(51.6% 0.133 260.9);

Tailwind

colors: {
  custom: {
    50: '#7d90ca',
    500: '#3965b3',
    950: '#000000',
  },
}

SCSS

$custom: #3965b3;
$custom-light: #7d90ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3965b3",
  "rgb": {
    "r": 57,
    "g": 101,
    "b": 179
  },
  "hsl": {
    "h": 218.361,
    "s": 51.695,
    "l": 46.275
  },
  "oklch": {
    "l": 0.51557,
    "c": 0.13296,
    "h": 260.9
  },
  "luminance": 0.13432
}

Semantic roles & 50–950 ramp

primary

#3965B3

secondary

#C5AD83

accent

#A84DDB

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #3965B3

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

Preview Lab → · Contrast checker → · Palette generator →