#3F5FC3#3F5FC3

#3F5FC3 is a mid, vivid blue. Relative luminance 0.132; OKLCH L 51.7% C 0.161 H 267.2°. Best body text is #FFFFFF at 5.78:1 contrast (WCAG AA passes).

Color values

HEX	#3F5FC3
RGB	rgb(63, 95, 195)
HSL	hsl(225, 52%, 51%)
HSV	hsv(225, 68%, 76%)
CMYK	cmyk(67.7%, 51.3%, 0%, 23.5%)
CIE-LAB	lab(43.03, 21.56, -55.86)
CIE-LCH	lch(43.03, 59.88, 291.11°)
OKLab	oklab(51.68% -0.0078 -0.1604)
OKLCH	oklch(51.68% 0.161 267.2)
XYZ	xyz(15.9890, 13.1798, 53.3205)
Luminance	0.1318 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5FC3 #C3A33F

analogous

#3FA1C3 #3F5FC3 #613FC3

triadic

#3F5FC3 #C33F5F #5FC33F

tetradic

#3F5FC3 #C33FA1 #C3A33F #3FC361

square

#3F5FC3 #C33FA1 #C3A33F #3FC361

split-complementary

#3F5FC3 #C3613F #A1C33F

monochromatic

#203267 #2F4896 #3F5FC3 #6E86D2 #9CADE0

Accessibility & contrast

On white

5.78

#3F5FC3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.64

#3F5FC3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5FC3

5.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5FC3	#FFFFFF	#000000	##FFFFFF
##3F5FC3	1.00	5.78	3.64	5.78
#FFFFFF	5.78	1.00	21.00	1.00
#000000	3.64	21.00	1.00	21.00
##FFFFFF	5.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#226CC7

Deuteranopia (green-blind)

#0060C1

Tritanopia (blue-blind)

#007788

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3f5fc3;
/* rgb */ color: rgb(63, 95, 195);
/* oklch */ color: oklch(51.7% 0.161 267.2);

Tailwind

colors: {
  custom: {
    50: '#838bd6',
    500: '#3f5fc3',
    950: '#000000',
  },
}

SCSS

$custom: #3f5fc3;
$custom-light: #838bd6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5fc3",
  "rgb": {
    "r": 63,
    "g": 95,
    "b": 195
  },
  "hsl": {
    "h": 225.455,
    "s": 52.381,
    "l": 50.588
  },
  "oklch": {
    "l": 0.51675,
    "c": 0.16058,
    "h": 267.2
  },
  "luminance": 0.13181
}

Semantic roles & 50–950 ramp

primary

#3F5FC3

secondary

#CCBE92

accent

#B94CDC

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0C0C14

muted

#7D7D83

Preview Lab

Preview with #3F5FC3

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

Preview Lab → · Contrast checker → · Palette generator →