#3F41D0#3F41D0

#3F41D0 is a mid, highly saturated blue. Relative luminance 0.094; OKLCH L 47.3% C 0.213 H 274.0°. Best body text is #FFFFFF at 7.30:1 contrast (WCAG AA passes).

Color values

HEX	#3F41D0
RGB	rgb(63, 65, 208)
HSL	hsl(239, 61%, 53%)
HSV	hsv(239, 70%, 82%)
CMYK	cmyk(69.7%, 68.8%, 0%, 18.4%)
CIE-LAB	lab(36.72, 44.86, -73.67)
CIE-LCH	lch(36.72, 86.25, 301.34°)
OKLab	oklab(47.32% 0.0149 -0.2129)
OKLCH	oklch(47.32% 0.213 274)
XYZ	xyz(15.3216, 9.3900, 60.6673)
Luminance	0.0939 (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

#3F41D0 #D0CE3F

analogous

#3F8AD0 #3F41D0 #853FD0

triadic

#3F41D0 #D03F41 #41D03F

tetradic

#3F41D0 #D03F8A #D0CE3F #3FD085

square

#3F41D0 #D03F8A #D0CE3F #3FD085

split-complementary

#3F41D0 #D0853F #8AD03F

monochromatic

#1D1E77 #292BA9 #3F41D0 #7072DC #A1A2E8

Accessibility & contrast

On white

7.30

#3F41D0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.88

#3F41D0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F41D0

7.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F41D0	#FFFFFF	#000000	##FFFFFF
##3F41D0	1.00	7.30	2.88	7.30
#FFFFFF	7.30	1.00	21.00	1.00
#000000	2.88	21.00	1.00	21.00
##FFFFFF	7.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DD4

Deuteranopia (green-blind)

#0050CD

Tritanopia (blue-blind)

#006883

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3f41d0;
/* rgb */ color: rgb(63, 65, 208);
/* oklch */ color: oklch(47.3% 0.213 274.0);

Tailwind

colors: {
  custom: {
    50: '#8876e0',
    500: '#3f41d0',
    950: '#000000',
  },
}

SCSS

$custom: #3f41d0;
$custom-light: #8876e0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f41d0",
  "rgb": {
    "r": 63,
    "g": 65,
    "b": 208
  },
  "hsl": {
    "h": 239.172,
    "s": 60.669,
    "l": 53.137
  },
  "oklch": {
    "l": 0.47322,
    "c": 0.21345,
    "h": 274
  },
  "luminance": 0.09391
}

Semantic roles & 50–950 ramp

primary

#3F41D0

secondary

#D5D496

accent

#E244E4

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #3F41D0

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

Preview Lab → · Contrast checker → · Palette generator →