#3F41D6#3F41D6

#3F41D6 is a mid, highly saturated blue. Relative luminance 0.097; OKLCH L 47.9% C 0.221 H 273.7°. Best body text is #FFFFFF at 7.15:1 contrast (WCAG AA passes).

Color values

HEX	#3F41D6
RGB	rgb(63, 65, 214)
HSL	hsl(239, 65%, 54%)
HSV	hsv(239, 71%, 84%)
CMYK	cmyk(70.6%, 69.6%, 0%, 16.1%)
CIE-LAB	lab(37.28, 46.84, -76.22)
CIE-LCH	lch(37.28, 89.46, 301.57°)
OKLab	oklab(47.89% 0.0141 -0.2204)
OKLCH	oklch(47.89% 0.221 273.7)
XYZ	xyz(16.0737, 9.6908, 64.6287)
Luminance	0.0969 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue (survey)

#0343DF

ΔE00 3.22

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F41D6 #D6D43F

analogous

#3F8DD6 #3F41D6 #883FD6

triadic

#3F41D6 #D63F41 #41D63F

tetradic

#3F41D6 #D63F8D #D6D43F #3FD688

square

#3F41D6 #D63F8D #D6D43F #3FD688

split-complementary

#3F41D6 #D6883F #8DD63F

monochromatic

#1B1D7F #2628B2 #3F41D6 #7173E1 #A4A5EC

Accessibility & contrast

On white

7.15

#3F41D6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.94

#3F41D6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F41D6

7.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F41D6	#FFFFFF	#000000	##FFFFFF
##3F41D6	1.00	7.15	2.94	7.15
#FFFFFF	7.15	1.00	21.00	1.00
#000000	2.94	21.00	1.00	21.00
##FFFFFF	7.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FDA

Deuteranopia (green-blind)

#0051D3

Tritanopia (blue-blind)

#006A87

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3f41d6;
/* rgb */ color: rgb(63, 65, 214);
/* oklch */ color: oklch(47.9% 0.221 273.7);

Tailwind

colors: {
  custom: {
    50: '#8977e4',
    500: '#3f41d6',
    950: '#000000',
  },
}

SCSS

$custom: #3f41d6;
$custom-light: #8977e4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f41d6",
  "rgb": {
    "r": 63,
    "g": 65,
    "b": 214
  },
  "hsl": {
    "h": 239.205,
    "s": 64.807,
    "l": 54.314
  },
  "oklch": {
    "l": 0.47892,
    "c": 0.22082,
    "h": 273.7
  },
  "luminance": 0.09692
}

Semantic roles & 50–950 ramp

primary

#3F41D6

secondary

#D8D898

accent

#E640E8

background

#F9F7FE

surface

#F2EDFC

border

#CCC8D5

text

#0D0916

muted

#7E7B84

Preview Lab

Preview with #3F41D6

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

Preview Lab → · Contrast checker → · Palette generator →