#3961B8#3961B8

#3961B8 is a mid, vivid blue. Relative luminance 0.129; OKLCH L 51.0% C 0.145 H 263.5°. Best body text is #FFFFFF at 5.87:1 contrast (WCAG AA passes).

Color values

HEX	#3961B8
RGB	rgb(57, 97, 184)
HSL	hsl(221, 53%, 47%)
HSV	hsv(221, 69%, 72%)
CMYK	cmyk(69%, 47.3%, 0%, 27.8%)
CIE-LAB	lab(42.58, 15.35, -50.21)
CIE-LCH	lch(42.58, 52.50, 286.99°)
OKLab	oklab(51.02% -0.0163 -0.1438)
OKLCH	oklch(51.02% 0.145 263.5)
XYZ	xyz(14.6107, 12.8785, 47.0539)
Luminance	0.1288 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3961B8 #B89039

analogous

#39A1B8 #3961B8 #5039B8

triadic

#3961B8 #B83961 #61B839

tetradic

#3961B8 #B839A1 #B89039 #39B850

square

#3961B8 #B839A1 #B89039 #39B850

split-complementary

#3961B8 #B85039 #A1B839

monochromatic

#1C305B #2B4889 #3961B8 #6083CE #8FA7DC

Accessibility & contrast

On white

5.87

#3961B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.58

#3961B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3961B8

5.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3961B8	#FFFFFF	#000000	##FFFFFF
##3961B8	1.00	5.87	3.58	5.87
#FFFFFF	5.87	1.00	21.00	1.00
#000000	3.58	21.00	1.00	21.00
##FFFFFF	5.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#346BBB

Deuteranopia (green-blind)

#175FB6

Tritanopia (blue-blind)

#007583

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3961b8;
/* rgb */ color: rgb(57, 97, 184);
/* oklch */ color: oklch(51.0% 0.145 263.5);

Tailwind

colors: {
  custom: {
    50: '#7e8dce',
    500: '#3961b8',
    950: '#000000',
  },
}

SCSS

$custom: #3961b8;
$custom-light: #7e8dce;
$custom-dark: #000000;

JSON

{
  "hex": "#3961b8",
  "rgb": {
    "r": 57,
    "g": 97,
    "b": 184
  },
  "hsl": {
    "h": 221.102,
    "s": 52.697,
    "l": 47.255
  },
  "oklch": {
    "l": 0.51022,
    "c": 0.14476,
    "h": 263.5
  },
  "luminance": 0.1288
}

Semantic roles & 50–950 ramp

primary

#3961B8

secondary

#C7B286

accent

#AF4CDC

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3961B8

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

Preview Lab → · Contrast checker → · Palette generator →