#3F47D0#3F47D0

#3F47D0 is a mid, highly saturated blue. Relative luminance 0.101; OKLCH L 48.3% C 0.207 H 273.1°. Best body text is #FFFFFF at 6.95:1 contrast (WCAG AA passes).

Color values

HEX	#3F47D0
RGB	rgb(63, 71, 208)
HSL	hsl(237, 61%, 53%)
HSV	hsv(237, 70%, 82%)
CMYK	cmyk(69.7%, 65.9%, 0%, 18.4%)
CIE-LAB	lab(38.05, 41.28, -71.49)
CIE-LCH	lch(38.05, 82.56, 300.00°)
OKLab	oklab(48.28% 0.0111 -0.2066)
OKLCH	oklch(48.28% 0.207 273.1)
XYZ	xyz(15.6845, 10.1158, 60.7882)
Luminance	0.1012 (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

#3F47D0 #D0C83F

analogous

#3F8FD0 #3F47D0 #803FD0

triadic

#3F47D0 #D03F47 #47D03F

tetradic

#3F47D0 #D03F8F #D0C83F #3FD080

square

#3F47D0 #D03F8F #D0C83F #3FD080

split-complementary

#3F47D0 #D0803F #8FD03F

monochromatic

#1D2277 #2930A9 #3F47D0 #7076DC #A1A5E8

Accessibility & contrast

On white

6.95

#3F47D0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.02

#3F47D0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F47D0

6.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F47D0	#FFFFFF	#000000	##FFFFFF
##3F47D0	1.00	6.95	3.02	6.95
#FFFFFF	6.95	1.00	21.00	1.00
#000000	3.02	21.00	1.00	21.00
##FFFFFF	6.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060D4

Deuteranopia (green-blind)

#0053CD

Tritanopia (blue-blind)

#006B85

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #3f47d0;
/* rgb */ color: rgb(63, 71, 208);
/* oklch */ color: oklch(48.3% 0.207 273.1);

Tailwind

colors: {
  custom: {
    50: '#877ae0',
    500: '#3f47d0',
    950: '#000000',
  },
}

SCSS

$custom: #3f47d0;
$custom-light: #877ae0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f47d0",
  "rgb": {
    "r": 63,
    "g": 71,
    "b": 208
  },
  "hsl": {
    "h": 236.69,
    "s": 60.669,
    "l": 53.137
  },
  "oklch": {
    "l": 0.48282,
    "c": 0.20686,
    "h": 273.1
  },
  "luminance": 0.10117
}

Semantic roles & 50–950 ramp

primary

#3F47D0

secondary

#D5D196

accent

#DB44E4

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0915

muted

#7E7B83

Preview Lab

Preview with #3F47D0

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

Preview Lab → · Contrast checker → · Palette generator →