#3F5FC7#3F5FC7

#3F5FC7 is a mid, vivid blue. Relative luminance 0.134; OKLCH L 52.0% C 0.166 H 267.4°. Best body text is #FFFFFF at 5.72:1 contrast (WCAG AA passes).

Color values

HEX	#3F5FC7
RGB	rgb(63, 95, 199)
HSL	hsl(226, 55%, 51%)
HSV	hsv(226, 68%, 78%)
CMYK	cmyk(68.3%, 52.3%, 0%, 22%)
CIE-LAB	lab(43.31, 23.00, -57.74)
CIE-LCH	lch(43.31, 62.15, 291.72°)
OKLab	oklab(51.97% -0.0074 -0.1659)
OKLCH	oklch(51.97% 0.166 267.4)
XYZ	xyz(16.4473, 13.3631, 55.7343)
Luminance	0.1336 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5FC7 #C7A73F

analogous

#3FA3C7 #3F5FC7 #633FC7

triadic

#3F5FC7 #C73F5F #5FC73F

tetradic

#3F5FC7 #C73FA3 #C7A73F #3FC763

square

#3F5FC7 #C73FA3 #C7A73F #3FC763

split-complementary

#3F5FC7 #C7633F #A3C73F

monochromatic

#20326C #2D479B #3F5FC7 #6E86D5 #9EAEE3

Accessibility & contrast

On white

5.72

#3F5FC7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.67

#3F5FC7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5FC7

5.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5FC7	#FFFFFF	#000000	##FFFFFF
##3F5FC7	1.00	5.72	3.67	5.72
#FFFFFF	5.72	1.00	21.00	1.00
#000000	3.67	21.00	1.00	21.00
##FFFFFF	5.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B6DCB

Deuteranopia (green-blind)

#0060C5

Tritanopia (blue-blind)

#00788A

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3f5fc7;
/* rgb */ color: rgb(63, 95, 199);
/* oklch */ color: oklch(52.0% 0.166 267.4);

Tailwind

colors: {
  custom: {
    50: '#848bd9',
    500: '#3f5fc7',
    950: '#000000',
  },
}

SCSS

$custom: #3f5fc7;
$custom-light: #848bd9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5fc7",
  "rgb": {
    "r": 63,
    "g": 95,
    "b": 199
  },
  "hsl": {
    "h": 225.882,
    "s": 54.839,
    "l": 51.373
  },
  "oklch": {
    "l": 0.51968,
    "c": 0.16606,
    "h": 267.4
  },
  "luminance": 0.13365
}

Semantic roles & 50–950 ramp

primary

#3F5FC7

secondary

#CFC193

accent

#BB4ADE

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3F5FC7

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

Preview Lab → · Contrast checker → · Palette generator →