#3F45D3#3F45D3

#3F45D3 is a mid, highly saturated blue. Relative luminance 0.100; OKLCH L 48.2% C 0.213 H 273.3°. Best body text is #FFFFFF at 6.99:1 contrast (WCAG AA passes).

Color values

HEX	#3F45D3
RGB	rgb(63, 69, 211)
HSL	hsl(238, 63%, 54%)
HSV	hsv(238, 70%, 83%)
CMYK	cmyk(70.1%, 67.3%, 0%, 17.3%)
CIE-LAB	lab(37.87, 43.49, -73.52)
CIE-LCH	lch(37.87, 85.42, 300.61°)
OKLab	oklab(48.23% 0.0121 -0.2125)
OKLCH	oklch(48.23% 0.213 273.3)
XYZ	xyz(15.9320, 10.0146, 62.7088)
Luminance	0.1002 (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

#3F45D3 #D3CD3F

analogous

#3F8FD3 #3F45D3 #833FD3

triadic

#3F45D3 #D33F45 #45D33F

tetradic

#3F45D3 #D33F8F #D3CD3F #3FD383

square

#3F45D3 #D33F8F #D3CD3F #3FD383

split-complementary

#3F45D3 #D3833F #8FD33F

monochromatic

#1C207B #282DAD #3F45D3 #7175DE #A3A5EA

Accessibility & contrast

On white

6.99

#3F45D3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.00

#3F45D3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F45D3

6.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F45D3	#FFFFFF	#000000	##FFFFFF
##3F45D3	1.00	6.99	3.00	6.99
#FFFFFF	6.99	1.00	21.00	1.00
#000000	3.00	21.00	1.00	21.00
##FFFFFF	6.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060D7

Deuteranopia (green-blind)

#0052D0

Tritanopia (blue-blind)

#006B86

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3f45d3;
/* rgb */ color: rgb(63, 69, 211);
/* oklch */ color: oklch(48.2% 0.213 273.3);

Tailwind

colors: {
  custom: {
    50: '#8879e2',
    500: '#3f45d3',
    950: '#000000',
  },
}

SCSS

$custom: #3f45d3;
$custom-light: #8879e2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f45d3",
  "rgb": {
    "r": 63,
    "g": 69,
    "b": 211
  },
  "hsl": {
    "h": 237.568,
    "s": 62.712,
    "l": 53.725
  },
  "oklch": {
    "l": 0.48232,
    "c": 0.21285,
    "h": 273.3
  },
  "luminance": 0.10016
}

Semantic roles & 50–950 ramp

primary

#3F45D3

secondary

#D7D497

accent

#DF42E6

background

#F9F7FE

surface

#F1EDFC

border

#CBC8D5

text

#0D0915

muted

#7E7B84

Preview Lab

Preview with #3F45D3

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

Preview Lab → · Contrast checker → · Palette generator →