#3F529C#3F529C

#3F529C is a mid, vivid blue. Relative luminance 0.095; OKLCH L 46.2% C 0.122 H 270.2°. Best body text is #FFFFFF at 7.25:1 contrast (WCAG AA passes).

Color values

HEX	#3F529C
RGB	rgb(63, 82, 156)
HSL	hsl(228, 42%, 43%)
HSV	hsv(228, 60%, 61%)
CMYK	cmyk(59.6%, 47.4%, 0%, 38.8%)
CIE-LAB	lab(36.91, 16.08, -42.70)
CIE-LCH	lch(36.91, 45.62, 290.63°)
OKLab	oklab(46.2% 0.0005 -0.1218)
OKLCH	oklch(46.2% 0.122 270.2)
XYZ	xyz(11.0659, 9.4908, 32.6948)
Luminance	0.0949 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F529C #9C893F

analogous

#3F809C #3F529C #5A3F9C

triadic

#3F529C #9C3F52 #529C3F

tetradic

#3F529C #9C3F80 #9C893F #3F9C5A

square

#3F529C #9C3F80 #9C893F #3F9C5A

split-complementary

#3F529C #9C5A3F #809C3F

monochromatic

#1C2445 #2D3B70 #3F529C #5B6FBD #8796CE

Accessibility & contrast

On white

7.25

#3F529C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#3F529C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F529C

7.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F529C	#FFFFFF	#000000	##FFFFFF
##3F529C	1.00	7.25	2.90	7.25
#FFFFFF	7.25	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F5B9F

Deuteranopia (green-blind)

#21539A

Tritanopia (blue-blind)

#00636F

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #3f529c;
/* rgb */ color: rgb(63, 82, 156);
/* oklch */ color: oklch(46.2% 0.122 270.2);

Tailwind

colors: {
  custom: {
    50: '#7c82ba',
    500: '#3f529c',
    950: '#000000',
  },
}

SCSS

$custom: #3f529c;
$custom-light: #7c82ba;
$custom-dark: #000000;

JSON

{
  "hex": "#3f529c",
  "rgb": {
    "r": 63,
    "g": 82,
    "b": 156
  },
  "hsl": {
    "h": 227.742,
    "s": 42.466,
    "l": 42.941
  },
  "oklch": {
    "l": 0.46204,
    "c": 0.12185,
    "h": 270.2
  },
  "luminance": 0.09492
}

Semantic roles & 50–950 ramp

primary

#3F529C

secondary

#B9AD7E

accent

#B956D2

background

#F7F7FB

surface

#EEEEF6

border

#C9C9D0

text

#0A0A11

muted

#7C7C80

Preview Lab

Preview with #3F529C

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

Preview Lab → · Contrast checker → · Palette generator →