#3F41C8#3F41C8

#3F41C8 is a mid, highly saturated blue. Relative luminance 0.090; OKLCH L 46.6% C 0.203 H 274.5°. Best body text is #FFFFFF at 7.50:1 contrast (WCAG AA passes).

Color values

HEX	#3F41C8
RGB	rgb(63, 65, 200)
HSL	hsl(239, 55%, 52%)
HSV	hsv(239, 69%, 78%)
CMYK	cmyk(68.5%, 67.5%, 0%, 21.6%)
CIE-LAB	lab(36.00, 42.19, -70.22)
CIE-LCH	lch(36.00, 81.92, 301.00°)
OKLab	oklab(46.58% 0.0159 -0.2029)
OKLCH	oklch(46.58% 0.203 274.5)
XYZ	xyz(14.3621, 9.0062, 55.6139)
Luminance	0.0901 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue Blue

#2242C7

ΔE00 2.79

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F41C8 #C8C63F

analogous

#3F86C8 #3F41C8 #823FC8

triadic

#3F41C8 #C83F41 #41C83F

tetradic

#3F41C8 #C83F86 #C8C63F #3FC882

square

#3F41C8 #C83F86 #C8C63F #3FC882

split-complementary

#3F41C8 #C8823F #86C83F

monochromatic

#1F206D #2D2F9D #3F41C8 #6F70D6 #9E9FE3

Accessibility & contrast

On white

7.50

#3F41C8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.80

#3F41C8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F41C8

7.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F41C8	#FFFFFF	#000000	##FFFFFF
##3F41C8	1.00	7.50	2.80	7.50
#FFFFFF	7.50	1.00	21.00	1.00
#000000	2.80	21.00	1.00	21.00
##FFFFFF	7.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BCC

Deuteranopia (green-blind)

#004EC5

Tritanopia (blue-blind)

#00657F

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3f41c8;
/* rgb */ color: rgb(63, 65, 200);
/* oklch */ color: oklch(46.6% 0.203 274.5);

Tailwind

colors: {
  custom: {
    50: '#8676da',
    500: '#3f41c8',
    950: '#000000',
  },
}

SCSS

$custom: #3f41c8;
$custom-light: #8676da;
$custom-dark: #000000;

JSON

{
  "hex": "#3f41c8",
  "rgb": {
    "r": 63,
    "g": 65,
    "b": 200
  },
  "hsl": {
    "h": 239.124,
    "s": 55.466,
    "l": 51.569
  },
  "oklch": {
    "l": 0.46575,
    "c": 0.20348,
    "h": 274.5
  },
  "luminance": 0.09007
}

Semantic roles & 50–950 ramp

primary

#3F41C8

secondary

#D0CF93

accent

#DD49DF

background

#F8F7FD

surface

#F0EDFB

border

#CBC8D4

text

#0D0815

muted

#7D7B83

Preview Lab

Preview with #3F41C8

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

Preview Lab → · Contrast checker → · Palette generator →