#3F49E0#3F49E0

#3F49E0 is a mid, highly saturated blue. Relative luminance 0.112; OKLCH L 50.1% C 0.225 H 272.1°. Best body text is #FFFFFF at 6.48:1 contrast (WCAG AA passes).

Color values

HEX	#3F49E0
RGB	rgb(63, 73, 224)
HSL	hsl(236, 72%, 56%)
HSV	hsv(236, 72%, 88%)
CMYK	cmyk(71.9%, 67.4%, 0%, 12.2%)
CIE-LAB	lab(39.92, 45.48, -77.61)
CIE-LCH	lch(39.92, 89.95, 300.37°)
OKLab	oklab(50.07% 0.0084 -0.2244)
OKLCH	oklch(50.07% 0.225 272.1)
XYZ	xyz(17.8825, 11.2018, 71.7263)
Luminance	0.1120 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F49E0 #E0D63F

analogous

#3F9AE0 #3F49E0 #863FE0

triadic

#3F49E0 #E03F49 #49E03F

tetradic

#3F49E0 #E03F9A #E0D63F #3FE086

square

#3F49E0 #E03F9A #E0D63F #3FE086

split-complementary

#3F49E0 #E0863F #9AE03F

monochromatic

#171E8E #1F2AC2 #3F49E0 #747BE9 #A8ADF1

Accessibility & contrast

On white

6.48

#3F49E0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.24

#3F49E0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F49E0

6.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F49E0	#FFFFFF	#000000	##FFFFFF
##3F49E0	1.00	6.48	3.24	6.48
#FFFFFF	6.48	1.00	21.00	1.00
#000000	3.24	21.00	1.00	21.00
##FFFFFF	6.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066E5

Deuteranopia (green-blind)

#0056DD

Tritanopia (blue-blind)

#00728F

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #3f49e0;
/* rgb */ color: rgb(63, 73, 224);
/* oklch */ color: oklch(50.1% 0.225 272.1);

Tailwind

colors: {
  custom: {
    50: '#8a7ceb',
    500: '#3f49e0',
    950: '#000000',
  },
}

SCSS

$custom: #3f49e0;
$custom-light: #8a7ceb;
$custom-dark: #000000;

JSON

{
  "hex": "#3f49e0",
  "rgb": {
    "r": 63,
    "g": 73,
    "b": 224
  },
  "hsl": {
    "h": 236.273,
    "s": 72.197,
    "l": 56.275
  },
  "oklch": {
    "l": 0.50073,
    "c": 0.2246,
    "h": 272.1
  },
  "luminance": 0.11204
}

Semantic roles & 50–950 ramp

primary

#3F49E0

secondary

#DFDA9C

accent

#E439EF

background

#F9F7FE

surface

#F2EEFD

border

#CCC9D5

text

#0E0916

muted

#7E7B84

Preview Lab

Preview with #3F49E0

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

Preview Lab → · Contrast checker → · Palette generator →