#3F48C8#3F48C8

#3F48C8 is a mid, vivid blue. Relative luminance 0.099; OKLCH L 47.7% C 0.195 H 273.2°. Best body text is #FFFFFF at 7.06:1 contrast (WCAG AA passes).

Color values

HEX	#3F48C8
RGB	rgb(63, 72, 200)
HSL	hsl(236, 55%, 52%)
HSV	hsv(236, 69%, 78%)
CMYK	cmyk(68.5%, 64%, 0%, 21.6%)
CIE-LAB	lab(37.59, 37.94, -67.61)
CIE-LCH	lch(37.59, 77.53, 299.30°)
OKLab	oklab(47.74% 0.0111 -0.1952)
OKLCH	oklch(47.74% 0.195 273.2)
XYZ	xyz(14.7891, 9.8602, 55.7562)
Luminance	0.0986 (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

#3F48C8 #C8BF3F

analogous

#3F8DC8 #3F48C8 #7B3FC8

triadic

#3F48C8 #C83F48 #48C83F

tetradic

#3F48C8 #C83F8D #C8BF3F #3FC87B

square

#3F48C8 #C83F8D #C8BF3F #3FC87B

split-complementary

#3F48C8 #C87B3F #8DC83F

monochromatic

#1F246D #2D349D #3F48C8 #6F75D6 #9EA3E3

Accessibility & contrast

On white

7.06

#3F48C8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.97

#3F48C8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F48C8

7.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F48C8	#FFFFFF	#000000	##FFFFFF
##3F48C8	1.00	7.06	2.97	7.06
#FFFFFF	7.06	1.00	21.00	1.00
#000000	2.97	21.00	1.00	21.00
##FFFFFF	7.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FCC

Deuteranopia (green-blind)

#0052C6

Tritanopia (blue-blind)

#006981

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3f48c8;
/* rgb */ color: rgb(63, 72, 200);
/* oklch */ color: oklch(47.7% 0.195 273.2);

Tailwind

colors: {
  custom: {
    50: '#857bda',
    500: '#3f48c8',
    950: '#000000',
  },
}

SCSS

$custom: #3f48c8;
$custom-light: #857bda;
$custom-dark: #000000;

JSON

{
  "hex": "#3f48c8",
  "rgb": {
    "r": 63,
    "g": 72,
    "b": 200
  },
  "hsl": {
    "h": 236.058,
    "s": 55.466,
    "l": 51.569
  },
  "oklch": {
    "l": 0.47735,
    "c": 0.19549,
    "h": 273.2
  },
  "luminance": 0.09862
}

Semantic roles & 50–950 ramp

primary

#3F48C8

secondary

#D0CC93

accent

#D549DF

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0C0915

muted

#7D7B83

Preview Lab

Preview with #3F48C8

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

Preview Lab → · Contrast checker → · Palette generator →