#3F41CC#3F41CC

#3F41CC is a mid, highly saturated blue. Relative luminance 0.092; OKLCH L 46.9% C 0.208 H 274.2°. Best body text is #FFFFFF at 7.40:1 contrast (WCAG AA passes).

Color values

HEX	#3F41CC
RGB	rgb(63, 65, 204)
HSL	hsl(239, 58%, 52%)
HSV	hsv(239, 69%, 80%)
CMYK	cmyk(69.1%, 68.1%, 0%, 20%)
CIE-LAB	lab(36.36, 43.53, -71.95)
CIE-LCH	lch(36.36, 84.10, 301.17°)
OKLab	oklab(46.95% 0.0154 -0.2079)
OKLCH	oklch(46.95% 0.208 274.2)
XYZ	xyz(14.8357, 9.1956, 58.1081)
Luminance	0.0920 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue Blue

#2242C7

ΔE00 2.96

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F41CC #CCCA3F

analogous

#3F88CC #3F41CC #843FCC

triadic

#3F41CC #CC3F41 #41CC3F

tetradic

#3F41CC #CC3F88 #CCCA3F #3FCC84

square

#3F41CC #CC3F88 #CCCA3F #3FCC84

split-complementary

#3F41CC #CC843F #88CC3F

monochromatic

#1E2072 #2B2DA3 #3F41CC #6F71D9 #A0A1E6

Accessibility & contrast

On white

7.40

#3F41CC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.84

#3F41CC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F41CC

7.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F41CC	#FFFFFF	#000000	##FFFFFF
##3F41CC	1.00	7.40	2.84	7.40
#FFFFFF	7.40	1.00	21.00	1.00
#000000	2.84	21.00	1.00	21.00
##FFFFFF	7.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CD0

Deuteranopia (green-blind)

#004FC9

Tritanopia (blue-blind)

#006781

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3f41cc;
/* rgb */ color: rgb(63, 65, 204);
/* oklch */ color: oklch(46.9% 0.208 274.2);

Tailwind

colors: {
  custom: {
    50: '#8776dd',
    500: '#3f41cc',
    950: '#000000',
  },
}

SCSS

$custom: #3f41cc;
$custom-light: #8776dd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f41cc",
  "rgb": {
    "r": 63,
    "g": 65,
    "b": 204
  },
  "hsl": {
    "h": 239.149,
    "s": 58.025,
    "l": 52.353
  },
  "oklch": {
    "l": 0.46947,
    "c": 0.20849,
    "h": 274.2
  },
  "luminance": 0.09197
}

Semantic roles & 50–950 ramp

primary

#3F41CC

secondary

#D2D195

accent

#DF47E1

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #3F41CC

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

Preview Lab → · Contrast checker → · Palette generator →