#3F69CB#3F69CB

#3F69CB is a mid, vivid blue. Relative luminance 0.155; OKLCH L 54.3% C 0.159 H 264.3°. Best body text is #FFFFFF at 5.13:1 contrast (WCAG AA passes).

Color values

HEX	#3F69CB
RGB	rgb(63, 105, 203)
HSL	hsl(222, 57%, 52%)
HSV	hsv(222, 69%, 80%)
CMYK	cmyk(69%, 48.3%, 0%, 20.4%)
CIE-LAB	lab(46.27, 18.07, -55.26)
CIE-LCH	lch(46.27, 58.13, 288.11°)
OKLab	oklab(54.31% -0.0158 -0.1584)
OKLCH	oklch(54.31% 0.159 264.3)
XYZ	xyz(17.8772, 15.4699, 58.5322)
Luminance	0.1547 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F69CB #CBA13F

analogous

#3FAFCB #3F69CB #5B3FCB

triadic

#3F69CB #CB3F69 #69CB3F

tetradic

#3F69CB #CB3FAF #CBA13F #3FCB5B

square

#3F69CB #CB3FAF #CBA13F #3FCB5B

split-complementary

#3F69CB #CB5B3F #AFCB3F

monochromatic

#1F3771 #2C4FA1 #3F69CB #6F8FD8 #9FB4E5

Accessibility & contrast

On white

5.13

#3F69CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.09

#3F69CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F69CB

5.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F69CB	#FFFFFF	#000000	##FFFFFF
##3F69CB	1.00	5.13	4.09	5.13
#FFFFFF	5.13	1.00	21.00	1.00
#000000	4.09	21.00	1.00	21.00
##FFFFFF	5.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3474CF

Deuteranopia (green-blind)

#0C68C9

Tritanopia (blue-blind)

#008090

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #3f69cb;
/* rgb */ color: rgb(63, 105, 203);
/* oklch */ color: oklch(54.3% 0.159 264.3);

Tailwind

colors: {
  custom: {
    50: '#8493db',
    500: '#3f69cb',
    950: '#000000',
  },
}

SCSS

$custom: #3f69cb;
$custom-light: #8493db;
$custom-dark: #000000;

JSON

{
  "hex": "#3f69cb",
  "rgb": {
    "r": 63,
    "g": 105,
    "b": 203
  },
  "hsl": {
    "h": 222,
    "s": 57.377,
    "l": 52.157
  },
  "oklch": {
    "l": 0.54308,
    "c": 0.15924,
    "h": 264.3
  },
  "luminance": 0.15472
}

Semantic roles & 50–950 ramp

primary

#3F69CB

secondary

#D1BF94

accent

#B347E1

background

#F8F9FD

surface

#F0F1FB

border

#CBCBD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F69CB

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

Preview Lab → · Contrast checker → · Palette generator →