#3F45D2#3F45D2

#3F45D2 is a mid, highly saturated blue. Relative luminance 0.100; OKLCH L 48.1% C 0.212 H 273.3°. Best body text is #FFFFFF at 7.02:1 contrast (WCAG AA passes).

Color values

HEX	#3F45D2
RGB	rgb(63, 69, 210)
HSL	hsl(238, 62%, 54%)
HSV	hsv(238, 70%, 82%)
CMYK	cmyk(70%, 67.1%, 0%, 17.6%)
CIE-LAB	lab(37.78, 43.16, -73.09)
CIE-LCH	lch(37.78, 84.88, 300.56°)
OKLab	oklab(48.14% 0.0122 -0.2112)
OKLCH	oklch(48.14% 0.212 273.3)
XYZ	xyz(15.8070, 9.9646, 62.0506)
Luminance	0.0997 (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

#3F45D2 #D2CC3F

analogous

#3F8ED2 #3F45D2 #823FD2

triadic

#3F45D2 #D23F45 #45D23F

tetradic

#3F45D2 #D23F8E #D2CC3F #3FD282

square

#3F45D2 #D23F8E #D2CC3F #3FD282

split-complementary

#3F45D2 #D2823F #8ED23F

monochromatic

#1D207A #282EAC #3F45D2 #7175DE #A2A5E9

Accessibility & contrast

On white

7.02

#3F45D2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.99

#3F45D2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F45D2

7.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F45D2	#FFFFFF	#000000	##FFFFFF
##3F45D2	1.00	7.02	2.99	7.02
#FFFFFF	7.02	1.00	21.00	1.00
#000000	2.99	21.00	1.00	21.00
##FFFFFF	7.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060D6

Deuteranopia (green-blind)

#0052CF

Tritanopia (blue-blind)

#006B86

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3f45d2;
/* rgb */ color: rgb(63, 69, 210);
/* oklch */ color: oklch(48.1% 0.212 273.3);

Tailwind

colors: {
  custom: {
    50: '#8879e1',
    500: '#3f45d2',
    950: '#000000',
  },
}

SCSS

$custom: #3f45d2;
$custom-light: #8879e1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f45d2",
  "rgb": {
    "r": 63,
    "g": 69,
    "b": 210
  },
  "hsl": {
    "h": 237.551,
    "s": 62.025,
    "l": 53.529
  },
  "oklch": {
    "l": 0.4814,
    "c": 0.21159,
    "h": 273.3
  },
  "luminance": 0.09966
}

Semantic roles & 50–950 ramp

primary

#3F45D2

secondary

#D6D397

accent

#DE43E5

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0915

muted

#7E7B83

Preview Lab

Preview with #3F45D2

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

Preview Lab → · Contrast checker → · Palette generator →