#3F5FBE#3F5FBE

#3F5FBE is a mid, vivid blue. Relative luminance 0.130; OKLCH L 51.3% C 0.154 H 266.9°. Best body text is #FFFFFF at 5.85:1 contrast (WCAG AA passes).

Color values

HEX	#3F5FBE
RGB	rgb(63, 95, 190)
HSL	hsl(225, 50%, 50%)
HSV	hsv(225, 67%, 75%)
CMYK	cmyk(66.8%, 50%, 0%, 25.5%)
CIE-LAB	lab(42.70, 19.77, -53.50)
CIE-LCH	lch(42.70, 57.03, 290.28°)
OKLab	oklab(51.32% -0.0083 -0.1534)
OKLCH	oklch(51.32% 0.154 266.9)
XYZ	xyz(15.4332, 12.9574, 50.3929)
Luminance	0.1296 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5FBE #BE9E3F

analogous

#3F9FBE #3F5FBE #5F3FBE

triadic

#3F5FBE #BE3F5F #5FBE3F

tetradic

#3F5FBE #BE3F9F #BE9E3F #3FBE5F

square

#3F5FBE #BE3F9F #BE9E3F #3FBE5F

split-complementary

#3F5FBE #BE5F3F #9FBE3F

monochromatic

#213162 #304890 #3F5FBE #6C85CE #9AABDD

Accessibility & contrast

On white

5.85

#3F5FBE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#3F5FBE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5FBE

5.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5FBE	#FFFFFF	#000000	##FFFFFF
##3F5FBE	1.00	5.85	3.59	5.85
#FFFFFF	5.85	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#296BC1

Deuteranopia (green-blind)

#005FBC

Tritanopia (blue-blind)

#007585

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3f5fbe;
/* rgb */ color: rgb(63, 95, 190);
/* oklch */ color: oklch(51.3% 0.154 266.9);

Tailwind

colors: {
  custom: {
    50: '#828bd2',
    500: '#3f5fbe',
    950: '#000000',
  },
}

SCSS

$custom: #3f5fbe;
$custom-light: #828bd2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5fbe",
  "rgb": {
    "r": 63,
    "g": 95,
    "b": 190
  },
  "hsl": {
    "h": 224.882,
    "s": 50.198,
    "l": 49.608
  },
  "oklch": {
    "l": 0.51315,
    "c": 0.15365,
    "h": 266.9
  },
  "luminance": 0.12959
}

Semantic roles & 50–950 ramp

primary

#3F5FBE

secondary

#C9BB8F

accent

#B74EDA

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0C0C14

muted

#7D7D83

Preview Lab

Preview with #3F5FBE

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

Preview Lab → · Contrast checker → · Palette generator →