#3969CF#3969CF

#3969CF is a mid, vivid blue. Relative luminance 0.155; OKLCH L 54.3% C 0.167 H 263.1°. Best body text is #FFFFFF at 5.13:1 contrast (WCAG AA passes).

Color values

HEX	#3969CF
RGB	rgb(57, 105, 207)
HSL	hsl(221, 61%, 52%)
HSV	hsv(221, 72%, 81%)
CMYK	cmyk(72.5%, 49.3%, 0%, 18.8%)
CIE-LAB	lab(46.28, 18.67, -57.55)
CIE-LCH	lch(46.28, 60.50, 287.98°)
OKLab	oklab(54.33% -0.0201 -0.1653)
OKLCH	oklch(54.33% 0.167 263.1)
XYZ	xyz(17.9974, 15.4761, 61.0581)
Luminance	0.1548 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3969CF #CF9F39

analogous

#39B4CF #3969CF #5439CF

triadic

#3969CF #CF3969 #69CF39

tetradic

#3969CF #CF39B4 #CF9F39 #39CF54

square

#3969CF #CF39B4 #CF9F39 #39CF54

split-complementary

#3969CF #CF5439 #B4CF39

monochromatic

#1C3772 #284FA3 #3969CF #6A8EDB #9CB4E7

Accessibility & contrast

On white

5.13

#3969CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.10

#3969CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3969CF

5.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3969CF	#FFFFFF	#000000	##FFFFFF
##3969CF	1.00	5.13	4.10	5.13
#FFFFFF	5.13	1.00	21.00	1.00
#000000	4.10	21.00	1.00	21.00
##FFFFFF	5.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E75D3

Deuteranopia (green-blind)

#0067CD

Tritanopia (blue-blind)

#008192

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #3969cf;
/* rgb */ color: rgb(57, 105, 207);
/* oklch */ color: oklch(54.3% 0.167 263.1);

Tailwind

colors: {
  custom: {
    50: '#8293de',
    500: '#3969cf',
    950: '#000000',
  },
}

SCSS

$custom: #3969cf;
$custom-light: #8293de;
$custom-dark: #000000;

JSON

{
  "hex": "#3969cf",
  "rgb": {
    "r": 57,
    "g": 105,
    "b": 207
  },
  "hsl": {
    "h": 220.8,
    "s": 60.976,
    "l": 51.765
  },
  "oklch": {
    "l": 0.54328,
    "c": 0.16652,
    "h": 263.1
  },
  "luminance": 0.15478
}

Semantic roles & 50–950 ramp

primary

#3969CF

secondary

#D3BE91

accent

#B144E4

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0D15

muted

#7D7D83

Preview Lab

Preview with #3969CF

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

Preview Lab → · Contrast checker → · Palette generator →