#3F5FBF#3F5FBF

#3F5FBF is a mid, vivid blue. Relative luminance 0.130; OKLCH L 51.4% C 0.155 H 267.0°. Best body text is #FFFFFF at 5.83:1 contrast (WCAG AA passes).

Color values

HEX	#3F5FBF
RGB	rgb(63, 95, 191)
HSL	hsl(225, 50%, 50%)
HSV	hsv(225, 67%, 75%)
CMYK	cmyk(67%, 50.3%, 0%, 25.1%)
CIE-LAB	lab(42.77, 20.12, -53.97)
CIE-LCH	lch(42.77, 57.60, 290.45°)
OKLab	oklab(51.39% -0.0082 -0.1548)
OKLCH	oklch(51.39% 0.155 267)
XYZ	xyz(15.5428, 13.0013, 50.9705)
Luminance	0.1300 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5FBF #BF9F3F

analogous

#3F9FBF #3F5FBF #5F3FBF

triadic

#3F5FBF #BF3F5F #5FBF3F

tetradic

#3F5FBF #BF3F9F #BF9F3F #3FBF5F

square

#3F5FBF #BF3F9F #BF9F3F #3FBF5F

split-complementary

#3F5FBF #BF5F3F #9FBF3F

monochromatic

#213163 #304891 #3F5FBF #6D85CF #9BABDE

Accessibility & contrast

On white

5.83

#3F5FBF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.60

#3F5FBF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5FBF

5.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5FBF	#FFFFFF	#000000	##FFFFFF
##3F5FBF	1.00	5.83	3.60	5.83
#FFFFFF	5.83	1.00	21.00	1.00
#000000	3.60	21.00	1.00	21.00
##FFFFFF	5.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#286BC2

Deuteranopia (green-blind)

#005FBD

Tritanopia (blue-blind)

#007586

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3f5fbf;
/* rgb */ color: rgb(63, 95, 191);
/* oklch */ color: oklch(51.4% 0.155 267.0);

Tailwind

colors: {
  custom: {
    50: '#828bd3',
    500: '#3f5fbf',
    950: '#000000',
  },
}

SCSS

$custom: #3f5fbf;
$custom-light: #828bd3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5fbf",
  "rgb": {
    "r": 63,
    "g": 95,
    "b": 191
  },
  "hsl": {
    "h": 225,
    "s": 50.394,
    "l": 49.804
  },
  "oklch": {
    "l": 0.51386,
    "c": 0.15505,
    "h": 267
  },
  "luminance": 0.13003
}

Semantic roles & 50–950 ramp

primary

#3F5FBF

secondary

#CABB90

accent

#B74EDA

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0C0C14

muted

#7D7D83

Preview Lab

Preview with #3F5FBF

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

Preview Lab → · Contrast checker → · Palette generator →