#3F41CD#3F41CD

#3F41CD is a mid, highly saturated blue. Relative luminance 0.092; OKLCH L 47.0% C 0.210 H 274.2°. Best body text is #FFFFFF at 7.37:1 contrast (WCAG AA passes).

Color values

HEX	#3F41CD
RGB	rgb(63, 65, 205)
HSL	hsl(239, 59%, 53%)
HSV	hsv(239, 69%, 80%)
CMYK	cmyk(69.3%, 68.3%, 0%, 19.6%)
CIE-LAB	lab(36.45, 43.86, -72.38)
CIE-LCH	lch(36.45, 84.64, 301.21°)
OKLab	oklab(47.04% 0.0153 -0.2092)
OKLCH	oklch(47.04% 0.21 274.2)
XYZ	xyz(14.9560, 9.2437, 58.7418)
Luminance	0.0925 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue Blue

#2242C7

ΔE00 3.02

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F41CD #CDCB3F

analogous

#3F88CD #3F41CD #843FCD

triadic

#3F41CD #CD3F41 #41CD3F

tetradic

#3F41CD #CD3F88 #CDCB3F #3FCD84

square

#3F41CD #CD3F88 #CDCB3F #3FCD84

split-complementary

#3F41CD #CD843F #88CD3F

monochromatic

#1E1F74 #2B2CA4 #3F41CD #7071DA #A0A1E6

Accessibility & contrast

On white

7.37

#3F41CD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.85

#3F41CD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F41CD

7.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F41CD	#FFFFFF	#000000	##FFFFFF
##3F41CD	1.00	7.37	2.85	7.37
#FFFFFF	7.37	1.00	21.00	1.00
#000000	2.85	21.00	1.00	21.00
##FFFFFF	7.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CD1

Deuteranopia (green-blind)

#004FCA

Tritanopia (blue-blind)

#006782

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3f41cd;
/* rgb */ color: rgb(63, 65, 205);
/* oklch */ color: oklch(47.0% 0.210 274.2);

Tailwind

colors: {
  custom: {
    50: '#8776dd',
    500: '#3f41cd',
    950: '#000000',
  },
}

SCSS

$custom: #3f41cd;
$custom-light: #8776dd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f41cd",
  "rgb": {
    "r": 63,
    "g": 65,
    "b": 205
  },
  "hsl": {
    "h": 239.155,
    "s": 58.678,
    "l": 52.549
  },
  "oklch": {
    "l": 0.4704,
    "c": 0.20974,
    "h": 274.2
  },
  "luminance": 0.09245
}

Semantic roles & 50–950 ramp

primary

#3F41CD

secondary

#D3D295

accent

#E046E2

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #3F41CD

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

Preview Lab → · Contrast checker → · Palette generator →