#3F5BBE#3F5BBE

#3F5BBE is a mid, vivid blue. Relative luminance 0.123; OKLCH L 50.5% C 0.159 H 268.3°. Best body text is #FFFFFF at 6.08:1 contrast (WCAG AA passes).

Color values

HEX	#3F5BBE
RGB	rgb(63, 91, 190)
HSL	hsl(227, 50%, 50%)
HSV	hsv(227, 67%, 75%)
CMYK	cmyk(66.8%, 52.1%, 0%, 25.5%)
CIE-LAB	lab(41.62, 22.34, -55.24)
CIE-LCH	lch(41.62, 59.59, 292.02°)
OKLab	oklab(50.5% -0.0046 -0.1586)
OKLCH	oklch(50.5% 0.159 268.3)
XYZ	xyz(15.0821, 12.2552, 50.2759)
Luminance	0.1226 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5BBE #BEA23F

analogous

#3F9ABE #3F5BBE #633FBE

triadic

#3F5BBE #BE3F5B #5BBE3F

tetradic

#3F5BBE #BE3F9A #BEA23F #3FBE63

square

#3F5BBE #BE3F9A #BEA23F #3FBE63

split-complementary

#3F5BBE #BE633F #9ABE3F

monochromatic

#212F62 #304590 #3F5BBE #6C82CE #9AA9DD

Accessibility & contrast

On white

6.08

#3F5BBE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.45

#3F5BBE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5BBE

6.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5BBE	#FFFFFF	#000000	##FFFFFF
##3F5BBE	1.00	6.08	3.45	6.08
#FFFFFF	6.08	1.00	21.00	1.00
#000000	3.45	21.00	1.00	21.00
##FFFFFF	6.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D68C2

Deuteranopia (green-blind)

#005DBC

Tritanopia (blue-blind)

#007284

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #3f5bbe;
/* rgb */ color: rgb(63, 91, 190);
/* oklch */ color: oklch(50.5% 0.159 268.3);

Tailwind

colors: {
  custom: {
    50: '#8289d2',
    500: '#3f5bbe',
    950: '#000000',
  },
}

SCSS

$custom: #3f5bbe;
$custom-light: #8289d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5bbe",
  "rgb": {
    "r": 63,
    "g": 91,
    "b": 190
  },
  "hsl": {
    "h": 226.772,
    "s": 50.198,
    "l": 49.608
  },
  "oklch": {
    "l": 0.50495,
    "c": 0.15869,
    "h": 268.3
  },
  "luminance": 0.12257
}

Semantic roles & 50–950 ramp

primary

#3F5BBE

secondary

#C9BD8F

accent

#BB4EDA

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0B14

muted

#7D7C83

Preview Lab

Preview with #3F5BBE

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

Preview Lab → · Contrast checker → · Palette generator →