#3F41C1#3F41C1

#3F41C1 is a mid, vivid blue. Relative luminance 0.087; OKLCH L 45.9% C 0.195 H 274.9°. Best body text is #FFFFFF at 7.67:1 contrast (WCAG AA passes).

Color values

HEX	#3F41C1
RGB	rgb(63, 65, 193)
HSL	hsl(239, 51%, 50%)
HSV	hsv(239, 67%, 76%)
CMYK	cmyk(67.4%, 66.3%, 0%, 24.3%)
CIE-LAB	lab(35.37, 39.84, -67.16)
CIE-LCH	lch(35.37, 78.09, 300.68°)
OKLab	oklab(45.93% 0.0167 -0.1939)
OKLCH	oklch(45.93% 0.195 274.9)
XYZ	xyz(13.5627, 8.6864, 51.4036)
Luminance	0.0869 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F41C1 #C1BF3F

analogous

#3F82C1 #3F41C1 #7E3FC1

triadic

#3F41C1 #C13F41 #41C13F

tetradic

#3F41C1 #C13F82 #C1BF3F #3FC17E

square

#3F41C1 #C13F82 #C1BF3F #3FC17E

split-complementary

#3F41C1 #C17E3F #82C13F

monochromatic

#212265 #303193 #3F41C1 #6D6FD0 #9C9DDF

Accessibility & contrast

On white

7.67

#3F41C1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.74

#3F41C1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F41C1

7.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F41C1	#FFFFFF	#000000	##FFFFFF
##3F41C1	1.00	7.67	2.74	7.67
#FFFFFF	7.67	1.00	21.00	1.00
#000000	2.74	21.00	1.00	21.00
##FFFFFF	7.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059C5

Deuteranopia (green-blind)

#004DBF

Tritanopia (blue-blind)

#00637B

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #3f41c1;
/* rgb */ color: rgb(63, 65, 193);
/* oklch */ color: oklch(45.9% 0.195 274.9);

Tailwind

colors: {
  custom: {
    50: '#8476d5',
    500: '#3f41c1',
    950: '#000000',
  },
}

SCSS

$custom: #3f41c1;
$custom-light: #8476d5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f41c1",
  "rgb": {
    "r": 63,
    "g": 65,
    "b": 193
  },
  "hsl": {
    "h": 239.077,
    "s": 51.181,
    "l": 50.196
  },
  "oklch": {
    "l": 0.45933,
    "c": 0.1946,
    "h": 274.9
  },
  "luminance": 0.08688
}

Semantic roles & 50–950 ramp

primary

#3F41C1

secondary

#CBCA91

accent

#D84DDB

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3F41C1

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

Preview Lab → · Contrast checker → · Palette generator →