#3F43CA#3F43CA

#3F43CA is a mid, highly saturated blue. Relative luminance 0.093; OKLCH L 47.1% C 0.204 H 274.0°. Best body text is #FFFFFF at 7.32:1 contrast (WCAG AA passes).

Color values

HEX	#3F43CA
RGB	rgb(63, 67, 202)
HSL	hsl(238, 57%, 52%)
HSV	hsv(238, 69%, 79%)
CMYK	cmyk(68.8%, 66.8%, 0%, 20.8%)
CIE-LAB	lab(36.62, 41.67, -70.36)
CIE-LCH	lch(36.62, 81.77, 300.63°)
OKLab	oklab(47.08% 0.0144 -0.2033)
OKLCH	oklch(47.08% 0.204 274)
XYZ	xyz(14.7142, 9.3340, 56.8919)
Luminance	0.0934 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue Blue

#2242C7

ΔE00 2.75

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F43CA #CAC63F

analogous

#3F89CA #3F43CA #803FCA

triadic

#3F43CA #CA3F43 #43CA3F

tetradic

#3F43CA #CA3F89 #CAC63F #3FCA80

square

#3F43CA #CA3F89 #CAC63F #3FCA80

split-complementary

#3F43CA #CA803F #89CA3F

monochromatic

#1F2170 #2C2FA0 #3F43CA #6F72D7 #9FA1E4

Accessibility & contrast

On white

7.32

#3F43CA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.87

#3F43CA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F43CA

7.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F43CA	#FFFFFF	#000000	##FFFFFF
##3F43CA	1.00	7.32	2.87	7.32
#FFFFFF	7.32	1.00	21.00	1.00
#000000	2.87	21.00	1.00	21.00
##FFFFFF	7.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DCE

Deuteranopia (green-blind)

#0050C7

Tritanopia (blue-blind)

#006781

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3f43ca;
/* rgb */ color: rgb(63, 67, 202);
/* oklch */ color: oklch(47.1% 0.204 274.0);

Tailwind

colors: {
  custom: {
    50: '#8678db',
    500: '#3f43ca',
    950: '#000000',
  },
}

SCSS

$custom: #3f43ca;
$custom-light: #8678db;
$custom-dark: #000000;

JSON

{
  "hex": "#3f43ca",
  "rgb": {
    "r": 63,
    "g": 67,
    "b": 202
  },
  "hsl": {
    "h": 238.273,
    "s": 56.735,
    "l": 51.961
  },
  "oklch": {
    "l": 0.47081,
    "c": 0.20377,
    "h": 274
  },
  "luminance": 0.09335
}

Semantic roles & 50–950 ramp

primary

#3F43CA

secondary

#D1CF94

accent

#DC48E0

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0915

muted

#7E7B83

Preview Lab

Preview with #3F43CA

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

Preview Lab → · Contrast checker → · Palette generator →