#3F49CF#3F49CF

#3F49CF is a mid, highly saturated blue. Relative luminance 0.103; OKLCH L 48.5% C 0.203 H 272.8°. Best body text is #FFFFFF at 6.85:1 contrast (WCAG AA passes).

Color values

HEX	#3F49CF
RGB	rgb(63, 73, 207)
HSL	hsl(236, 60%, 53%)
HSV	hsv(236, 70%, 81%)
CMYK	cmyk(69.6%, 64.7%, 0%, 18.8%)
CIE-LAB	lab(38.42, 39.72, -70.31)
CIE-LCH	lch(38.42, 80.75, 299.46°)
OKLab	oklab(48.53% 0.0099 -0.2031)
OKLCH	oklch(48.53% 0.203 272.8)
XYZ	xyz(15.6911, 10.3253, 60.1854)
Luminance	0.1033 (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

#3F49CF #CFC53F

analogous

#3F91CF #3F49CF #7D3FCF

triadic

#3F49CF #CF3F49 #49CF3F

tetradic

#3F49CF #CF3F91 #CFC53F #3FCF7D

square

#3F49CF #CF3F91 #CFC53F #3FCF7D

split-complementary

#3F49CF #CF7D3F #91CF3F

monochromatic

#1E2476 #2A32A7 #3F49CF #7077DB #A1A6E7

Accessibility & contrast

On white

6.85

#3F49CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#3F49CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F49CF

6.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F49CF	#FFFFFF	#000000	##FFFFFF
##3F49CF	1.00	6.85	3.07	6.85
#FFFFFF	6.85	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061D3

Deuteranopia (green-blind)

#0054CC

Tritanopia (blue-blind)

#006C85

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #3f49cf;
/* rgb */ color: rgb(63, 73, 207);
/* oklch */ color: oklch(48.5% 0.203 272.8);

Tailwind

colors: {
  custom: {
    50: '#877cdf',
    500: '#3f49cf',
    950: '#000000',
  },
}

SCSS

$custom: #3f49cf;
$custom-light: #877cdf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f49cf",
  "rgb": {
    "r": 63,
    "g": 73,
    "b": 207
  },
  "hsl": {
    "h": 235.833,
    "s": 60,
    "l": 52.941
  },
  "oklch": {
    "l": 0.48525,
    "c": 0.20332,
    "h": 272.8
  },
  "luminance": 0.10327
}

Semantic roles & 50–950 ramp

primary

#3F49CF

secondary

#D4D096

accent

#D845E3

background

#F9F7FD

surface

#F1EEFB

border

#CBC9D4

text

#0D0915

muted

#7E7B83

Preview Lab

Preview with #3F49CF

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

Preview Lab → · Contrast checker → · Palette generator →