#3961BC#3961BC

#3961BC is a mid, vivid blue. Relative luminance 0.131; OKLCH L 51.3% C 0.150 H 264.0°. Best body text is #FFFFFF at 5.82:1 contrast (WCAG AA passes).

Color values

HEX	#3961BC
RGB	rgb(57, 97, 188)
HSL	hsl(222, 53%, 48%)
HSV	hsv(222, 70%, 74%)
CMYK	cmyk(69.7%, 48.4%, 0%, 26.3%)
CIE-LAB	lab(42.84, 16.81, -52.13)
CIE-LCH	lch(42.84, 54.77, 287.88°)
OKLab	oklab(51.3% -0.0157 -0.1495)
OKLCH	oklch(51.3% 0.15 264)
XYZ	xyz(15.0359, 13.0486, 49.2934)
Luminance	0.1305 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3961BC #BC9439

analogous

#39A2BC #3961BC #5239BC

triadic

#3961BC #BC3961 #61BC39

tetradic

#3961BC #BC39A2 #BC9439 #39BC52

square

#3961BC #BC39A2 #BC9439 #39BC52

split-complementary

#3961BC #BC5239 #A2BC39

monochromatic

#1D315E #2B498D #3961BC #6384D0 #92A9DE

Accessibility & contrast

On white

5.82

#3961BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.61

#3961BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3961BC

5.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3961BC	#FFFFFF	#000000	##FFFFFF
##3961BC	1.00	5.82	3.61	5.82
#FFFFFF	5.82	1.00	21.00	1.00
#000000	3.61	21.00	1.00	21.00
##FFFFFF	5.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#306CBF

Deuteranopia (green-blind)

#0B5FBA

Tritanopia (blue-blind)

#007685

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3961bc;
/* rgb */ color: rgb(57, 97, 188);
/* oklch */ color: oklch(51.3% 0.150 264.0);

Tailwind

colors: {
  custom: {
    50: '#7f8dd1',
    500: '#3961bc',
    950: '#000000',
  },
}

SCSS

$custom: #3961bc;
$custom-light: #7f8dd1;
$custom-dark: #000000;

JSON

{
  "hex": "#3961bc",
  "rgb": {
    "r": 57,
    "g": 97,
    "b": 188
  },
  "hsl": {
    "h": 221.679,
    "s": 53.469,
    "l": 48.039
  },
  "oklch": {
    "l": 0.513,
    "c": 0.15031,
    "h": 264
  },
  "luminance": 0.1305
}

Semantic roles & 50–950 ramp

primary

#3961BC

secondary

#C9B588

accent

#B04BDD

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3961BC

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

Preview Lab → · Contrast checker → · Palette generator →