#3961B7#3961B7

#3961B7 is a mid, vivid blue. Relative luminance 0.128; OKLCH L 51.0% C 0.143 H 263.4°. Best body text is #FFFFFF at 5.89:1 contrast (WCAG AA passes).

Color values

HEX	#3961B7
RGB	rgb(57, 97, 183)
HSL	hsl(221, 53%, 47%)
HSV	hsv(221, 69%, 72%)
CMYK	cmyk(68.9%, 47%, 0%, 28.2%)
CIE-LAB	lab(42.52, 14.98, -49.73)
CIE-LCH	lch(42.52, 51.93, 286.76°)
OKLab	oklab(50.95% -0.0164 -0.1424)
OKLCH	oklch(50.95% 0.143 263.4)
XYZ	xyz(14.5063, 12.8367, 46.5038)
Luminance	0.1284 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3961B7 #B78F39

analogous

#39A0B7 #3961B7 #5039B7

triadic

#3961B7 #B73961 #61B739

tetradic

#3961B7 #B739A0 #B78F39 #39B750

square

#3961B7 #B739A0 #B78F39 #39B750

split-complementary

#3961B7 #B75039 #A0B739

monochromatic

#1C305A #2A4888 #3961B7 #6083CD #8EA7DC

Accessibility & contrast

On white

5.89

#3961B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.57

#3961B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3961B7

5.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3961B7	#FFFFFF	#000000	##FFFFFF
##3961B7	1.00	5.89	3.57	5.89
#FFFFFF	5.89	1.00	21.00	1.00
#000000	3.57	21.00	1.00	21.00
##FFFFFF	5.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#356BBA

Deuteranopia (green-blind)

#195FB5

Tritanopia (blue-blind)

#007583

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #3961b7;
/* rgb */ color: rgb(57, 97, 183);
/* oklch */ color: oklch(51.0% 0.143 263.4);

Tailwind

colors: {
  custom: {
    50: '#7e8dcd',
    500: '#3961b7',
    950: '#000000',
  },
}

SCSS

$custom: #3961b7;
$custom-light: #7e8dcd;
$custom-dark: #000000;

JSON

{
  "hex": "#3961b7",
  "rgb": {
    "r": 57,
    "g": 97,
    "b": 183
  },
  "hsl": {
    "h": 220.952,
    "s": 52.5,
    "l": 47.059
  },
  "oklch": {
    "l": 0.50953,
    "c": 0.14336,
    "h": 263.4
  },
  "luminance": 0.12838
}

Semantic roles & 50–950 ramp

primary

#3961B7

secondary

#C7B285

accent

#AE4CDC

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #3961B7

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

Preview Lab → · Contrast checker → · Palette generator →