#3F43C2#3F43C2

#3F43C2 is a mid, vivid blue. Relative luminance 0.090; OKLCH L 46.4% C 0.194 H 274.5°. Best body text is #FFFFFF at 7.52:1 contrast (WCAG AA passes).

Color values

HEX	#3F43C2
RGB	rgb(63, 67, 194)
HSL	hsl(238, 52%, 50%)
HSV	hsv(238, 68%, 76%)
CMYK	cmyk(67.5%, 65.5%, 0%, 23.9%)
CIE-LAB	lab(35.92, 38.96, -66.85)
CIE-LCH	lch(35.92, 77.38, 300.23°)
OKLab	oklab(46.36% 0.0151 -0.193)
OKLCH	oklch(46.36% 0.194 274.5)
XYZ	xyz(13.7914, 8.9649, 52.0321)
Luminance	0.0897 (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

#3F43C2 #C2BE3F

analogous

#3F84C2 #3F43C2 #7C3FC2

triadic

#3F43C2 #C23F43 #43C23F

tetradic

#3F43C2 #C23F84 #C2BE3F #3FC27C

square

#3F43C2 #C23F84 #C2BE3F #3FC27C

split-complementary

#3F43C2 #C27C3F #84C23F

monochromatic

#202366 #2F3295 #3F43C2 #6D70D1 #9C9EE0

Accessibility & contrast

On white

7.52

#3F43C2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.79

#3F43C2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F43C2

7.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F43C2	#FFFFFF	#000000	##FFFFFF
##3F43C2	1.00	7.52	2.79	7.52
#FFFFFF	7.52	1.00	21.00	1.00
#000000	2.79	21.00	1.00	21.00
##FFFFFF	7.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005AC6

Deuteranopia (green-blind)

#004FC0

Tritanopia (blue-blind)

#00647C

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #3f43c2;
/* rgb */ color: rgb(63, 67, 194);
/* oklch */ color: oklch(46.4% 0.194 274.5);

Tailwind

colors: {
  custom: {
    50: '#8577d5',
    500: '#3f43c2',
    950: '#000000',
  },
}

SCSS

$custom: #3f43c2;
$custom-light: #8577d5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f43c2",
  "rgb": {
    "r": 63,
    "g": 67,
    "b": 194
  },
  "hsl": {
    "h": 238.168,
    "s": 51.779,
    "l": 50.392
  },
  "oklch": {
    "l": 0.46355,
    "c": 0.19357,
    "h": 274.5
  },
  "luminance": 0.08966
}

Semantic roles & 50–950 ramp

primary

#3F43C2

secondary

#CCCA91

accent

#D74DDB

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3F43C2

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

Preview Lab → · Contrast checker → · Palette generator →